mohanmca · August 30, 2021 14:21 · Dec 29, 2019 · Dec 29, 2019 · Dec 29, 2019 · Dec 29, 2019
diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -103,7 +103,7 @@
 - [x] [Same Tree](https://leetcode.com/problems/same-tree/)
 - [x] [Invert/Flip Binary Tree](https://leetcode.com/problems/invert-binary-tree/)
 - [ ] [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binary-tree-maximum-path-sum/)
-- [ ] [Binary Tree Level Order Traversal](https://leetcode.com/problems/binary-tree-level-order-traversal/)
+- [x] [Binary Tree Level Order Traversal](https://leetcode.com/problems/binary-tree-level-order-traversal/)
 - [ ] [Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serialize-and-deserialize-binary-tree/)
 - [x] [Subtree of Another Tree](https://leetcode.com/problems/subtree-of-another-tree/)
 - [ ] [Construct Binary Tree from Preorder and Inorder Traversal](https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -105,7 +105,7 @@
 - [ ] [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binary-tree-maximum-path-sum/)
 - [ ] [Binary Tree Level Order Traversal](https://leetcode.com/problems/binary-tree-level-order-traversal/)
 - [ ] [Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serialize-and-deserialize-binary-tree/)
-- [ ] [Subtree of Another Tree](https://leetcode.com/problems/subtree-of-another-tree/)
+- [x] [Subtree of Another Tree](https://leetcode.com/problems/subtree-of-another-tree/)
 - [ ] [Construct Binary Tree from Preorder and Inorder Traversal](https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/)
 - [ ] [Validate Binary Search Tree](https://leetcode.com/problems/validate-binary-search-tree/)
 - [ ] [Kth Smallest Element in a BST](https://leetcode.com/problems/kth-smallest-element-in-a-bst/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -99,7 +99,7 @@
 ---
 
 ## Tree
-- [ ] [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximum-depth-of-binary-tree/)
+- [x] [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximum-depth-of-binary-tree/)
 - [x] [Same Tree](https://leetcode.com/problems/same-tree/)
 - [x] [Invert/Flip Binary Tree](https://leetcode.com/problems/invert-binary-tree/)
 - [ ] [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binary-tree-maximum-path-sum/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -101,7 +101,7 @@
 ## Tree
 - [ ] [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximum-depth-of-binary-tree/)
 - [x] [Same Tree](https://leetcode.com/problems/same-tree/)
-- [ ] [Invert/Flip Binary Tree](https://leetcode.com/problems/invert-binary-tree/)
+- [x] [Invert/Flip Binary Tree](https://leetcode.com/problems/invert-binary-tree/)
 - [ ] [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binary-tree-maximum-path-sum/)
 - [ ] [Binary Tree Level Order Traversal](https://leetcode.com/problems/binary-tree-level-order-traversal/)
 - [ ] [Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serialize-and-deserialize-binary-tree/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -100,7 +100,7 @@
 
 ## Tree
 - [ ] [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximum-depth-of-binary-tree/)
-- [ ] [Same Tree](https://leetcode.com/problems/same-tree/)
+- [x] [Same Tree](https://leetcode.com/problems/same-tree/)
 - [ ] [Invert/Flip Binary Tree](https://leetcode.com/problems/invert-binary-tree/)
 - [ ] [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binary-tree-maximum-path-sum/)
 - [ ] [Binary Tree Level Order Traversal](https://leetcode.com/problems/binary-tree-level-order-traversal/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -70,7 +70,7 @@
 - [x] [Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)
 - [x] [Merge K Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)
 - [x] [Remove Nth Node From End Of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/)
-- [ ] [Reorder List](https://leetcode.com/problems/reorder-list/)
+- [x] [Reorder List](https://leetcode.com/problems/reorder-list/)
 
 ---
 

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -69,7 +69,7 @@
 - [x] [Detect Cycle in a Linked List](https://leetcode.com/problems/linked-list-cycle/)
 - [x] [Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)
 - [x] [Merge K Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)
-- [ ] [Remove Nth Node From End Of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/)
+- [x] [Remove Nth Node From End Of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/)
 - [ ] [Reorder List](https://leetcode.com/problems/reorder-list/)
 
 ---

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -68,7 +68,7 @@
 - [x] [Reverse a Linked List](https://leetcode.com/problems/reverse-linked-list/)
 - [x] [Detect Cycle in a Linked List](https://leetcode.com/problems/linked-list-cycle/)
 - [x] [Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)
-- [ ] [Merge K Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)
+- [x] [Merge K Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)
 - [ ] [Remove Nth Node From End Of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/)
 - [ ] [Reorder List](https://leetcode.com/problems/reorder-list/)
 

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -67,7 +67,7 @@
 
 - [x] [Reverse a Linked List](https://leetcode.com/problems/reverse-linked-list/)
 - [x] [Detect Cycle in a Linked List](https://leetcode.com/problems/linked-list-cycle/)
-- [ ] [Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)
+- [x] [Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)
 - [ ] [Merge K Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)
 - [ ] [Remove Nth Node From End Of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/)
 - [ ] [Reorder List](https://leetcode.com/problems/reorder-list/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -66,7 +66,7 @@
 ## Linked List
 
 - [x] [Reverse a Linked List](https://leetcode.com/problems/reverse-linked-list/)
-- [ ] [Detect Cycle in a Linked List](https://leetcode.com/problems/linked-list-cycle/)
+- [x] [Detect Cycle in a Linked List](https://leetcode.com/problems/linked-list-cycle/)
 - [ ] [Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)
 - [ ] [Merge K Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)
 - [ ] [Remove Nth Node From End Of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -65,7 +65,7 @@
 
 ## Linked List
 
-- [ ] [Reverse a Linked List](https://leetcode.com/problems/reverse-linked-list/)
+- [x] [Reverse a Linked List](https://leetcode.com/problems/reverse-linked-list/)
 - [ ] [Detect Cycle in a Linked List](https://leetcode.com/problems/linked-list-cycle/)
 - [ ] [Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)
 - [ ] [Merge K Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -10,7 +10,7 @@
 - [x] [Find Minimum in Rotated Sorted Array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)
 - [x] [Search in Rotated Sorted Array](https://leetcode.com/problems/search-in-rotated-sorted-array/)
 - [x] [3Sum](https://leetcode.com/problems/3sum/)
-- [ ] [Container With Most Water](https://leetcode.com/problems/container-with-most-water/)
+- [x] [Container With Most Water](https://leetcode.com/problems/container-with-most-water/)
 
 ---
 

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -9,7 +9,7 @@
 - [x] [Maximum Product Subarray](https://leetcode.com/problems/maximum-product-subarray/)
 - [x] [Find Minimum in Rotated Sorted Array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)
 - [x] [Search in Rotated Sorted Array](https://leetcode.com/problems/search-in-rotated-sorted-array/)
-- [ ] [3Sum](https://leetcode.com/problems/3sum/)
+- [x] [3Sum](https://leetcode.com/problems/3sum/)
 - [ ] [Container With Most Water](https://leetcode.com/problems/container-with-most-water/)
 
 ---

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -8,7 +8,7 @@
 - [x] [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)
 - [x] [Maximum Product Subarray](https://leetcode.com/problems/maximum-product-subarray/)
 - [x] [Find Minimum in Rotated Sorted Array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)
-- [ ] [Search in Rotated Sorted Array](https://leetcode.com/problems/search-in-rotated-sorted-array/)
+- [x] [Search in Rotated Sorted Array](https://leetcode.com/problems/search-in-rotated-sorted-array/)
 - [ ] [3Sum](https://leetcode.com/problems/3sum/)
 - [ ] [Container With Most Water](https://leetcode.com/problems/container-with-most-water/)
 

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -6,7 +6,7 @@
 - [x] [Contains Duplicate](https://leetcode.com/problems/contains-duplicate/)
 - [x] [Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/)
 - [x] [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)
-- [ ] [Maximum Product Subarray](https://leetcode.com/problems/maximum-product-subarray/)
+- [x] [Maximum Product Subarray](https://leetcode.com/problems/maximum-product-subarray/)
 - [x] [Find Minimum in Rotated Sorted Array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)
 - [ ] [Search in Rotated Sorted Array](https://leetcode.com/problems/search-in-rotated-sorted-array/)
 - [ ] [3Sum](https://leetcode.com/problems/3sum/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -7,7 +7,7 @@
 - [x] [Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/)
 - [x] [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)
 - [ ] [Maximum Product Subarray](https://leetcode.com/problems/maximum-product-subarray/)
-- [ ] [Find Minimum in Rotated Sorted Array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)
+- [x] [Find Minimum in Rotated Sorted Array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)
 - [ ] [Search in Rotated Sorted Array](https://leetcode.com/problems/search-in-rotated-sorted-array/)
 - [ ] [3Sum](https://leetcode.com/problems/3sum/)
 - [ ] [Container With Most Water](https://leetcode.com/problems/container-with-most-water/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -5,7 +5,7 @@
 - [x] [Best Time to Buy and Sell Stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/)
 - [x] [Contains Duplicate](https://leetcode.com/problems/contains-duplicate/)
 - [x] [Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/)
-- [ ] [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)
+- [x] [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)
 - [ ] [Maximum Product Subarray](https://leetcode.com/problems/maximum-product-subarray/)
 - [ ] [Find Minimum in Rotated Sorted Array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)
 - [ ] [Search in Rotated Sorted Array](https://leetcode.com/problems/search-in-rotated-sorted-array/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -4,7 +4,7 @@
 - [x] [Two Sum](https://leetcode.com/problems/two-sum/)
 - [x] [Best Time to Buy and Sell Stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/)
 - [x] [Contains Duplicate](https://leetcode.com/problems/contains-duplicate/)
-- [ ] [Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/)
+- [x] [Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/)
 - [ ] [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)
 - [ ] [Maximum Product Subarray](https://leetcode.com/problems/maximum-product-subarray/)
 - [ ] [Find Minimum in Rotated Sorted Array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -3,7 +3,7 @@
 
 - [x] [Two Sum](https://leetcode.com/problems/two-sum/)
 - [x] [Best Time to Buy and Sell Stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/)
-- [ ] [Contains Duplicate](https://leetcode.com/problems/contains-duplicate/)
+- [x] [Contains Duplicate](https://leetcode.com/problems/contains-duplicate/)
 - [ ] [Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/)
 - [ ] [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)
 - [ ] [Maximum Product Subarray](https://leetcode.com/problems/maximum-product-subarray/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -2,7 +2,7 @@
 ## Array
 
 - [x] [Two Sum](https://leetcode.com/problems/two-sum/)
-- [ ] [Best Time to Buy and Sell Stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/)
+- [x] [Best Time to Buy and Sell Stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/)
 - [ ] [Contains Duplicate](https://leetcode.com/problems/contains-duplicate/)
 - [ ] [Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/)
 - [ ] [Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -1,7 +1,7 @@
 
 ## Array
 
-- [ ] [Two Sum](https://leetcode.com/problems/two-sum/)
+- [x] [Two Sum](https://leetcode.com/problems/two-sum/)
 - [ ] [Best Time to Buy and Sell Stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/)
 - [ ] [Contains Duplicate](https://leetcode.com/problems/contains-duplicate/)
 - [ ] [Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -26,101 +26,101 @@
 
 ## Dynamic Programming
 
-- [] [Climbing Stairs](https://leetcode.com/problems/climbing-stairs/)
-- [] [Coin Change](https://leetcode.com/problems/coin-change/)
-- [] [Longest Increasing Subsequence](https://leetcode.com/problems/longest-increasing-subsequence/)
-- [] [Longest Common Subsequence](https://leetcode.com/problems/longest-common-subsequence/)
-- [] [Word Break Problem](https://leetcode.com/problems/word-break/)
-- [] [Combination Sum](https://leetcode.com/problems/combination-sum-iv/)
-- [] [House Robber](https://leetcode.com/problems/house-robber/)
-- [] [House Robber II](https://leetcode.com/problems/house-robber-ii/)
-- [] [Decode Ways](https://leetcode.com/problems/decode-ways/)
-- [] [Unique Paths](https://leetcode.com/problems/unique-paths/)
-- [] [Jump Game](https://leetcode.com/problems/jump-game/)
+- [ ] [Climbing Stairs](https://leetcode.com/problems/climbing-stairs/)
+- [ ] [Coin Change](https://leetcode.com/problems/coin-change/)
+- [ ] [Longest Increasing Subsequence](https://leetcode.com/problems/longest-increasing-subsequence/)
+- [ ] [Longest Common Subsequence](https://leetcode.com/problems/longest-common-subsequence/)
+- [ ] [Word Break Problem](https://leetcode.com/problems/word-break/)
+- [ ] [Combination Sum](https://leetcode.com/problems/combination-sum-iv/)
+- [ ] [House Robber](https://leetcode.com/problems/house-robber/)
+- [ ] [House Robber II](https://leetcode.com/problems/house-robber-ii/)
+- [ ] [Decode Ways](https://leetcode.com/problems/decode-ways/)
+- [ ] [Unique Paths](https://leetcode.com/problems/unique-paths/)
+- [ ] [Jump Game](https://leetcode.com/problems/jump-game/)
 
 ---
 
 ## Graph
 
-- [] [Clone Graph](https://leetcode.com/problems/clone-graph/)
-- [] [Course Schedule](https://leetcode.com/problems/course-schedule/)
-- [] [Pacific Atlantic Water Flow](https://leetcode.com/problems/pacific-atlantic-water-flow/)
-- [] [Number of Islands](https://leetcode.com/problems/number-of-islands/)
-- [] [Longest Consecutive Sequence](https://leetcode.com/problems/longest-consecutive-sequence/)
-- [] [Alien Dictionary (Leetcode Premium)](https://leetcode.com/problems/alien-dictionary/)
-- [] [Graph Valid Tree (Leetcode Premium)](https://leetcode.com/problems/graph-valid-tree/)
-- [] [Number of Connected Components in an Undirected Graph (Leetcode Premium)](https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph/)
+- [ ] [Clone Graph](https://leetcode.com/problems/clone-graph/)
+- [ ] [Course Schedule](https://leetcode.com/problems/course-schedule/)
+- [ ] [Pacific Atlantic Water Flow](https://leetcode.com/problems/pacific-atlantic-water-flow/)
+- [ ] [Number of Islands](https://leetcode.com/problems/number-of-islands/)
+- [ ] [Longest Consecutive Sequence](https://leetcode.com/problems/longest-consecutive-sequence/)
+- [ ] [Alien Dictionary (Leetcode Premium)](https://leetcode.com/problems/alien-dictionary/)
+- [ ] [Graph Valid Tree (Leetcode Premium)](https://leetcode.com/problems/graph-valid-tree/)
+- [ ] [Number of Connected Components in an Undirected Graph (Leetcode Premium)](https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph/)
 
 ---
 
 ## Interval
 
-- [ ] [Insert Interval](https://leetcode.com/problems/insertinterval/)
-- [ ] [Merge Intervals](https://leetcode.com/problems/mergeintervals/)
-- [ ] [Non-overlapping Intervals](https://leetcode.com/problems/nonoverlappingintervals/)
-- [ ] [Meeting Rooms (Leetcode Premium)](https://leetcode.com/problems/meetingrooms/)
-- [ ] [Meeting Rooms II (Leetcode Premium)](https://leetcode.com/problems/meetingroomsii/)
+- [ ] [Insert Interval](https://leetcode.com/problems/insert-interval/)
+- [ ] [Merge Intervals](https://leetcode.com/problems/merge-intervals/)
+- [ ] [Non-overlapping Intervals](https://leetcode.com/problems/non-overlapping-intervals/)
+- [ ] [Meeting Rooms (Leetcode Premium)](https://leetcode.com/problems/meeting-rooms/)
+- [ ] [Meeting Rooms II (Leetcode Premium)](https://leetcode.com/problems/meeting-rooms-ii/)
 
 ---
 
 ## Linked List
 
-- [ ] [Reverse a Linked List](https://leetcode.com/problems/reverselinkedlist/)
-- [ ] [Detect Cycle in a Linked List](https://leetcode.com/problems/linkedlistcycle/)
-- [ ] [Merge Two Sorted Lists](https://leetcode.com/problems/mergetwosortedlists/)
-- [ ] [Merge K Sorted Lists](https://leetcode.com/problems/mergeksortedlists/)
-- [ ] [Remove Nth Node From End Of List](https://leetcode.com/problems/removenthnodefromendoflist/)
-- [ ] [Reorder List](https://leetcode.com/problems/reorderlist/)
+- [ ] [Reverse a Linked List](https://leetcode.com/problems/reverse-linked-list/)
+- [ ] [Detect Cycle in a Linked List](https://leetcode.com/problems/linked-list-cycle/)
+- [ ] [Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)
+- [ ] [Merge K Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)
+- [ ] [Remove Nth Node From End Of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/)
+- [ ] [Reorder List](https://leetcode.com/problems/reorder-list/)
 
 ---
 
 ## Matrix
 
-- [ ] [Set Matrix Zeroes](https://leetcode.com/problems/setmatrixzeroes/)
-- [ ] [Spiral Matrix](https://leetcode.com/problems/spiralmatrix/)
-- [ ] [Rotate Image](https://leetcode.com/problems/rotateimage/)
-- [ ] [Word Search](https://leetcode.com/problems/wordsearch/)
+- [ ] [Set Matrix Zeroes](https://leetcode.com/problems/set-matrix-zeroes/)
+- [ ] [Spiral Matrix](https://leetcode.com/problems/spiral-matrix/)
+- [ ] [Rotate Image](https://leetcode.com/problems/rotate-image/)
+- [ ] [Word Search](https://leetcode.com/problems/word-search/)
 
 ---
 
 ## String
 
-- [ ] [Longest Substring Without Repeating Characters](https://leetcode.com/problems/longestsubstringwithoutrepeatingcharacters/)
-- [ ] [Longest Repeating Character Replacement](https://leetcode.com/problems/longestrepeatingcharacterreplacement/)
-- [ ] [Minimum Window Substring](https://leetcode.com/problems/minimumwindowsubstring/)
-- [ ] [Valid Anagram](https://leetcode.com/problems/validanagram/)
-- [ ] [Group Anagrams](https://leetcode.com/problems/groupanagrams/)
-- [ ] [Valid Parentheses](https://leetcode.com/problems/validparentheses/)
-- [ ] [Valid Palindrome](https://leetcode.com/problems/validpalindrome/)
-- [ ] [Longest Palindromic Substring](https://leetcode.com/problems/longestpalindromicsubstring/)
-- [ ] [Palindromic Substrings](https://leetcode.com/problems/palindromicsubstrings/)
-- [ ] [Encode and Decode Strings (Leetcode Premium)](https://leetcode.com/problems/encodeanddecodestrings/)
+- [ ] [Longest Substring Without Repeating Characters](https://leetcode.com/problems/longest-substring-without-repeating-characters/)
+- [ ] [Longest Repeating Character Replacement](https://leetcode.com/problems/longest-repeating-character-replacement/)
+- [ ] [Minimum Window Substring](https://leetcode.com/problems/minimum-window-substring/)
+- [ ] [Valid Anagram](https://leetcode.com/problems/valid-anagram/)
+- [ ] [Group Anagrams](https://leetcode.com/problems/group-anagrams/)
+- [ ] [Valid Parentheses](https://leetcode.com/problems/valid-parentheses/)
+- [ ] [Valid Palindrome](https://leetcode.com/problems/valid-palindrome/)
+- [ ] [Longest Palindromic Substring](https://leetcode.com/problems/longest-palindromic-substring/)
+- [ ] [Palindromic Substrings](https://leetcode.com/problems/palindromic-substrings/)
+- [ ] [Encode and Decode Strings (Leetcode Premium)](https://leetcode.com/problems/encode-and-decode-strings/)
 
 ---
 
 ## Tree
-- [] [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximum-depth-of-binary-tree/)
-- [] [Same Tree](https://leetcode.com/problems/same-tree/)
-- [] [Invert/Flip Binary Tree](https://leetcode.com/problems/invert-binary-tree/)
-- [] [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binary-tree-maximum-path-sum/)
-- [] [Binary Tree Level Order Traversal](https://leetcode.com/problems/binary-tree-level-order-traversal/)
-- [] [Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serialize-and-deserialize-binary-tree/)
-- [] [Subtree of Another Tree](https://leetcode.com/problems/subtree-of-another-tree/)
-- [] [Construct Binary Tree from Preorder and Inorder Traversal](https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/)
-- [] [Validate Binary Search Tree](https://leetcode.com/problems/validate-binary-search-tree/)
-- [] [Kth Smallest Element in a BST](https://leetcode.com/problems/kth-smallest-element-in-a-bst/)
-- [] [Lowest Common Ancestor of BST](https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/)
-- [] [Implement Trie (Prefix Tree)](https://leetcode.com/problems/implement-trie-prefix-tree/)
-- [] [Add and Search Word](https://leetcode.com/problems/add-and-search-word-data-structure-design/)
-- [] [Word Search II](https://leetcode.com/problems/word-search-ii/)
+- [ ] [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximum-depth-of-binary-tree/)
+- [ ] [Same Tree](https://leetcode.com/problems/same-tree/)
+- [ ] [Invert/Flip Binary Tree](https://leetcode.com/problems/invert-binary-tree/)
+- [ ] [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binary-tree-maximum-path-sum/)
+- [ ] [Binary Tree Level Order Traversal](https://leetcode.com/problems/binary-tree-level-order-traversal/)
+- [ ] [Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serialize-and-deserialize-binary-tree/)
+- [ ] [Subtree of Another Tree](https://leetcode.com/problems/subtree-of-another-tree/)
+- [ ] [Construct Binary Tree from Preorder and Inorder Traversal](https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/)
+- [ ] [Validate Binary Search Tree](https://leetcode.com/problems/validate-binary-search-tree/)
+- [ ] [Kth Smallest Element in a BST](https://leetcode.com/problems/kth-smallest-element-in-a-bst/)
+- [ ] [Lowest Common Ancestor of BST](https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/)
+- [ ] [Implement Trie (Prefix Tree)](https://leetcode.com/problems/implement-trie-prefix-tree/)
+- [ ] [Add and Search Word](https://leetcode.com/problems/add-and-search-word-data-structure-design/)
+- [ ] [Word Search II](https://leetcode.com/problems/word-search-ii/)
 
 ---
 
 ## Heap
 
-- [ ] [Merge K Sorted Lists](https://leetcode.com/problems/mergeksortedlists/)
-- [ ] [Top K Frequent Elements](https://leetcode.com/problems/topkfrequentelements/)
-- [ ] [Find Median from Data Stream](https://leetcode.com/problems/findmedianfromdatastream/)
+- [ ] [Merge K Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)
+- [ ] [Top K Frequent Elements](https://leetcode.com/problems/top-k-frequent-elements/)
+- [ ] [Find Median from Data Stream](https://leetcode.com/problems/find-median-from-data-stream/)
 
 ## Important Link:
 [14 Patterns to Ace Any Coding Interview Question](https://hackernoon.com/14-patterns-to-ace-any-coding-interview-question-c5bb3357f6ed)
diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -42,14 +42,15 @@
 
 ## Graph
 
-- [ ] [Clone Graph](https://leetcode.com/problems/clonegraph/)
-- [ ] [Course Schedule](https://leetcode.com/problems/courseschedule/)
-- [ ] [Pacific Atlantic Water Flow](https://leetcode.com/problems/pacificatlanticwaterflow/)
-- [ ] [Number of Islands](https://leetcode.com/problems/numberofislands/)
-- [ ] [Longest Consecutive Sequence](https://leetcode.com/problems/longestconsecutivesequence/)
-- [ ] [Alien Dictionary (Leetcode Premium)](https://leetcode.com/problems/aliendictionary/)
-- [ ] [Graph Valid Tree (Leetcode Premium)](https://leetcode.com/problems/graphvalidtree/)
-- [ ] [Number of Connected Components in an Undirected Graph (Leetcode Premium)](https://leetcode.com/problems/numberofconnectedcomponentsinanundirectedgraph/)
+- [] [Clone Graph](https://leetcode.com/problems/clone-graph/)
+- [] [Course Schedule](https://leetcode.com/problems/course-schedule/)
+- [] [Pacific Atlantic Water Flow](https://leetcode.com/problems/pacific-atlantic-water-flow/)
+- [] [Number of Islands](https://leetcode.com/problems/number-of-islands/)
+- [] [Longest Consecutive Sequence](https://leetcode.com/problems/longest-consecutive-sequence/)
+- [] [Alien Dictionary (Leetcode Premium)](https://leetcode.com/problems/alien-dictionary/)
+- [] [Graph Valid Tree (Leetcode Premium)](https://leetcode.com/problems/graph-valid-tree/)
+- [] [Number of Connected Components in an Undirected Graph (Leetcode Premium)](https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph/)
+
 ---
 
 ## Interval

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -26,17 +26,17 @@
 
 ## Dynamic Programming
 
-- [ ] [Climbing Stairs](https://leetcode.com/problems/climbingstairs/)
-- [ ] [Coin Change](https://leetcode.com/problems/coinchange/)
-- [ ] [Longest Increasing Subsequence](https://leetcode.com/problems/longestincreasingsubsequence/)
-- [ ] [Longest Common Subsequence](https://leetcode.com/problems/longest-common-subsequence/)
-- [ ] [Word Break Problem](https://leetcode.com/problems/wordbreak/)
-- [ ] [Combination Sum](https://leetcode.com/problems/combinationsumiv/)
-- [ ] [House Robber](https://leetcode.com/problems/houserobber/)
-- [ ] [House Robber II](https://leetcode.com/problems/houserobberii/)
-- [ ] [Decode Ways](https://leetcode.com/problems/decodeways/)
-- [ ] [Unique Paths](https://leetcode.com/problems/uniquepaths/)
-- [ ] [Jump Game](https://leetcode.com/problems/jumpgame/)
+- [] [Climbing Stairs](https://leetcode.com/problems/climbing-stairs/)
+- [] [Coin Change](https://leetcode.com/problems/coin-change/)
+- [] [Longest Increasing Subsequence](https://leetcode.com/problems/longest-increasing-subsequence/)
+- [] [Longest Common Subsequence](https://leetcode.com/problems/longest-common-subsequence/)
+- [] [Word Break Problem](https://leetcode.com/problems/word-break/)
+- [] [Combination Sum](https://leetcode.com/problems/combination-sum-iv/)
+- [] [House Robber](https://leetcode.com/problems/house-robber/)
+- [] [House Robber II](https://leetcode.com/problems/house-robber-ii/)
+- [] [Decode Ways](https://leetcode.com/problems/decode-ways/)
+- [] [Unique Paths](https://leetcode.com/problems/unique-paths/)
+- [] [Jump Game](https://leetcode.com/problems/jump-game/)
 
 ---
 

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -98,21 +98,20 @@
 ---
 
 ## Tree
-
-- [ ] [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximumdepthofbinarytree/)
-- [ ] [Same Tree](https://leetcode.com/problems/sametree/)
-- [ ] [Invert/Flip Binary Tree](https://leetcode.com/problems/invertbinarytree/)
-- [ ] [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binarytreemaximumpathsum/)
-- [ ] [Binary Tree Level Order Traversal](https://leetcode.com/problems/binarytreelevelordertraversal/)
-- [ ] [Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serializeanddeserializebinarytree/)
-- [ ] [Subtree of Another Tree](https://leetcode.com/problems/subtreeofanothertree/)
-- [ ] [Construct Binary Tree from Preorder and Inorder Traversal](https://leetcode.com/problems/constructbinarytreefrompreorderandinordertraversal/)
-- [ ] [Validate Binary Search Tree](https://leetcode.com/problems/validatebinarysearchtree/)
-- [ ] [Kth Smallest Element in a BST](https://leetcode.com/problems/kthsmallestelementinabst/)
-- [ ] [Lowest Common Ancestor of BST](https://leetcode.com/problems/lowestcommonancestorofabinarysearchtree/)
-- [ ] [Implement Trie (Prefix Tree)](https://leetcode.com/problems/implementtrieprefixtree/)
-- [ ] [Add and Search Word](https://leetcode.com/problems/addandsearchworddatastructuredesign/)
-- [ ] [Word Search II](https://leetcode.com/problems/wordsearchii/)
+- [] [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximum-depth-of-binary-tree/)
+- [] [Same Tree](https://leetcode.com/problems/same-tree/)
+- [] [Invert/Flip Binary Tree](https://leetcode.com/problems/invert-binary-tree/)
+- [] [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binary-tree-maximum-path-sum/)
+- [] [Binary Tree Level Order Traversal](https://leetcode.com/problems/binary-tree-level-order-traversal/)
+- [] [Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serialize-and-deserialize-binary-tree/)
+- [] [Subtree of Another Tree](https://leetcode.com/problems/subtree-of-another-tree/)
+- [] [Construct Binary Tree from Preorder and Inorder Traversal](https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/)
+- [] [Validate Binary Search Tree](https://leetcode.com/problems/validate-binary-search-tree/)
+- [] [Kth Smallest Element in a BST](https://leetcode.com/problems/kth-smallest-element-in-a-bst/)
+- [] [Lowest Common Ancestor of BST](https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/)
+- [] [Implement Trie (Prefix Tree)](https://leetcode.com/problems/implement-trie-prefix-tree/)
+- [] [Add and Search Word](https://leetcode.com/problems/add-and-search-word-data-structure-design/)
+- [] [Word Search II](https://leetcode.com/problems/word-search-ii/)
 
 ---
 

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -29,7 +29,7 @@
 - [ ] [Climbing Stairs](https://leetcode.com/problems/climbingstairs/)
 - [ ] [Coin Change](https://leetcode.com/problems/coinchange/)
 - [ ] [Longest Increasing Subsequence](https://leetcode.com/problems/longestincreasingsubsequence/)
-- [ ] [Longest Common Subsequence]()
+- [ ] [Longest Common Subsequence](https://leetcode.com/problems/longest-common-subsequence/)
 - [ ] [Word Break Problem](https://leetcode.com/problems/wordbreak/)
 - [ ] [Combination Sum](https://leetcode.com/problems/combinationsumiv/)
 - [ ] [House Robber](https://leetcode.com/problems/houserobber/)

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -122,3 +122,5 @@
 - [ ] [Top K Frequent Elements](https://leetcode.com/problems/topkfrequentelements/)
 - [ ] [Find Median from Data Stream](https://leetcode.com/problems/findmedianfromdatastream/)
 
+## Important Link:
+[14 Patterns to Ace Any Coding Interview Question](https://hackernoon.com/14-patterns-to-ace-any-coding-interview-question-c5bb3357f6ed)
diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -84,41 +84,41 @@
 
 ## String
 
-- [] [Longest Substring Without Repeating Characters](https://leetcode.com/problems/longestsubstringwithoutrepeatingcharacters/)
-- [] [Longest Repeating Character Replacement](https://leetcode.com/problems/longestrepeatingcharacterreplacement/)
-- [] [Minimum Window Substring](https://leetcode.com/problems/minimumwindowsubstring/)
-- [] [Valid Anagram](https://leetcode.com/problems/validanagram/)
-- [] [Group Anagrams](https://leetcode.com/problems/groupanagrams/)
-- [] [Valid Parentheses](https://leetcode.com/problems/validparentheses/)
-- [] [Valid Palindrome](https://leetcode.com/problems/validpalindrome/)
-- [] [Longest Palindromic Substring](https://leetcode.com/problems/longestpalindromicsubstring/)
-- [] [Palindromic Substrings](https://leetcode.com/problems/palindromicsubstrings/)
-- [] [Encode and Decode Strings (Leetcode Premium)](https://leetcode.com/problems/encodeanddecodestrings/)
+- [ ] [Longest Substring Without Repeating Characters](https://leetcode.com/problems/longestsubstringwithoutrepeatingcharacters/)
+- [ ] [Longest Repeating Character Replacement](https://leetcode.com/problems/longestrepeatingcharacterreplacement/)
+- [ ] [Minimum Window Substring](https://leetcode.com/problems/minimumwindowsubstring/)
+- [ ] [Valid Anagram](https://leetcode.com/problems/validanagram/)
+- [ ] [Group Anagrams](https://leetcode.com/problems/groupanagrams/)
+- [ ] [Valid Parentheses](https://leetcode.com/problems/validparentheses/)
+- [ ] [Valid Palindrome](https://leetcode.com/problems/validpalindrome/)
+- [ ] [Longest Palindromic Substring](https://leetcode.com/problems/longestpalindromicsubstring/)
+- [ ] [Palindromic Substrings](https://leetcode.com/problems/palindromicsubstrings/)
+- [ ] [Encode and Decode Strings (Leetcode Premium)](https://leetcode.com/problems/encodeanddecodestrings/)
 
 ---
 
 ## Tree
 
-- [] [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximumdepthofbinarytree/)
-- [] [Same Tree](https://leetcode.com/problems/sametree/)
-- [] [Invert/Flip Binary Tree](https://leetcode.com/problems/invertbinarytree/)
-- [] [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binarytreemaximumpathsum/)
-- [] [Binary Tree Level Order Traversal](https://leetcode.com/problems/binarytreelevelordertraversal/)
-- [] [Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serializeanddeserializebinarytree/)
-- [] [Subtree of Another Tree](https://leetcode.com/problems/subtreeofanothertree/)
-- [] [Construct Binary Tree from Preorder and Inorder Traversal](https://leetcode.com/problems/constructbinarytreefrompreorderandinordertraversal/)
-- [] [Validate Binary Search Tree](https://leetcode.com/problems/validatebinarysearchtree/)
-- [] [Kth Smallest Element in a BST](https://leetcode.com/problems/kthsmallestelementinabst/)
-- [] [Lowest Common Ancestor of BST](https://leetcode.com/problems/lowestcommonancestorofabinarysearchtree/)
-- [] [Implement Trie (Prefix Tree)](https://leetcode.com/problems/implementtrieprefixtree/)
-- [] [Add and Search Word](https://leetcode.com/problems/addandsearchworddatastructuredesign/)
-- [] [Word Search II](https://leetcode.com/problems/wordsearchii/)
+- [ ] [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximumdepthofbinarytree/)
+- [ ] [Same Tree](https://leetcode.com/problems/sametree/)
+- [ ] [Invert/Flip Binary Tree](https://leetcode.com/problems/invertbinarytree/)
+- [ ] [Binary Tree Maximum Path Sum](https://leetcode.com/problems/binarytreemaximumpathsum/)
+- [ ] [Binary Tree Level Order Traversal](https://leetcode.com/problems/binarytreelevelordertraversal/)
+- [ ] [Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serializeanddeserializebinarytree/)
+- [ ] [Subtree of Another Tree](https://leetcode.com/problems/subtreeofanothertree/)
+- [ ] [Construct Binary Tree from Preorder and Inorder Traversal](https://leetcode.com/problems/constructbinarytreefrompreorderandinordertraversal/)
+- [ ] [Validate Binary Search Tree](https://leetcode.com/problems/validatebinarysearchtree/)
+- [ ] [Kth Smallest Element in a BST](https://leetcode.com/problems/kthsmallestelementinabst/)
+- [ ] [Lowest Common Ancestor of BST](https://leetcode.com/problems/lowestcommonancestorofabinarysearchtree/)
+- [ ] [Implement Trie (Prefix Tree)](https://leetcode.com/problems/implementtrieprefixtree/)
+- [ ] [Add and Search Word](https://leetcode.com/problems/addandsearchworddatastructuredesign/)
+- [ ] [Word Search II](https://leetcode.com/problems/wordsearchii/)
 
 ---
 
 ## Heap
 
-- [] [Merge K Sorted Lists](https://leetcode.com/problems/mergeksortedlists/)
-- [] [Top K Frequent Elements](https://leetcode.com/problems/topkfrequentelements/)
-- [] [Find Median from Data Stream](https://leetcode.com/problems/findmedianfromdatastream/)
+- [ ] [Merge K Sorted Lists](https://leetcode.com/problems/mergeksortedlists/)
+- [ ] [Top K Frequent Elements](https://leetcode.com/problems/topkfrequentelements/)
+- [ ] [Find Median from Data Stream](https://leetcode.com/problems/findmedianfromdatastream/)
 
diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -56,7 +56,7 @@
 
 - [ ] [Insert Interval](https://leetcode.com/problems/insertinterval/)
 - [ ] [Merge Intervals](https://leetcode.com/problems/mergeintervals/)
-- [ ] [Non-overlapping Intervals](overlapping Intervalshttps://leetcode.com/problems/nonoverlappingintervals/)
+- [ ] [Non-overlapping Intervals](https://leetcode.com/problems/nonoverlappingintervals/)
 - [ ] [Meeting Rooms (Leetcode Premium)](https://leetcode.com/problems/meetingrooms/)
 - [ ] [Meeting Rooms II (Leetcode Premium)](https://leetcode.com/problems/meetingroomsii/)
 

diff --git a/LeetCodeQuestions.md b/LeetCodeQuestions.md
@@ -42,43 +42,43 @@
 
 ## Graph
 
-- [] [Clone Graph](https://leetcode.com/problems/clonegraph/)
-- [] [Course Schedule](https://leetcode.com/problems/courseschedule/)
-- [] [Pacific Atlantic Water Flow](https://leetcode.com/problems/pacificatlanticwaterflow/)
-- [] [Number of Islands](https://leetcode.com/problems/numberofislands/)
-- [] [Longest Consecutive Sequence](https://leetcode.com/problems/longestconsecutivesequence/)
-- [] [Alien Dictionary (Leetcode Premium)](https://leetcode.com/problems/aliendictionary/)
-- [] [Graph Valid Tree (Leetcode Premium)](https://leetcode.com/problems/graphvalidtree/)
-- [] [Number of Connected Components in an Undirected Graph (Leetcode Premium)](https://leetcode.com/problems/numberofconnectedcomponentsinanundirectedgraph/)
+- [ ] [Clone Graph](https://leetcode.com/problems/clonegraph/)
+- [ ] [Course Schedule](https://leetcode.com/problems/courseschedule/)
+- [ ] [Pacific Atlantic Water Flow](https://leetcode.com/problems/pacificatlanticwaterflow/)
+- [ ] [Number of Islands](https://leetcode.com/problems/numberofislands/)
+- [ ] [Longest Consecutive Sequence](https://leetcode.com/problems/longestconsecutivesequence/)
+- [ ] [Alien Dictionary (Leetcode Premium)](https://leetcode.com/problems/aliendictionary/)
+- [ ] [Graph Valid Tree (Leetcode Premium)](https://leetcode.com/problems/graphvalidtree/)
+- [ ] [Number of Connected Components in an Undirected Graph (Leetcode Premium)](https://leetcode.com/problems/numberofconnectedcomponentsinanundirectedgraph/)
 ---
 
 ## Interval
 
-- [] [Insert Interval](https://leetcode.com/problems/insertinterval/)
-- [] [Merge Intervals](https://leetcode.com/problems/mergeintervals/)
-- [] [Non](overlapping Intervalshttps://leetcode.com/problems/nonoverlappingintervals/)
-- [] [Meeting Rooms (Leetcode Premium)](https://leetcode.com/problems/meetingrooms/)
-- [] [Meeting Rooms II (Leetcode Premium)](https://leetcode.com/problems/meetingroomsii/)
+- [ ] [Insert Interval](https://leetcode.com/problems/insertinterval/)
+- [ ] [Merge Intervals](https://leetcode.com/problems/mergeintervals/)
+- [ ] [Non-overlapping Intervals](overlapping Intervalshttps://leetcode.com/problems/nonoverlappingintervals/)
+- [ ] [Meeting Rooms (Leetcode Premium)](https://leetcode.com/problems/meetingrooms/)
+- [ ] [Meeting Rooms II (Leetcode Premium)](https://leetcode.com/problems/meetingroomsii/)
 
 ---
 
 ## Linked List
 
-- [] [Reverse a Linked List](https://leetcode.com/problems/reverselinkedlist/)
-- [] [Detect Cycle in a Linked List](https://leetcode.com/problems/linkedlistcycle/)
-- [] [Merge Two Sorted Lists](https://leetcode.com/problems/mergetwosortedlists/)
-- [] [Merge K Sorted Lists](https://leetcode.com/problems/mergeksortedlists/)
-- [] [Remove Nth Node From End Of List](https://leetcode.com/problems/removenthnodefromendoflist/)
-- [] [Reorder List](https://leetcode.com/problems/reorderlist/)
+- [ ] [Reverse a Linked List](https://leetcode.com/problems/reverselinkedlist/)
+- [ ] [Detect Cycle in a Linked List](https://leetcode.com/problems/linkedlistcycle/)
+- [ ] [Merge Two Sorted Lists](https://leetcode.com/problems/mergetwosortedlists/)
+- [ ] [Merge K Sorted Lists](https://leetcode.com/problems/mergeksortedlists/)
+- [ ] [Remove Nth Node From End Of List](https://leetcode.com/problems/removenthnodefromendoflist/)
+- [ ] [Reorder List](https://leetcode.com/problems/reorderlist/)
 
 ---
 
 ## Matrix
 
-- [] [Set Matrix Zeroes](https://leetcode.com/problems/setmatrixzeroes/)
-- [] [Spiral Matrix](https://leetcode.com/problems/spiralmatrix/)
-- [] [Rotate Image](https://leetcode.com/problems/rotateimage/)
-- [] [Word Search](https://leetcode.com/problems/wordsearch/)
+- [ ] [Set Matrix Zeroes](https://leetcode.com/problems/setmatrixzeroes/)
+- [ ] [Spiral Matrix](https://leetcode.com/problems/spiralmatrix/)
+- [ ] [Rotate Image](https://leetcode.com/problems/rotateimage/)
+- [ ] [Word Search](https://leetcode.com/problems/wordsearch/)
 
 ---