请问leetcode34 我这个二分法为什么超时了

来源：3-1 从二分查找法看如何写出正确的程序

Y1ng

2020-02-14

class Solution {
    public int[] searchRange(int[] nums, int target) {
        int[] res = new int[]{-1, -1};
        int n = nums.length;
        if(nums == null || n == 0 || target < nums[0] || target > nums[n - 1]) {
            return res;
        }
        res[0] = findStart(nums, target);
        res[1] = findEnd(nums, target);
        return res;
    }
    
    private int findStart(int[] nums, int target) {
        int start = 0;
        int end = nums.length - 1;
        while(start < end) {
            int mid = start + (end - start) / 2;
            if(nums[mid] >= target) {
                end = mid;
            } else {
                start = mid + 1;
            }
        }
        return (nums[start] == target)? start : -1;
    }
    
    private int findEnd(int[] nums, int target) {
        int start = 0;
        int end = nums.length - 1;
        while(start < end) {
            int mid = start + (end - start) / 2;
            if(nums[mid] <= target) {
                start = mid;
            } else {
                end = mid - 1;
            }
        }
        return (nums[end] == target)? end : -1;
    }
}

图片描述请问是哪一行出错了呢？
谢谢