The Story of Stringland

The king of Stringland is employing an elite force of undercover agents to protect the kingdom from ...

Sofdor Ali and Bracket Sequence

Sofdor Ali has invented a new game. He asked his assistant Jong Bahadur ( who happens to be a monkey...

Smallest Subarray

You are given an array A of N integers A1, A2, A3, …, AN . If we select two indices (1 ≤ i ≤ j ≤ N) ...

Distinctness

A substring of string S is another string S’ which occurs in string S. For example: S = aaba and one...

Unique Substrings Query

You will be given a string s of length n. Consider substring s[i, n] (where i is the starting posit...

Simple As a Substring!

Many years have passed after Simba’s death. The jungle has a new lion cub born just a few hours ago....