Rodent's Revenge

import java.util.Arrays;
import java.util.Scanner;

class Viikko3_a {

    public static void main(String[] args) {
        // TODO code application logic here
        Scanner s = new Scanner(System.in);
        int n = s.nextInt();
        int k = s.nextInt();

        int[] list = new int[n];

        if (n / k >= 2) {
            metodi(n, k, list);
        } else {
            metodi(n, (n - k - 1), list);
            for (int i = 0; i < n / 2; i++) {
                int temp = list[i];
                list[i] = list[n - i - 1];
                list[n - i - 1] = temp;
            }
        }
        System.out.println(Arrays.toString(list));

    }

    private static void metodi(int n, int k, int[] list) {
        int a = 0;
        for (int i = 0; i < n; i++) {
            if (k - a > 0) {
                if (i % 2 == 0) {
                    list[i] = i + 2;
                } else {
                    list[i] = i;
                    a++;
                }
            } else {
                list[i] = i + 1;
            }
        }
    }

}

Test 1

Verdict: RUNTIME ERROR

Exception in thread "main" java.lang.ArithmeticException: / by zero
	at Viikko3_a.main(Vii...

Test 2

Verdict: RUNTIME ERROR

Exception in thread "main" java.lang.ArithmeticException: / by zero
	at Viikko3_a.main(Vii...

Test 3

Verdict: WRONG ANSWER

Test 4

Verdict: RUNTIME ERROR

Exception in thread "main" java.lang.ArithmeticException: / by zero
	at Viikko3_a.main(Vii...

Test 5

Verdict: WRONG ANSWER

Test 6

Verdict: WRONG ANSWER

Test 7

Verdict: RUNTIME ERROR

Exception in thread "main" java.lang.ArithmeticException: / by zero
	at Viikko3_a.main(Vii...

Test 8

Verdict: WRONG ANSWER

Test 9

Verdict: WRONG ANSWER

Test 10

Verdict: WRONG ANSWER

Test 11

Verdict: RUNTIME ERROR

Exception in thread "main" java.lang.ArithmeticException: / by zero
	at Viikko3_a.main(Vii...

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: WRONG ANSWER

Test 15

Verdict: WRONG ANSWER

Test 16

Verdict: WRONG ANSWER