Category: leetcode online judge
Given the root node of a binary search tree (BST) and a value. You need to find the node in the BST that the node’s value equals the given …
Given an array of integers, 1 ≤ a ≤ n (n = size of array), some elements appear twice and others appear once. Find all the elements that appear …
Given n non-negative integers a1, a2, …, an , where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of …
Question: You are given two non-empty linked lists representing two non-negative integers. The digits are stored in reverse order and each of their nodes contain a single digit. Add …
Given an array of positive integers from 1 to n, where n is the size of the array, find the missing numbers if any numbers can only appear in …
