Non-decreasing Array

Given an array with n integers, your task is to check if it could become non-decreasing by modifying at most 1 element.

We define an array is non-decreasing if array[i] <= array[i + 1] holds for every i (1 <= i < n).

Example 1:

Input: [4,2,3]
Output: True
Explanation: You could modify the first 4 to 1 to get a non-decreasing array. 

Example 2:

Input: [4,2,1]
Output: False
Explanation: You can't get a non-decreasing array by modify at most one element.

Note: The n belongs to [1, 10,000].

 public boolean checkPossibility(int[] nums) {
         int cnt = ;                                                                    //the number of changes
         for(int i = ; i < nums.length && cnt<= ; i++){
             if(nums[i-] > nums[i]){
                 cnt++;
                 if(i-< || nums[i-] <= nums[i])nums[i-] = nums[i];                    //modify nums[i-1] of a priority
                 else nums[i] = nums[i-];                                                //have to modify nums[i]
             }
         }
         return cnt<=;
     }