66. Plus One

Runtime    0 ms
Beats      100%


Memory     40.9 MB
Beats      54.86%


class Solution {
    public int[] plusOne(int[] nums) {
        for(int i=nums.length-1;i>=0;i--){
            if(nums[i] != 9){
                nums[i]++;
                break;
            }else{
                nums[i]=0;
            }
        }
        if(nums[0]==0){
            int res[]=new int[nums.length+1];
            res[0]=1;
            return res;
        }
        return nums;
    }
}