Swap Nodes in Pairs Given a linked list, swap every two adjacent nodes and return its head. For example, Given…

Combinations Given two integers n and k, return all possible ombinations of k numbers out of 1 … n. For …

Palindrome Number Determine whether an integer is a palindrome. Do this without extra space. 反转比较法 Reverse and…

1. 题目 Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest …

  Given an array where elements are sorted in ascending order, convert it to a height balanced BST. For t…

There are a total of n courses you have to take, labeled from 0 to n-1. Some courses may have prerequisites, f…

Merge Intervals 最新更新请见 https://yanjia.me/zh/2019/02/… Given a collection of intervals, merge all overlap…

我的博客：http://blog.csdn.net/yano_nankai LeetCode题解：https://github.com/LjyYano/LeetCode LeetCode之Array题目汇总 LeetCo…

题目： Given a string S and a string T, count the number of distinct subsequences of T i…

题目描述 Given an array of words and a length L, format the text such that each line has exactly L characters and …

  Write a program to find the nth super ugly number. Super ugly numbers are positive numbers whose a…

Given an integer n, generate all structurally unique BST’s (binary search trees) that store values 1 …