279 Perfect Squares 完美平方数】的更多相关文章

给定正整数 n,找到若干个完全平方数(比如 1, 4, 9, 16, ...) 使得他们的和等于 n.你需要让平方数的个数最少.比如 n = 12,返回 3 ,因为 12 = 4 + 4 + 4 : 给定 n = 13,返回 2 ,因为 13 = 4 + 9. 详见:https://leetcode.com/problems/perfect-squares/description/ Java实现: 方法一:递归实现 class Solution { public int numSquares(i…
完美平方数 279. Perfect Squares (Medium) For example, given n = 12, return 3 because 12 = 4 + 4 + 4; given n = 13, return 2 because 13 = 4 + 9. 题目描述:   给出一个正整数,求出它最少可以由几个平方数组成. 思路分析:   可以将每个整数看成图中的一个节点,如果两个整数之差为一个平方数,那么这两个整数所在的节点就有一条边. 要求解最小的平方数数量,就是求解从节点…
Level:   Medium 题目描述: 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 Expla…
Anagramic squares By replacing each of the letters in the word CARE with 1, 2, 9, and 6 respectively, we form a square number: 1296 = 362. What is remarkable is that, by using the same digital substitutions, the anagram, RACE, also forms a square num…
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…
作者: 负雪明烛 id: fuxuemingzhu 个人博客: http://fuxuemingzhu.cn/ 目录 题目描述 题目大意 解题方法 四平方和定理 动态规划 日期 题目地址:https://leetcode.com/problems/perfect-squares/ 题目描述 Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, -…
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.---…
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. 代码如下: public class Solu…
https://leetcode.com/problems/perfect-squares/ 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, retur…
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. dp…