public static void sway(int[] arr,int i,int j){ if(i!=j){ //不能两个值指向同一地址 arr[i]=arr[i]^arr[j]; arr[j]=arr[i]^arr[j];//就是arr[i]^arr[j]^arr[j]就表示a arr[i]=arr[i]^arr[j];//表示arr[i]^arr[j]^arr[i]^arr[j]^arr[j]就是b } }
时间: 2023-05-18 08:05:43 浏览: 114
N vim 赢了! Neovim UI 专为 Sway/i3 设计。
This is a Java method that takes an integer array, and two indices i and j as input parameters. The method swaps the values at the i-th and j-th indices of the array using bitwise XOR operations.
The method first checks if i and j are not equal, as swapping two values at the same index would result in both values being set to the same value. If i and j are different, the method performs the following operations:
1. The value at index i is XORed with the value at index j, and the result is stored in the value at index i.
2. The value at index j is XORed with the new value at index i, and the result is stored in the value at index j.
3. The value at index i is XORed with the new value at index j, and the result is stored in the value at index i.
These three operations effectively swap the values at indices i and j without using a temporary variable.
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