[LeetCode] 113. Path Sum II 二叉树路径之和之二Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum.For example:...

[LeetCode] 78. Subsets 子集合Given a set of distinct integers, S, return all possible subsets.Note: Elements in a subset must be in non-descending order...

[LeetCode] 94. Binary Tree Inorder Traversal 二叉树的中序遍历Given a binary tree, return the inorder traversal of its nodes' values.Example:Input: [1,...

目录1. C++运算符重载介绍1.1 单目运算符与双目运算符1.2 友元运算符2. 实例讲解2.1 头文件定义2.2 实现运算符重载总结1. C++运算符重载介绍C ++ 中预定义的运算符的操作对...

[LeetCode] 50. Pow(x, n) 求x的n次方Implement pow(x, n), which calculates x raised to the power n(xn).Example 1:Input: 2.00000, 10
Outpu...

[LeetCode] 59. Spiral Matrix II 螺旋矩阵之二Given a positive integer n, generate a square matrix filled with elements from 1 to n2 in spiral orde...

目录前言一、枚举的概念二、枚举的几种用法1.直接定义枚举值，然后给普通变量赋值。2.定义带名称的枚举三、定义枚举别名四、枚举有什么用，用在哪里？最后总结：前言今天跟大家讲一...

本篇文章基于gcc中标准库源码剖析一下标准库中的模板类pointer_traits，并且以此为例理解一下traits技法。说明一下，我用的是gcc7.1.0编译器，标准库源代码也是这个版本的。还是...

[LeetCode] 37. Sudoku Solver 求解数独Write a program to solve a Sudoku puzzle by filling the empty cells.A sudoku solution must satisfy all of th...

[LeetCode] 38. Count and Say 计数和读法The count-and-say sequence is the sequence of integers with the first five terms as following:1.    ...

[LeetCode] 90. Subsets II 子集合之二Given a collection of integers that might contain duplicates, S, return all possible subsets.Note: Elements in a sub...

[LeetCode] 47. Permutations II 全排列之二Given a collection of numbers that might contain duplicates, return all possible unique permutations.Example:Input: [1,...

[LeetCode] 40. Combination Sum II 组合之和之二Given a collection of candidate numbers (candidates) and a target number (target), find all unique combinations in...

[LeetCode] 48. Rotate Image 旋转图像You are given an n x n 2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Note:Y...

[LeetCode] 52. N-Queens II N皇后问题之二The n-queens puzzle is the problem of placing nqueens on an n×n chessboard such that no two queens...

[LeetCode] 58. Length of Last Word 求末尾单词的长度Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return...

[LeetCode] 61. Rotate List 旋转链表Given the head of a linked list, rotate the list to the right by k places.Example 1:Input: head = [1...

目录1. 序言
2. 多级时间轮实现框架2.1 多级时间轮对象2.2 时间轮对象2.3 定时任务对象2.4 双向链表
2.5 联结方式
3. 多级时间轮C语言实现
3.1 双向链表头文件: list.h
3.2...

[LeetCode] 35. Search Insert Position 搜索插入位置Given a sorted array and a target value, return the index if the target is found. If not, return the index whe...

[LeetCode] 46. Permutations 全排列Given a collection of distinct integers, return all possible permutations.Example:Input: [1,2,3]
Output:
[
[1,2,3],...

[LeetCode] 39. Combination Sum 组合之和Given a set of candidate numbers (candidates) (without duplicates) and a target number (target), find...

[LeetCode] 144. Binary Tree Preorder Traversal 二叉树的先序遍历Given a binary tree, return the preorder traversal of its nodes' values.Example:Input:&...

[LeetCode] 43. Multiply Strings 字符串相乘Given two non-negative integers num1 and num2represented as strings, return the product of num1&#1...

[LeetCode] 49. Group Anagrams 群组错位词Given an array of strings, group anagrams together.Example:Input: ["eat", "tea", "tan", "ate", "nat", "bat"],
Output:
[...

[LeetCode] 53. Maximum Subarray 最大子数组Given an integer array nums, find the contiguous subarray (containing at least one number) which has the lar...

[LeetCode] 189. Rotate Array 旋转数组Given an array, rotate the array to the right by k steps, where k is non-negative.Example 1:Input:[1,2,...

[LeetCode] 32. Longest Valid Parentheses 最长有效括号Given a string containing just the characters '(' and ')', find the length of the longest va...

[LeetCode] 34. Find First and Last Position of Element in Sorted Array 在有序数组中查找元素的第一个和最后一个位置Given an array of integers nums sorte...

[LeetCode] 77.Combinations 组合项Given two integers n and k, return all possible combinations of k numbers out of 1 ... n.For exam...

[LeetCode] 112. Path Sum 二叉树的路径和Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the...

[LeetCode] 41. First Missing Positive 首个缺失的正数Given an unsorted integer array, find the smallest missing positive integer.Example 1:Input: [1,2,0]
Ou...

图 1 显示的是正态(或高斯)分布。它是一条连续的贝尔曲线，期望两边的值是相等的，可以理解为期望就是平均值。它是一个概率分布，因此曲线下方的面积是1。正态分布是由两个参数完...

[LeetCode] 57. Insert Interval 插入区间Given a set of non-overlapping intervals, insert a new interval into the intervals (merge if necessary).You may...

[LeetCode] 36. Valid Sudoku 验证数独Determine if a 9x9 Sudoku board is valid. Only the filled cells need to be validated according to the fo...

目录前言一、通过这节课程你能掌握以下知识：二、程序架构的核心理念和需求三、回调函数的作用1.输出型2.输入型四、掌握回调函数的程序编写总结前言今天给大家讲一下芯片/模...

[LeetCode] 187. Repeated DNA Sequences 求重复的DNA序列All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". W...

[LeetCode] 91. Decode Ways 解码方法A message containing letters from A-Z is being encoded to numbers using the following mapping:'A' -> 1
'B' -> 2
......

[LeetCode] 93.Restore IP Addresses 复原IP地址Given a string containing only digits, restore it by returning all possible valid IP address combinations.Example:I...

[LeetCode] 241. Different Ways to Add Parentheses 添加括号的不同方式Given a string of numbers and operators, return all possible results from computing all the...

[LeetCode] 82. Remove Duplicates from Sorted List II 移除有序链表中的重复项之二Given a sorted linked list, delete all nodes that have duplicate numbers, leaving...

目录在这里先展示我遇到的报错顺序：解决报错的前提：报错1和2：报错3：报错4：在这里先展示我遇到的报错顺序：1、运行后出现乱码（不论是输出中文还是英文）
2、检测到 #include 错误。请...

[LeetCode] 68.Text Justification 文本左右对齐Given an array of words and a width maxWidth, format the text such that each line has exactly maxWidth&#1...

[LeetCode] 72. Edit Distance 编辑距离Given two words word1 and word2, find the minimum number of operations required to convert word1 t...

[LeetCode] 76. Minimum Window Substring 最小窗口子串Given a string S and a string T, find the minimum window in S which will contain all the characters in T in...

[LeetCode] 81. Search in Rotated Sorted Array II 在旋转有序数组中搜索之二Suppose an array sorted in ascending order is rotated at some pivot unknown to you befo...

1.结构体类型C语言中的2种类型：原生类型和自定义类型，结构体类型是一种自定义类型。2.结构体使用时先定义结构体类型再用类型定义变量-> 结构体定义时需要先定义结构体类型，然...

[LeetCode] 136.Single Number 单独的数字Given a non-empty array of integers, every element appears twice except for one. Find that single one.Note:Your algorithm...

目录场景需求功能函数代码C++测试代码场景需求 之前有提到给灰度图上色的需求，在此基础上，还有一种需求，就是基于另一张参考灰度图的色板来给当前的灰度图上色，比如参考灰...

[LeetCode] 312. Burst Balloons 打气球游戏Given n balloons, indexed from 0 to n-1. Each balloon is painted with a number on it represent...

[LeetCode] 62. Unique Paths 不同的路径A robot is located at the top-left corner of a m x n grid (marked 'Start' in the diagram below).The ro...