https://leetcode.com/explore/learn/card/binary-search/146/more-practices-ii/1039/\n\nWhy is this problem categoried to binary search ?\nI solved it, using simple cycle detection. But, I don\'t know the binary search solution. \nCan someone give me a hint?

https://leetcode.com/explore/learn/card/binary-search/146/more-practices-ii/1039/\n\nWhy is this problem categoried to binary search ?\nI solved it, using simpl