JAVA 基础编程练习题27 程序 27 求素数

Posted 2022-08-19 denggelin

 

27 【程序 27 求素数】

题目：求 100 之内的素数

 

package cskaoyan;

public class cskaoyan27 
	@org.junit.Test
	public void prime() 
		int mix = 1;
		int max = 100;

		for (int i = mix; i <= max; i++) 
			if (isPrime(i)) 
				System.out.println(i);
			
		
	

	private boolean isPrime(int number) 
		boolean flag = true;

		if (number < 2) 
			flag = false;
		 else if (number == 2) 
			flag = true;
		 else 
			for (int i = 2; i <= Math.sqrt(number); i++) 
				if (number % i == 0) 
					flag = false;
					break;
				
			
		

		return flag;