Given two binary strings, return their sum (also a binary string). Example: a = "100" -> 4 in decimal b = "11" -> 3 in decimal Return a +

Given a string A representing a roman numeral. Convert A into an integer. A is guaranteed to be within the range from 1 to 3999.

Given an integer A, convert it to a roman numeral, and return a string corresponding to its roman numeral version.

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

Implement atoi to convert a string to an integer.

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

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