Category: programming languages

Introduction You probably came across the term ‘Tail Recursion’ or ‘Tail Recursive’ before. You even have written a piece of Tail Recursive functions/algorithms without knowing it. So, what is …

You probably came across the following declaration in C# and wonder what the hell does keyword this do. namespace ConsoleApplication1 { public static class Numbers { public static int AddOne(this …

Question:  Given a string containing only numbers, restore it by returning all possible IP addresses (in a vector) Original Problem Page: http://oj.leetcode.com/problems/restore-ip-addresses/ Examples: Given "25525511135", return . (Order does not matter) A …

Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. Note: For the purpose of this problem, we define empty string as valid …

Question: Given an array and a element, remove all instances of that value in place and return the new length. The order of elements can be changed and it …