数组中交换两个数字

public static void swap(int[] numbers, int i, int j) {
        int temp = numbers[i];
        numbers[i] = numbers[j];
        numbers[j] = temp;
    }

    public static void swap1(int[] numbers, int i, int j) {
        numbers[i] = numbers[i] + numbers[j];
        numbers[j] = numbers[i] - numbers[j];
        numbers[i] = numbers[i] - numbers[j];
    }

    public static void swap2(int[] numbers, int i, int j) {
        numbers[i] = numbers[i] ^ numbers[j];
        numbers[j] = numbers[i] ^ numbers[j];
        numbers[i] = numbers[i] ^ numbers[j];
    }