Created
April 11, 2017 19:38
-
-
Save lshapz/582a9ffadd5405b6d72f85c29c46cc62 to your computer and use it in GitHub Desktop.
Linked List related functions
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| class LinkedListNode | |
| attr_accessor :value, :next_node, :list | |
| def initialize(value, next_node=nil) | |
| @value = value | |
| @list = [] | |
| @next_node = next_node | |
| end | |
| def print | |
| p @value | |
| if @next_node | |
| @next_node.print | |
| end | |
| end | |
| def numberify(node, array=@list) | |
| array.push(self.value) | |
| if @next_node | |
| @next_node.numberify(self, array) | |
| end | |
| end | |
| def reverse_n_join | |
| self.list.reverse.join('').to_i | |
| end | |
| end | |
| def generate(array, node=nil) | |
| if array.empty? | |
| node | |
| elsif node.nil? | |
| new_node = LinkedListNode.new(array.pop) | |
| generate(array, new_node) | |
| else | |
| new_node = LinkedListNode.new(array.pop, node) | |
| generate(array, new_node) | |
| end | |
| end | |
| def reverse(list, previous=nil) | |
| head = list.next_node | |
| list.next_node = previous | |
| if head | |
| reverse(head, list) | |
| else | |
| list | |
| end | |
| end | |
| def sum(lista, listb) | |
| lista.numberify(lista) | |
| listb.numberify(listb) | |
| return lista.reverse_n_join + listb.reverse_n_join | |
| end | |
| node1 = LinkedListNode.new(6) | |
| node2 = LinkedListNode.new(1, node1) | |
| list1 = LinkedListNode.new(7, node2) | |
| list1.print | |
| node3 = LinkedListNode.new(2) | |
| node4 = LinkedListNode.new(9, node3) | |
| list2 = LinkedListNode.new(5, node4) | |
| list2.print | |
| p added = sum(list1, list2) | |
| added_list = generate(added.to_s.split('').map(&:to_i).reverse) | |
| added_list.print |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment