Competitive-Programming

Contains solutions of Problems from various websites.

HackerRank

Challenge	Solution	Explanation
Between Two Sets	Solution	Blog
Circular Array Rotation	Solution	Blog
Drawing Book	Solution	Blog
Kangaroo	Solution	Blog
Left Rotation	Solution	Blog
Library Fine	Solution	Blog
Migratory Birds	Solution	Blog
Picking Numbers	Solution	Blog
Repeated String	Solution	Blog
Sherlock and Squares	Solution	Blog

CodeForces

Challenge	Solution	Explanation
Hit the Lottery	Solution
Kefa and First Steps	Solution	Blog

LeetCode

Challenge	Solution	Explanation
Array - 3Sum	Solution
Array - Best Time to Buy and Sell Stock	Solution
Array - Count Negative Numbers in a Sorted Matrix	Solution
Array - Find N Unique Integers Sum up to Zero	Solution
Array - Find Numbers with Even Number of Digits	Solution
Array - Find the Duplicate Number	Solution
Array - Longest Consecutive Sequence	Solution
Array - Longest Substring Without Repeating Characters	Solution
Array - Majority Element	Solution
Array - Maximum Product of Two Elements in an Array	Solution
Array - Merge Intervals	Solution
Array - Majority Element II	Solution
Array - Merge Sorted Array	Solution
Array - Next Permutation	Solution
Array - Pascal's Triangle	Solution
Array - Remove Duplicates from Sorted Array	Solution
Array - Set Matrix Zeroes	Solution
Array - Sort Array By Parity	Solution
Array - Sort Colors	Solution
Array - Trapping Rain Water	Solution
Bit Manipulation - Decode XORed Array	Solution
Bit Manipulation - Find the Difference	Solution
Bit Manipulation - Hamming Distance	Solution
Bit Manipulation - Maximum Subarray	Solution
Bit Manipulation - Missing Number	Solution
Bit Manipulation - Number Complement	Solution
Bit Manipulation - Number of 1 Bits	Solution
DP - Coin Change	Solution
DP - Edit Distance	Solution
DP - Longest Common Subsequence	Solution
DP - Longest Increasing Subsequence	Solution
DP - Maximum Product Subarray	Solution
DP - Min Cost Climbing Stairs	Solution
DP - Ones and Zeroes	Solution
Linked List - Copy List with Random Pointer	Solution
Linked List - Cycle II	Solution
Linked List - Intersection of Two Linked Lists	Solution
Linked List - Palindrome Linked List	Solution
Math - Pow(x, n)	Solution
Recursion - Combination Sum	Solution
Recursion - Combination Sum 2	Solution
Recursion - Palindrome Partitioning	Solution
Climbing Stairs	Solution
Count Good Triplets	Solution
Count the Number of Consistent Strings	Solution
Flipping an Image	Solution
Is Subsequence	Solution
Island Perimeter	Solution
Lucky Numbers in a Matrix	Solution
Minimum Value to Get Positive Step by Step Sum	Solution
Number of Good Pairs	Solution
Power of Two	Solution
Single Number III	Solution
Sum of All Subset XOR Totals	Solution
Toeplitz Matrix	Solution

InterviewBit

Challenge	Solution	Explanation
Array - Anti Diagonals	Solution
Array - Balance Array	Solution
Array - Find Duplicate In Array	Solution
Array - Largest Number	Solution
Array - Maximum Absolute Difference	Solution
Array - Min Steps In Infinite Grid	Solution
Array - Perfect Peak Of Array	Solution
Array - Pick from both sides!	Solution
Array - Spiral Order Matrix II	Solution
Array - Subarray with given XOR	Solution
Array - Wave Array	Solution
Binary Search - Allocate Books	Solution
Bit Manipulation - Number of 1 Bits	Solution
Bit Manipulation - Reverse Bits	Solution
Math - Next Similar Number	Solution
Math - Prime Sum	Solution
Math - Total Moves For Bishop!	Solution
String - Minimum Characters required to make a String Palindromic	Solution

CodeChef

Challenge	Solution	Explanation
Bit Manipulation - The Unchanging OR	Solution
Bit Manipulation - XOR and AND	Solution
String - How Many Maximums	Solution

GeeksForGeeks

Challenge	Solution	Explanation
BST - Add all greater values to every node in a BST	Solution
DP - Word Break	Solution
DP - Egg Dropping Puzzle	Solution
DP - Matrix Chain Multiplication	Solution
DP - Maximum sum increasing subsequence	Solution
DP - Palindromic patitioning	Solution
Linked List - Flattening a Linked List	Solution
Queue - Reverse First K elements of Queue	Solution
Recursion - Subset Sums	Solution
String - Longest Even Length Substring	Solution

HackerEarth

Challenge	Solution	Explanation
Roy and Code Streak	Solution	Blog

SPOJ

Challenge	Solution	Explanation
CPTTRN5 - Character Patterns (Act 5)	Solution

Also check out :
CodinGame-Solutions
Algo-Data-Structure

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