Implement atoi to convert a string to an integer.

Validate if a given string is numeric or not. Code in C++....

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

Given a string A. Return the string A after reversing the string word by word.

Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the string. If the

Given a string S, find the longest palindromic substring in S. Substring of string S: S[i...j] where 0 <= i <= j < len(S) Palindrome string:

Given a string A consisting only of lowercase characters, we need to check whether it is possible to make this string a palindrome after rem

Given a string A. The only operation allowed is to insert characters at the beginning of the string. Find how many minimum characters are ne

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