Combination Sum,Combination Sum II,Combination Sum III

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Combination Sum,Combination Sum II,Combination Sum III

39. Combination Sum Given a set of candidate numbers (C) 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 C unlimited number of times. Note: All numbers (inc…

[Leetcode 40]组合数和II Combination Sum II

[题目] 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: A…

js中sum(2,3,4)和sum(2)(3)(4)都返回9并要求扩展性

网上有很多关于sum(1)(2)(3),sum(1,2,3)之类的面试题要求输出相同的结果6并要求可以满足扩展,即有多个参数时也能符合题设的要求,所以自己写了部分例子可以大概满足这些面试题的要求 <!DOCTYPE html><html lang="en"><head> <meta charset="UTF-8"> <title>Document</title></head><…

编写一个求和函数sum，使输入sum(2)(3)或输入sum(2,3)，输出结果都为5

昨天的笔试题,做的一塌糊涂,题目考的都很基础而且很细,手写代码对我来说是硬伤啊.其中有一道是这个,然而看到题目的时候,根本没有想到arguments:然后现在就恶补一下. arguments:用在函数内部,表示传给该函数的所有的实参的集合. 虽然arguments对象并不是一个数组,但是访问单个参数的方式与访问数组元素的方式相同.例如:arguments[0],arguments[1]...arguments[n]. function foo(){ var sum = 0; console.lo…

[Swift]LeetCode40. 组合总和 II | Combination Sum II

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…

[Swift]LeetCode113. 路径总和 II | Path Sum II

Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum. Note: A leaf is a node with no children. Example: Given the below binary tree and sum = 22, 5 / \ 4 8 / / \ 11 13 4 / \ / \ 7 2 5 1 Return: [ [5,4,…

[LeetCode 112 113] - 路径和I & II (Path Sum I & II)

问题给出一棵二叉树及一个和值,检查该树是否存在一条根到叶子的路径,该路径经过的所有节点值的和等于给出的和值. 例如, 给出以下二叉树及和值22: 5 / \ 4 8 / / \ 11 13 4 / \ \ 7 2 1 函数返回true,因为存在一条根到叶子的路径5->4->11->2,其路径和为22. 初始思路鉴于题目要求找到一条路径和符合要求即可,选择层次遍历二叉树是一种比较合适的选择-保证了…

Leetcode题 112 和 113. Path Sum I and II

112题目如下: 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 r…

[Locked] Strobogrammatic Number & Strobogrammatic Number II & Strobogrammatic Number III

Strobogrammatic Number A strobogrammatic number is a number that looks the same when rotated 180 degrees (looked at upside down). Write a function to determine if a number is strobogrammatic. The number is represented as a string. For example, the nu…

Contains Duplicate,Contains Duplicate II,Contains Duplicate III

217. Contains Duplicate Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct. 判断数组是是否含有重复元素.…

Best Time to Buy and Sell Stock I && II && III

题目1:Best Time to Buy and Sell Stock Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction (ie, buy one and sell one share of the stock), design an algori…

39. Combination Sum + 40. Combination Sum II + 216. Combination Sum III + 377. Combination Sum IV

▶ 给定一个数组和一个目标值.从该数组中选出若干项(项数不定),使他们的和等于目标值. ▶ 36. 数组元素无重复 ● 代码,初版,19 ms .从底向上的动态规划,但是转移方程比较智障(将待求数分解为左右两个半段,分别找解,拼在一起,再在接缝上检查是否是重复解). class Solution { public: vector<vector<int>> combinationSum(vector<int>& candidates, int target) {…

Leetcode之回溯法专题-216. 组合总和 III（Combination Sum III）

Leetcode之回溯法专题-216. 组合总和 III(Combination Sum III) 同类题目: Leetcode之回溯法专题-39. 组合总数(Combination Sum) Leetcode之回溯法专题-40. 组合总和 II(Combination Sum II) 找出所有相加之和为 n 的 k 个数的组合.组合中只允许含有 1 - 9 的正整数,并且每种组合中不存在重复的数字. 说明: 所有数字都是正整数. 解集不能包含重复的组合. 示例 1: 输入: k = 3, n…

[LeetCode] Combination Sum III 组合之和之三

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】Combination Sum II

Combination Sum II 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 combination. Note: All numbers (including t…

【leetcode】Combination Sum III（middle）

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] Combination Sum II （递归）

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 combination. Note: All numbers (including target) will be posi…

Combination Sum III

https://leetcode.com/problems/combination-sum-iii/ 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 with…

【leetcode】Combination Sum II (middle) ☆

Given a collection of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums toT. Each number in C may only be used once in the combination. Note: All numbers (including target) will be posit…

【LeetCode】040. Combination Sum II

题目: 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 combination. Note: All numbers (including target) will be…

[LeetCode] Combination Sum IV 组合之和之四

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,…

[LeetCode] Combination Sum 组合之和

Given a set of candidate numbers (C) 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 C unlimited number of times. Note: All numbers (including target) will…

[LeetCode] 377. Combination Sum IV 组合之和之四

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,…

[LeetCode] 39. Combination Sum 组合之和

Given a set of candidate numbers (candidates) (without duplicates) and a target number (target), find all unique combinations in candidates where the candidate numbers sums to target. The same repeated number may be chosen from candidates unlimited n…

【leetcode】Combination Sum

Combination Sum Given a set of candidate numbers (C) 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 C unlimited number of times. Note: All numbers (includi…

[LeetCode] Combination Sum (bfs)

Given a set of candidate numbers (C) 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 C unlimited number of times. Note: All numbers (including target) will…

数字组合 · Combination Sum

不能重复: ［抄题］: 给出一个候选数字的set(C)和目标数字(T),找到C中所有的组合,使找出的数字和为T.C中的数字可以无限制重复被选取. 例如,给出候选数组[2,3,6,7]和目标数字7,所求的解为: [7], [2,2,3] ［思维问题］: 以为要在dfs函数中不断添加,其实用的是two sum的思想:反向寻找sum - nums[i] 为了避免重复取数,需要先排序去重［一句话思路］: ［输入量］:空: 正常情况:特大:特小:程序里处理到的特殊情况:异常情况(不合法不合理的输入):…

【Combination Sum 】cpp

题目: Given a set of candidate numbers (C) 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 C unlimited number of times. Note: All numbers (including target) w…

【转载】Combination Sum

Combination Sum Given a set of candidate numbers (C) 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 C unlimited number of times. Note: All numbers (includi…

39. Combination Sum (Java)

Given a set of candidate numbers (candidates) (without duplicates) and a target number (target), find all unique combinations in candidates where the candidate numbers sums to target. The same repeated number may be chosen from candidates unlimited n…