You are given an array A consisting of strings made up of the letters ‘a’ and ‘b’ only. Each string goes through a number of operations, whe

Implement strStr(). strstr - locate a substring ( needle ) in a string ( haystack ). Try not to use standard library string functions for

You are given a string S, and you have to find all the amazing substrings of S. Amazing Substring is one that starts with a vowel (a, e, i,

The count-and-say sequence is the sequence of integers beginning as follows: 1, 11, 21, 1211, 111221, ...

Problem Description: Given the array of strings A, you need to find the longest string S which is the prefix of ALL the strings in the arra

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.