frog hops problem

Kermit, a frog hops in a particular way such that:

1. He hops 20cm in the first hop, 10cm in the second hop and 5cm in the third hop.
2. After three hops Kermit rests for a while and then again follows the same hopping pattern.

Calculate the total distance travelled by Kermit (in centimeters) for the provided number of hops. Exactly 4 numbers of hops will be provided to the program (one number per line) as per the below example.

Suppose the following number of hops is provided to the program:

4
6
3
5

Then the total distance covered should be displayed as follows:

55
70
35
65

Solution to Above Problem:


import java.util.Scanner;
public class problem1 {

public static void main(String[] args) {
int a,b,c,d;
Scanner in = new Scanner(System.in);
a = in.nextInt();
b = in.nextInt();
c = in.nextInt();
d = in.nextInt();
int[] array = {a,b,c,d};
int k = 0;

for(int i=0; i<array.length; i++){
int n = array[i];
int x = n/3;
int y = n%3;
int z = x*35;

switch(y){
case 0: k = 0 + z; break;
case 1: k = 20 + z; break;
case 2: k = 30 + z; break;
case 3: k = 35 + z; break;
}
System.out.println(k);
}
}
}