Check Possibility

checkpossibility.java

class Solution {
    public boolean checkPossibility(int[] nums) {
        int count = 0;
        
        for (int i=1; i<nums.length;i++){
            
            if (nums[i]<nums[i-1]){
            
                if(i == 1 || nums[i-2] <= nums[i]) {
                    nums[i-1] = nums[i];
                }
                else{
                    nums[i] = nums[i-1];
                }
                
                count++;
            }
        }
        return count < 2;
    }
}