Featured on Awesome-algorithms & Ruby-bookmarks
This repository contains Ruby implementation of various Algorithms and Data structures and solution of many challenges of HackerRank and Codility
- Binary Search
- Ubiquitous Binary Search (Binary search implementation with various applications)
- Problems based on Binary Search
- Find fixed point in sorted array
- Find smallest missing number in sorted array
- Find majority element in sorted array
- Find minimum element in sorted rotated array
- Search element in sorted rotated array
- Find maximum element in a Bitonic Array
- Find no. of occurences of an element in a sorted Array
- Find floor and ceil of given element in a sorted Array
- Find the element with odd occurences if all other elements have even occurences
- Find the median of two sorted array of equal size
- Bubble Sort
- Optimized Bubble Sort
- Selection Sort
- Insertion Sort
- Shell Sort
- Merge Sort
- Quick Sort
- 3 way Quick Sort
- Counting Sort
- Pancake Sort
- Sort array in wave form
- Sort a given array by frequency of elements
- Swapping two numbers
- Algorithm for reversing an array
- Algorithms for array rotation
- Juggling Algorithm for array rotation
- Reversal Algorithm for array rotation
- Block Swap Algorithm for array rotation
- Subarray Problems(Kadane's Algorithm)
- Find missing number in array
- Shuffling an Array
- Find pair in array with sum equal to given value
- Find pair in array with difference equal to given value
- Find pair in array with sum closest to given value
- Find triplet in array with sum equal to given value
- Find Pythagorean triplet in given array
- Find equilibrium index in an array
- Find fixed point in an array
- Dutch National Flag Problem
- Move all zeros to the end of array
- Find all Leaders in an array
- Find smallest missing number in sorted array
- Majority Element in an array
- Find minimum element in sorted rotated array
- Search element in sorted rotated array
- Find maximum element in a Bitonic Array
- Find no. of occurences of an element in a sorted Array
- Find floor and ceil of given element in a sorted Array
- Replace every element by product of previous and next
- Find the element with odd occurences if all other elements have even occurences
- Print the maximum element in each k-sized subarray
- Print Next Greatest Element for each element of array
- Replace every element by maximum element on the right side(Next Greatest Element)
- Find the smallest and second smallest in a given array
- Find the maximum sum with no adjacent elements
- Given two sorted arrays find the union and intersection of arrays
- Given unsorted array of numbers check if numbers are consecutive
- Sort a given array by frequency of elements
- Create a product array from given array
- Find the median of two sorted array of equal size
- Given a 2D array,print its all elements in spiral order
- Find two repeating elements in given array
- Minimum length unsorted subarray,sorting which makes the array sorted
- Find max diff between 2 elements such that larger appears after smaller
- Find duplicates in array in O(n) time and constant space
- Print all distinct elements of given array
- Given an array array, find the maximum j – i such that the element later is bigger
- Find pair in array with sum equal to given value(Approach 1)
- Find pair in array with difference equal to given value(Approach 2)
- Sort a given array by frequency of elements
- Print all distinct elements of given array(Approach 2)
- Check if a given number is power of 2 or not
- Check if a given number is even or odd
- Given a number return a number with last bit unset
- Count the number of set bits(Brian Kernighan's method)
- Find missing number in array(Approach 2)
- Find two repeating elements in given array(Approach 4)
- Fast multiplication of two numbers(Russian Peasant Multiplication)
- Babylonian Method to find Square root of a number
- Find missing number in array(Approach 1)
- Find two repeating elements in given array(Approach 1)
- A Very Big Sum
- Diagnol Difference
- Plus Minus
- Simple Array Sum
- Solve Me First
- Staircase
- Time Conversion
- Angry Professor
- Chocolate Feast
- Cut The Sticks
- Find Digits
- Service Lane
- Sherlock And Squares
- Sherlock And The Beast
- Utopian Tree
1.Modified Kaprekar Number~New approach added by @madmantalking
- FrogRiverOne
- MaxCounters
- MissingInteger
- PermCheck
- CountDiv
- MinAvgTwoSlice
- Passing Cars