Maximize gems collected with an even number of red houses

Maximum gain in a two-player game with picking elements from array ends

Nuts and Bolts Problem OR Lock and Key

Given an array count max number of surpassers

Find fixed point in sorted array

Implement stack using linked list

Implement stack using an array

Implement Exponentiation or Power function using Bitwise Operator

Check Currency Arbitrage with Bellman Ford

Integer to English Words Problem