Given a string containing only digits, restore it by returning all possible valid IP address combinations. A valid IP address must be in the

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

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

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

There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays ( The median of the array formed