HackerRank

Solutions to challenges on HackerRank

• ACM ICPC Team https://www.hackerrank.com/challenges/acm-icpc-team
• Cavity Map https://www.hackerrank.com/challenges/cavity-map
• Alternating Charaters https://www.hackerrank.com/challenges/alternating-characters
• Angry Professor https://www.hackerrank.com/challenges/angry-professor
• Caesar Cipher https://www.hackerrank.com/challenges/caesar-cipher-1
• Manasa and Stones https://www.hackerrank.com/challenges/manasa-and-stones
• Chocolate Feast https://www.hackerrank.com/challenges/chocolate-feast
• Circular Array Rotation https://www.hackerrank.com/challenges/circular-array-rotation
• Compare the Triplets https://www.hackerrank.com/challenges/compare-the-triplets
• Cut the sticks https://www.hackerrank.com/challenges/cut-the-sticks
• Non-Divisible Subset https://www.hackerrank.com/challenges/non-divisible-subset
• Diagonal Difference https://www.hackerrank.com/challenges/diagonal-difference
• Closest Numbers https://www.hackerrank.com/challenges/closest-numbers
• Divisible Sum Pairs https://www.hackerrank.com/challenges/divisible-sum-pairs
• Filling Jars https://www.hackerrank.com/challenges/filling-jars
• Find Digits https://www.hackerrank.com/challenges/find-digits
• Flatland Space Stations https://www.hackerrank.com/challenges/flatland-space-stations
• Flipping bits https://www.hackerrank.com/challenges/flipping-bits
• Game of Thrones - I https://www.hackerrank.com/challenges/game-of-thrones
• Halloween Party https://www.hackerrank.com/challenges/halloween-party
• Identify Smith Numbers https://www.hackerrank.com/challenges/identify-smith-numbers
• Is Fibo https://www.hackerrank.com/challenges/is-fibo
• Encryption https://www.hackerrank.com/challenges/encryption
• Ice Cream Parlor https://www.hackerrank.com/challenges/icecream-parlor
• Two Strings https://www.hackerrank.com/challenges/two-strings
• Sherlock and Array https://www.hackerrank.com/challenges/sherlock-and-array

Medium

• Bigger is Greater https://www.hackerrank.com/challenges/bigger-is-greater
• Min Max https://www.hackerrank.com/challenges/angry-children
• Larry's Array https://www.hackerrank.com/challenges/larrys-array
• Sparse Arrays https://www.hackerrank.com/challenges/sparse-arrays
• Algorithmic Crush https://www.hackerrank.com/challenges/crush

CTCI

Data Structure

• Arrays: Left Rotation https://www.hackerrank.com/challenges/ctci-array-left-rotation

• Stacks: Balanced Brackets https://www.hackerrank.com/challenges/ctci-balanced-brackets

• Strings: Making Anagrams https://www.hackerrank.com/challenges/ctci-making-anagrams

• Hash Tables: Ransom Note https://www.hackerrank.com/challenges/ctci-ransom-note

• Queues: A Tale of Two Stacks https://www.hackerrank.com/challenges/ctci-queue-using-two-stacks

• Linked Lists: Detect a Cycle https://www.hackerrank.com/challenges/ctci-linked-list-cycle

• Trees: Is This a Binary Search Tree https://www.hackerrank.com/challenges/ctci-is-binary-search-tree

• Heaps: Find the Running Median https://www.hackerrank.com/challenges/ctci-find-the-running-median

• Tries: Contacts https://www.hackerrank.com/challenges/ctci-contacts

• Recursion: Fibonacci Numbers https://www.hackerrank.com/challenges/ctci-fibonacci-numbers

• Sorting: Bubble Sort https://www.hackerrank.com/challenges/ctci-bubble-sort

• Sorting: Comparator https://www.hackerrank.com/challenges/ctci-comparator-sorting

• Merge Sort: Counting Inversions https://www.hackerrank.com/challenges/ctci-merge-sort

• Bit Manipulation: Lonely Integer https://www.hackerrank.com/challenges/ctci-lonely-integer

• Recursion: Davis' Staircase https://www.hackerrank.com/challenges/ctci-recursive-staircase

• Time Complexity: Primality https://www.hackerrank.com/challenges/ctci-big-o

• DP: Coin Change https://www.hackerrank.com/challenges/ctci-coin-change

• Poles https://www.hackerrank.com/contests/w30/challenges/poles

• Melodious Password https://www.hackerrank.com/contests/w30/challenges/melodious-password