In this article, we will learn how to write a Java program to check whether a given number is a perfect square. Steps to Check If a Number is a Perfect Square Input the Number:First, we need to input the number that we want to check. Square Root Calculation:The square root of the ...
publicclassPerfectNumber{publicstaticvoidmain(String[] args){intfactor=0;//统计因子之和//输出10000以内的完全数for(inti=1; i <=10000; i++) {for(intj=1; j <= i/2; j++) {// i/2为最大值,因不包含小数,if(i % j ==0){//求因数1和本身,2和i/2,3和i/3,不包括本身,所以最大遍...
完全数（PerfectNumber）（Java版）5、完全数(PerfectNumber)完全数（完数）：如果⼀个数等于它的因⼦之和，则称该数为“完数”（或“完全数”）。例如，6的因⼦为1、2、3,⽽ 6=1+2+3,因此6是“完数”。内层循环时，遍历到 “i/2” 即可，因数1和 i ，2和i/2，3和i/3...不包括本⾝，...
当然,你要是把int范围内的5个Perfect Number(第5个是33550336)都找出来了,直接做判断也行。 publicbooleancheckPerfectNumber3(intnum){int[] primes = {2,3,5,7,13};for(intp: primes) {if((1<< (p -1)) * ((1<< p) -1) == num) {returntrue; } }returnfalse; } 05 小结 算法专题目前...
Check Perfect SquareWrite a Java program to test if a given number (positive integer) is a perfect square or not. Input number: 3 Output: 1 2 3 8 9 4 7 6 5 Visual Presentation:Sample Solution:Java Code:// Import Scanner class from java.util package for user input import java.util...
Learn to write a simple java program to verify if a given number is deficient number or not. The value 2n − σ(n) is called the number’s deficiency.
Learn how to check if a given number is a perfect number in Java with this simple guide and example code.
Consider you entered the mobile number like 9 0 1 0 4 8 6 2 7 5, and it will convert more likely to be (+91) 9010-486275 Java Code For Phone Number Format Here is the Java program for phone number/Mobile number validation, check detailed explanation after the output: ...
Output: Related Java Examples 1.Java program to display first n prime numbers 2.Java program to check prime number 3.Java program to check if a number is perfect square 4.Java program to check Armstrong number
When creating the program documentation, our source is precisely describing the functionality we want to document. After all, the code is the most precise documentation of the application functionality. We already have the precision, which was not feasible to have for the other way around. The do...