Problem: Compare Version Numbers Problem Statement: Compare two version numbers version1 and version2. If version1 > version2 return 1,...

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.