Category: algorithms

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 …

Question : Given a sorted list represented by a directional link structure (as follows), remove the duplicates and return the new list. /** * Definition for singly-linked list. * …

Given two binary trees (defined structure in C++ as follows), check if they are identical (same tree structure and the values to the nodes are also the same): /** …