[题目地址](https://leetcode.cn/problems/element-appearing-more-than-25-in-sorted-array/description) ```golang func findSpecialInteger(arr []int) int { n := len(arr) for i := 0; i < n; i++{ j := i + 1 for ; j < n && arr[i] == arr[j]; j++{} if j - 1 - i >= n / 4{ return arr[i] } i = j - 1 } return 0 } ```