Golang | Leetcode Golang题解之第287题寻找重复数

题目：

题解：

func findDuplicate(nums []int) int {     slow, fast := 0, 0     for slow, fast = nums[slow], nums[nums[fast]]; slow != fast; slow, fast = nums[slow], nums[nums[fast]] { }     slow = 0     for slow != fast {         slow = nums[slow]         fast = nums[fast]     }     return slow }