In Java, checking whether a number is a perfect square or not is a common task. A number is called a perfect square if it can be expressed as the product of an integer with itself. For example, 16 is a perfect square because it is the result of multiplying 4 × 4. In this article...
本次解题使用的开发工具是eclipse,jdk使用的版本是1.8,环境是win7 64位系统,使用Java语言编写和测试。 02 第一种解法 暴力解法,定义一个long类型的变量,for循环判断其平方是否小于num,但是不要写循环体,这样省时,最后直接判断其平方是否等于num。 public boolean isPerfectSquare(intnum) {if(num<=1) {returnnum...
java perfect-square drjava Bro*_*oke lucky-day 6推荐指数 1解决办法 3万查看次数 三个正数x,y,z的组合使得x + y,x-y,y + z,y-z,x + z和x-z是完美的正方形 早上好,我是新来的,我带来一个小问题.我无法为以下问题开发有效的算法:我需要找到三个正数x,y和z的组合,以便x + y,x - y...
解法一: 1publicclassSolution {2publicbooleanisPerfectSquare(intnum) {3if(num < 0)returnfalse;4if(num == 1)returntrue;5for(inti = 1; i<= num/i;i++){6if(i*i == num)returntrue;7}8returnfalse;9}10} 解法2: 二分查找法 (java 没有ac 仅供参考) 1publicclassSolution {2publicboolean...
Write a Java program to find the next perfect square that is greater than a specified number. Write a Java program to count the number of perfect squares within a specified numerical range. Write a Java program to determine if a number is a perfect square without using built-in square root...
367. Valid Perfect Square(完全平方数的判断) problem: Given a positive integer num, write a function which returns True if num is a perfect square else False. Note: Do not use any built-in library function such as sqrt. Example 1: Input: 16 Outp......
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. For example, given n = 12, return 3 because 12 = 4 + 4 + 4; given n = 13, return 2 because 13 =...
publicclassSolution{/** * @param n: a positive integer * @return: An integer */publicintnumSquares(intn) {// write your code hereint[] f = newint[n +1];for(inti =0; i <= n; i++) { f[i] = i;// max square number is i itself with all 1for(intj =1; j * j <= ...
Given a positive integern, find the least number of perfect square numbers (for example,1, 4, 9, 16, ...) which sum ton. Example 1: Input:n=12Output: 3 Explanation:12 = 4 + 4 + 4. 1. 1. Example 2: Input:n=13Output: 2 ...
Perfect Squares Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 460 Accepted Submission(s): 256 Problem Description A number x is called a perfect square if there exists an integer b ...