Given an integer n, find the closest integer (not including itself), which is a palindrome. The ‘…

Different Ways to Add Parentheses Given a string of numbers and operators, return all possible results from co…

120. Triangle 题目 Given a triangle, find the minimum path sum from top to bottom. Each step you may move to adj…

  Given a 2D board and a word, find if the word exists in the grid. The word can be constructed from lett…

题目描述 Sort a linked list using insertion sort. 代码 public ListNode insertionSortList(ListNode head) { if (head =…

In a country popular for train travel, you have planned some train travelling one year in advance. The days of…

Paint Fence There is a fence with n posts, each post can be painted with one of the k colors. You have to pain…

欢迎fork and star：Nowcoder-Repository-github 137. Single Number II 题目 Given an array of integers, every element …

  Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it…

  Given a string s and a list of strings dict, you need to add a closed pair of bold tag&n…

题目： Given a binary tree, return the postorder traversal of its nodes’ values. For example: Giv…

Summary Ranges Given a sorted integer array without duplicates, return the summary of its ranges. For example,…