The Blue Bridge Cup Algorithm Improves Simple Addition

Original title link: http://lx.lanqiao.cn/problem.page?gpid=T332

Welcome to my Blue Bridge Cup OJ Problem Solution~ https://blog.csdn.net/richenyunqi/article/details/80192062

 Algorithms improve simple addition  

Time limit: 1.0s Memory limit: 256.0MB

Problem Description

　　Four of the natural numbers less than 10 are divisible by 3 or 5 (3, 5, 6, 9), and their sum is 23.
　　Please calculate the sum of all natural numbers less than 1000 that are divisible by 3 or 5. Then use standard output to cout to output your results.

input format

　　without.

output format

　　One integer per line, representing your result.

JAVA code:

public class Main {
	public static void main(String[] args) {
		int k=0;
		for(int i=3;i<1000;++i){
			if(i%3==0||i%5==0){
				k+=i;
			}
		}
		System.out.println(k);
	}
}