Java Perm

package javaapplication3;

public class Permutation {
    public static int count = 0;

    public static void permute(char[] a, int l, int r){
        int i;
        if (l == r) {
            count += 1;
            System.out.println(a);
        }
        else {
            for (i = l; i <= r; i++){
                char temp = a[l];
                a[l] = a[i];
                a[i] = temp;

                permute(a, l+1, r);

                char temp2 = a[l];
                a[l] = a[i];
                a[i] = temp2;
            }
        }
    }

    public static void main(String[] args){
        char[] str = {'c', 'a', 't', 'd', 'o', 'g'};
        int n = str.length;
        permute(str, 0, n-1);
        System.out.println("\nCount: " + count);
    }

}