1. 题目 Two elements of a binary search tree (BST) are swapped by mistake. Recover the tree without changing its…

  Given a sorted array and a target value, return the index if the target is found. If not, return the in…

  Given two strings s and t, write a function to determine if t is an anagram of s. For example, s = R…

You are a product manager and currently leading a team to develop a new product. Unfortunately, the latest ver…

  You want to build a house on an empty land which reaches all buildings in the shortest amount…

题目： Given two integers n and k, return all possible combinations of k numbers out of …

题目： Given s1, s2, s3, find whether s3 is formed by the interleaving of s1 a…

题目： Given a linked list and a value x, partition it such that all nodes less than x come before…

题目描述 Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. click to sh…

1. 题目 Given an array S of n integers, find three integers in S such that the sum is closest to a given number,…

题目描述 Write an algorithm to determine if a number is “happy”. A happy number is a number defined by the followi…

Given an array A of strings made only from lowercase letters, return a list of all characters that show up in …