求1-5的和/積。1+2+3+4+5,1*2*3*4*5

public static void nu(){
        int count=0;
        for(int i=1;i<6;i++){
            count=count+i;
        }
        System.out.println(count);
        count=1;
        for(int i=1;i<6;i++){
            count=count*i;
        }
        System.out.println(count);
    }