Java Program to check if a given number is perfect square Java Program to find square root of a number without sqrt method Java Program to print Armstrong numbers between a given range Java Program to Find Sum of Natural Numbers Java Program to check if a number is Positive or Negative Java...
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==1; } long i =1;for( ; i*i <num; i++);returni*i ==num; } 03 第二种解法 使用二分查找,起点为1...
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Check if a given number is a perfect square with only addition or substraction operation. eg. 25 returns true; 19 returns false. Perfect square number 有一个特性,比如0,1,4,9,16,25 他们之间的间隔分别是1,3,5,7,9,每次间隔都是i+2. 所以每次往下减i, i 更新成i+2. 看最后结果是否为0即...
We can approach this problem in multiple ways, but a simple and efficient approach is to use the Math library in Java. The Math library provides a square root function that we can use to check if a number is a perfect square. Let’s write a Java program to solve this challenge step ...
14. Check Automorphic Number Write a Java program to check whether a number is an automorphic number or not. In mathematics, an automorphic number is a number whose square "ends" in the same digits as the number itself. For example, 52= 25, 62= 36, 762= 5776, and 8906252= 793212890625...
Given a positive integer num, write a function which returns True if num is a perfect square else False. Example For example: Given num = 16 ReturnsTrue Solution class Solution { public boolean isPerfectSquare(int num) { if (num == 1) return true; ...
As you are developing your application, you can run the application in the IDE to test the application's behavior. When you run a project in the IDE, the IDE runs the application from the files in the project's build/classes folder. Typically, the project that contains the program's main...
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行、列容易,九宫技巧:i/3,j/3 37.Sudoku Solver Hard Write a program to solve a Sudoku puzzle by filling the empty cells. Empty cells are indicated by the character .. You may assume that there will be only one unique solution. A sudoku puzzle... ...and its solution numbers marked in...