/// <summary> /// 方法一:双循环 /// </summary> /// <param name="array"></param> /// <param name="target"></param> /// <returns></returns> public static List<int[]> twoSum(int[] array, int…

leetcode - 40. Combination Sum II - Medium descrition Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T. Each number in C may only be used once in the combinat…

leetcode - 39. Combination Sum - Medium descrition Given a set of candidate numbers (C) (without duplicates) and a target number (T), find all unique combinations in C where the candidate numbers sums to T. The same repeated number may be chosen from…

Given a collection of candidate numbers (candidates) and a target number (target), find all unique combinations in candidates where the candidate numbers sums to target. Each number in candidates may only be used once in the combination. Note: All nu…

You are given a binary tree in which each node contains an integer value. Find the number of paths that sum to a given value. The path does not need to start or end at the root or a leaf, but it must go downwards (traveling only from parent nodes to…

Find all possible combinations of k numbers that add up to a number n, given that only numbers from 1 to 9 can be used and each combination should be a unique set of numbers. Ensure that numbers within the set are sorted in ascending order. Example 1…

LeetCode 1 Two Sum 解题报告 偶然间听见leetcode这个平台,这里面题量也不是很多200多题,打算平时有空在研究生期间就刷完,跟跟多的练习算法的人进行交流思想,一定的ACM算法积累可以对以后在对算法中优化带来好处.Ok,今天是我做的第一题Add Two Sum. 题目要求 Given an array of integers, find two numbers such that they add up to a specific target number. The fu…

题目: Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, where inde…

一. 题目 1. Two Sum II Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the ta…

一. 题目 1. Two SumTotal Accepted: 241484 Total Submissions: 1005339 Difficulty: Easy Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solutio…

LeetCode one Two Sum (JAVA) 简介:给定一个数组和目标值,寻找数组中符合求和条件的两个数. 问题详解: 给定一个数据类型为int的数组,一个数据类型为int的目标值target,要求是在数组中寻求两个数字,使得两个数求和的值等于给定的target,要求以数组返回符合条件的索引. 技巧:可以假设数组中没有重复元素,因为我们只返回一个符合条件的数组,所以数组中只需要一个符合要求的数字就可以了. 举例: 给定数组 nums={5,8,7,2,11},target= 10, 因…

原文链接:https://www.entityframeworktutorial.net/entityframework6/code-first-insert-update-delete-stored-procedure-mapping.aspx EF 6 Code-First系列文章目录: 1 翻译系列:什么是Code First(EF 6 Code First 系列) 2.翻译系列:为EF Code-First设置开发环境(EF 6 Code-First系列) 3.翻译系列:EF Code-…

WebGoat系列实验Buffer Overflows & Code Quality & Concurrency Off-by-One Overflows 实验需要访问OWASP Hotel页面,找出VIP客户的房间号. Step 1中需要登记用户的First Name,Last Name以及Room Number,随意填入数据,点击Submit提交即可. Step 2中需要确认住宿的时间.查看网页源代码,发现在Step 1中输入的3个参数是hidden input方式. 选择$9.99…

leetcode 系列文章目录 0. 两数之和1. 两数相加 2. 无重复字符的最长子串 3. 寻找两个有序数组的中位数 4. 最长回文子串 5. Z 字形变换 6. 整数反转 7. 字符串转换整数 (atoi) 8. 回文数 9. 正则表达式匹配 10. 盛最多水的容器 111. 整数转罗马数字…

C#刷遍Leetcode系列文章 索引 索引(陆续发布中,请保持关注) C#刷遍Leetcode面试题系列连载(1) - 入门与工具简介 C#刷遍Leetcode面试题系列连载(2): No.38 - 报数 C# 刷遍 Leetcode 面试题系列连载(3): No.728 - 自除数 C#刷遍Leetcode面试题系列连载(4):No.633 - 平方数之和 C#刷遍Leetcode面试题系列连载(5):No.593 - 有效的正方形 欢迎在留言区留下你的观点,一起讨论提高.如果今天的文章让你…

Given an array of integers, return indices of the two numbers such that they add up to a specific target. You may assume that each input would have exactly one solution, and you may not use the same element twice. Example: Given nums = [2, 7, 11, 15]…

Given a collection of candidate numbers (candidates) and a target number (target), find all unique combinations in candidates where the candidate numbers sums to target. Each number in candidates may only be used once in the combination. Note: All nu…

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 path equals the given sum. For example:Given the below binary tree and sum = 22, 5 / \ 4 8 / / \ 11 13 4 / \ \ 7 2 1 return true…

Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum. For example:Given the below binary tree and sum = 22, 5 / \ 4 8 / / \ 11 13 4 / \ / \ 7 2 5 1 return [ [5,4,11,2], [5,8,4,5] ] 112. Path Sum 的拓展,上一…

Given an array of integers that is already sorted in ascending order, find two numbers such that they add up to a specific target number. The function twoSum should return indices of the two numbers such that they add up to the target, where index1 m…

Design and implement a TwoSum class. It should support the following operations:add and find. add - Add the number to an internal data structure.find - Find if there exists any pair of numbers which sum is equal to the value. For example,add(1); add(…

Find all possible combinations of k numbers that add up to a number n, given that only numbers from 1 to 9 can be used and each combination should be a unique set of numbers. Example 1: Input: k = 3, n = 7 Output: [[1,2,4]] Example 2: Input: k = 3, n…

Given an integer array nums, find the sum of the elements between indices i and j (i ≤ j), inclusive. Example: Given nums = [-2, 0, 3, -5, 2, -1] sumRange(0, 2) -> 1 sumRange(2, 5) -> -1 sumRange(0, 5) -> -3 Note: You may assume that the array do…

Given a 2D matrix matrix, find the sum of the elements inside the rectangle defined by its upper left corner (row1, col1) and lower right corner (row2, col2). The above rectangle (with the red border) is defined by (row1, col1) = (2, 1) and (row2, co…

Given an integer array with all positive numbers and no duplicates, find the number of possible combinations that add up to a positive integer target. Example: nums = [1, 2, 3] target = 4 The possible combination ways are: (1, 1, 1, 1) (1, 1, 2) (1,…

You are given a binary tree in which each node contains an integer value. Find the number of paths that sum to a given value. The path does not need to start or end at the root or a leaf, but it must go downwards (traveling only from parent nodes to…

Given a Binary Search Tree and a target number, return true if there exist two elements in the BST such that their sum is equal to the given target. Example 1: Input: 5 / \ 3 6 / \ \ 2 4 7 Target = 9 Output: TrueExample 2: Input: 5 / \ 3 6 / \ \ 2 4…

If the depth of a tree is smaller than 5, then this tree can be represented by a list of three-digits integers. For each integer in this list: The hundreds digit represents the depth D of this node, 1 <= D <= 4. The tens digit represents the positio…

[LeetCode]129. Sum Root to Leaf Numbers 解题报告(Python) 标签(空格分隔): LeetCode 题目地址:https://leetcode.com/problems/sum-root-to-leaf-numbers/description/ 题目描述: Given a binary tree containing digits from 0-9 only, each root-to-leaf path could represent a numbe…

Leetcode系列之两数之和 给定一个整数数组 nums 和一个目标值 target,请你在该数组中找出和为目标值的那 两个 整数,并返回他们的数组下标.你可以假设每种输入只会对应一个答案.但是,你不能重复利用这个数组中同样的元素.示例:给定 nums = [2, 7, 11, 15], target = 9因为 nums[0] + nums[1] = 2 + 7 = 9所以返回 [0, 1]链接:https://leetcode-cn.com/problems/two-sum/ Python…