jpraveenrajk’s gists

jpraveenrajk / cohort.rb

Last active March 16, 2016 08:49

	class Cohort < Database::Model
	def self.all
	Database::Model.execute("SELECT * FROM cohorts").map do \|row\|
	Cohort.new(row)
	end
	end

	def self.create(attributes)
	record = self.new(attributes)
	record.save

jpraveenrajk / next_academy_solution_Student_Roster_DB_from_Schema.rb

Last active March 15, 2016 11:15

	require 'sqlite3'

	# class Student
	# attr_accessor :first_name, :last_name, :created_at, :updated_at

	$db = SQLite3::Database.new "students.db"

	module StudentDB
	def self.setup
	$db.execute(

jpraveenrajk / next_academy_solution_University_Course_Database_Design.rb

Last active March 15, 2016 06:27

	http://imgur.com/QszNrs4

	<?xml version="1.0" encoding="utf-8" ?>
	<!-- SQL XML created by WWW SQL Designer, https://github.com/ondras/wwwsqldesigner/ -->
	<!-- Active URL: http://ondras.zarovi.cz/sql/demo/ -->
	<sql>
	<datatypes db="mysql">
	<group label="Numeric" color="rgb(238,238,170)">
	<type label="Integer" length="0" sql="INTEGER" quote=""/>
	<type label="TINYINT" length="0" sql="TINYINT" quote=""/>

Last active March 3, 2016 09:02

	#Tic-Tac-Toe

	10.times do

	#create an array of 4 "x" and "o" each.
	#Append(push) either "x" or "o" into the array. This is because there are 9 boxes in a board and there must be either 5 "x" and 4 "o" or vice versa.
	board = ["x", "o", "x", "o", "x", "o", "x", "o"] << ["x","o"].sample
	#Create 3 new arrays, shuffle the "x" and "o" (destructive shuffle so the same value is not in the main array anymore) and shift it so there are 3 values in each of the 3 new arrays
	Array.new(3) {p board.shuffle!.shift(3)}
	end

jpraveenrajk / nested_arrays.rb

Last active March 3, 2016 03:11 — forked from nextacademy-private/nested_arrays.rb

Nested Arrays

	# Objective 2: Chessboard

	chessboard = Array.new(8) do
	array = [0..7]
	end

	infantry_row = ["P1", "P2", "P3", "P4", "P5", "P6", "P7", "P8"]
	royalty_row = ["Rook", "Knight", "Bishop", "Queen", "King", "Bishop", "Knight", "Rook" ]

	chessboard[1] = infantry_row

jpraveenrajk / fibonacci.rb

Last active March 3, 2016 01:52 — forked from nextacademy-private/fibonacci.rb

	def fibonacci(n)
	a = 0
	b = 1

	# Compute Fibonacci number in the desired position.
	n.times do
	temp = a
	a = b
	# Add up previous two numbers in sequence.
	b = temp + b

jpraveenrajk / next_academy_solution_Anagrams_1:_Detecting_Anagrams.rb

Last active March 2, 2016 09:10

	def is_anagram?(input1, input2)

	input1 = input1.downcase.split(//).sort

	input2 = input2.downcase.split(//).sort

	return input1 == input2
	end

	puts is_anagram?("cinema", "iceman")