Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. For example, given n = 12, return 3 because 12 = 4 + 4 + 4; given n = 13, return 2 because 13 = 4 + 9. Credits:Special thanks…

题目 Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. 给定正整数 n,找到若干个完全平方数(比如 1, 4, 9, 16, ...)使得它们的和等于 n.你需要让组成和的完全平方数的个数最少. Example 1: Input: n = 12 Output: 3 Explanation: 12 =…

Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. ExampleGiven n = 12, return 3 because 12 = 4 + 4 + 4Given n = 13, return 2 because 13 = 4 + 9 LeetCode上的原题,请参见我之前的博客Perfect Sq…

原题链接在这里:https://leetcode.com/problems/perfect-squares/ 题目: Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. For example, given n = 12, return 3 because 12 = 4 + 4 + 4; given n…

Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n. Example 1: Input: n = 12 Output: 3 Explanation: 12 = 4 + 4 + 4. Example 2: Input: n = 13 Output: 2 Explanation: 13 = 4 + 9. Cr…

一原题 Given a positive integer n, find the least number of perfect square numbers (, , , , ...) which sum to n. For example, given n = , because = + + ; given n = , because = + . 二.中文讲解 .这道题说是给我们一个正整数,求它最少能由几个完全平方数组成.这道题是考察四平方和定理 .根据四平方和定理,任意一个正整数均可表示为…

给定正整数 n,找到若干个完全平方数(比如 1, 4, 9, 16, ...)使得它们的和等于 n.你需要让组成和的完全平方数的个数最少. 示例 1: 输入: n = 12 输出: 3 解释: 12 = 4 + 4 + 4. 示例 2: 输入: n = 13 输出: 2 解释: 13 = 4 + 9. class Solution { public: int numSquares(int n) { vector<int> squares; for(int i = 1; i * i <=…

279. 完全平方数 279. Perfect Squares 题目描述 给定正整数 n,找到若干个完全平方数(比如 1, 4, 9, 16, ...)使得它们的和等于 n.你需要让组成和的完全平方数的个数最少. 每日一算法2019/5/10Day 7LeetCode279. Perfect Squares 示例 1: 输入: n = 12 输出: 3 解释: 12 = 4 + 4 + 4. 示例 2: 输入: n = 13 输出: 2 解释: 13 = 4 + 9. Java 实现 略 参考资…

Leetcode之广度优先搜索(BFS)专题-279. 完全平方数(Perfect Squares) BFS入门详解:Leetcode之广度优先搜索(BFS)专题-429. N叉树的层序遍历(N-ary Tree Level Order Traversal) 给定正整数 n,找到若干个完全平方数(比如 1, 4, 9, 16, ...)使得它们的和等于 n.你需要让组成和的完全平方数的个数最少. 示例 1: 输入: n = 12 输出: 3 解释: 12 = 4 + 4 + 4. 示例 2: 输…

原文地址 https://www.jianshu.com/p/2925f4d7511b 迫于就业的压力,不得不先放下 iOS 开发的学习,开始走上漫漫刷题路. 今天我想聊聊 LeetCode 上的第279题-Perfect Squares,花了挺长时间的,试了很多方法,作为一个算法新手,个人感觉这题很好,对我的水平提升很有帮助.我在这里和大家分享一下我的想法.下面是题目: Given a positive integer n, find the least number of perfect s…