用java编程求∑1+∑2+…∑100
package myproject01;
public class WhileFor {
public static void main(String[]args){
int sum=0;
for(int i=1;i<=100;i++){
for(int j=0;j<=i;j++){
sum+=j;
}
}
System.out.println(sum);
运行结果:171700
用java编程求∑1+∑2+…∑100
package myproject01;
public class WhileFor {
public static void main(String[]args){
int sum=0;
for(int i=1;i<=100;i++){
for(int j=0;j<=i;j++){
sum+=j;
}
}
System.out.println(sum);
运行结果:171700