解题思路:
注意事项:
参考代码:import java.util.Scanner;
public class Main {
public static void main(String[]args){
Scanner scanner = new Scanner(System.in);
int n=scanner.nextInt();
int []a=new int[n];
for( int i=0;i<n;i++){
a[i]=scanner.nextInt();}
int b=0;
int c=0;
int d=0;
int s=0;
for (int x:a) {
if(x>0&&x<=18)
b++;
if(19<=x&&x<=35)
c++;
if(36<=x&&x<=60)
d++;
if(x>=61)
s++;
}
double f=(b*1.0/n)*100;
double g=(c*1.0/n)*100;
double h=(d*1.0/n)*100;
double j=(s*1.0/n)*100;
System.out.printf("%.2f",f);
System.out.println("%");
System.out.printf("%.2f",g);
System.out.println("%");
System.out.printf("%.2f",h);
System.out.println("%");
System.out.printf("%.2f",j);
System.out.println("%");
}
}
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