洗牌算法 发表于 2020-05-25 https://leetcode-cn.com/problems/shuffle-an-array/solution/xi-pai-suan-fa-shen-du-xiang-jie-by-labuladong/ void shuffle(int[] arr) { int n = arr.length(); for (int i = 0 ; i < n; i++) { // 从 i 到最后随机选一个元素 int rand = randInt(i, n - 1); swap(arr[i], arr[rand]); } } ``