[https://leetcode.com/problems/add-to-array-form-of-integer/](https://leetcode.com/problems/add-to-array-form-of-integer/) For a non-negative integer X, the array ...
For a non-negative integer X, the array-form of X is an array of its digits in left to right order. For example, if X = 1231, then the array form is [1,2,3,1]. Given the array-form A of a non-negative ...