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L1-008 求整数段和 (10 分)
**
之前代码一直提示我格式错误,忽略了个数为5的情况。
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner (System.in);
int n1=sc.nextInt();
int n2=sc.nextInt();
int n=1;
int sum=0;
for(int i=n1;i<=n2;i++) {
if(n%5==0) {
System.out.printf("%5d",i);
System.out.println();
n++;
}else {
System.out.printf("%5d",i);
n++;
}
sum+=i;
}
if((n2-n1+1)%5==0) {
System.out.println("Sum = "+sum);
}else {
System.out.println();
System.out.println("Sum = "+sum);
}
}
}