private static void swap(int[] arr,int i,int j){
arr[i] = arr[i]^arr[j];
arr[j] = arr[i]^arr[j];
arr[i] = arr[i]^arr[j];
}
使用异或运算交换数组中不同位置的值
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转载自blog.csdn.net/weixin_44495162/article/details/104126377
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