HackerRank.cpp

Random HackerRank challenges

C++

Sorting

• Merge Sort aka "Counting Inversions" at HR HARD

Graphs

• BFS Shortest Reach aka "BFS: Shortest Reach in a Graph" at HR HARD

Priority Heaps

• Running Median aka "Find the Running Median" at HR HARD

Dynamic Programming

• Coin Change aka "DP: Coin Change" at HR HARD

Misc

• Flood Fill aka "DFS: Connected Cell in a Grid" at HR HARD
• Linked List Cycle aka "Linked Lists: Detect a Cycle" at HR EASY
• Primes aka "Time Complexity: Primality" at HR MEDIUM

Java

See HackerRank repo