Apple Division

import java.util.*;
import java.lang.Math;
public class testing{

    public static void main( String args[]){
        String b = "3 2 7 4 1";
        String[] arrS = b.split(" ");
        ArrayList<Integer> num = new ArrayList<Integer>();
        for(String h : arrS){
        //    System.out.println(Integer.parseInt(h));
            num.add(Integer.parseInt(h));
        }
        Collections.sort(num);
        //for(int i : num){
        //    System.out.println(i);
        //}
        long z = 10000000000L;
        for(int f = 0; f < num.size()-1; f++){
            if((long)Math.abs(num.get(f)-num.get(f+1)) < z){
                z = (long)Math.abs(num.get(f)-num.get(f+1));
            }
        }
        System.out.println(z);
}
}

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: ACCEPTED

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: WRONG ANSWER

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: ACCEPTED

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: WRONG ANSWER

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER

Test 15

Verdict: ACCEPTED

Test 16

Verdict: WRONG ANSWER

Test 17

Verdict: WRONG ANSWER

Test 18

Verdict: ACCEPTED