class Solution:
    def findSpecialInteger(self, arr) -> int:
        count_num = int(len(arr) / 4)

        for i in range(len(arr) - count_num):
            if arr[i] == arr[i + count_num]:
                return arr[i]
```
package T有序数组中出现次数超过25的元素;

public class Solution {
    public int findSpecialInteger(int[] arr) {
        int l = arr.length / 4;
        for (int i = 0; i < arr.length - l; i++) {
            if (arr[i] == arr[i + l]) {
                return arr[i];
            } 
        }
        return -1;
    }
}