编写一个函数,不用临时变量,直接交换numbers = [a, b]
中a
与b
的值。
示例:
输入: numbers = [1,2] 输出: [2,1]
提示:
numbers.length == 2
异或运算。
class Solution:
def swapNumbers(self, numbers: List[int]) -> List[int]:
numbers[0], numbers[1] = numbers[1], numbers[0]
return numbers
class Solution {
public int[] swapNumbers(int[] numbers) {
numbers[0] = numbers[0] ^ numbers[1];
numbers[1] = numbers[0] ^ numbers[1];
numbers[0] = numbers[0] ^ numbers[1];
return numbers;
}
}