Algorithmic problems Improve your skill of solving algorithmic problems Problem name Level Solved Hello world EASY Sign in to save progress Reverse Words in a String EASY Sign in to save progress Even numbers EASY Sign in to save progress Fibonacci EASY Sign in to save progress Unique numbers EASY Sign in to save progress Anagrams EASY Sign in to save progress Find duplicates EASY Sign in to save progress Find maximum product of two integers EASY Sign in to save progress Find the most common number EASY Sign in to save progress Move all zeros to the end EASY Sign in to save progress Replace each element with product of every other element EASY Sign in to save progress Find maximum difference between two elements EASY Sign in to save progress Find all combinations of pairs of elements EASY Sign in to save progress Maximum profit earned by buying and selling shares EASY Sign in to save progress Maximum sum in sequence MEDIUM Sign in to save progress Find all combinations of given length MEDIUM Sign in to save progress Find largest number possible from set of given numbers MEDIUM Sign in to save progress