SDE - Intern

Given 3 Strings, check whether the 3rd string contains all the characters of string 1 and 2 in any order. If all the characters are present, print "YES" otherwise print "NO".

There should not be any extra character and any missing character.

The string s contains uppercase Latin letters only.

You are given string S of length N, and an integer K. Your task is to find the length of the longest substring that contains at most K distinct characters.

You are given a string 'str' of length 'N'.

Your task is to return the longest palindromic substring. If there are multiple strings, return any.

A substring is a contiguous segment of a string.

For example :

str = "ababc"

The longest palindromic substring of "ababc" is "aba", since "aba" is a palindrome and it is the longest substring of length 3 which is a palindrome. 

There is another palindromic substring of length 3 is "bab". Since starting index of "aba" is less than "bab", so "aba" is the answer.

You have been given a non-empty grid consisting of only 0s and 1s. You have to find the number of islands in the given grid.

An island is a group of 1s (representing land) connected horizontally, vertically or diagonally. You can assume that all four edges of the grid are surrounded by 0s (representing water).