Add to Array-Form of Integer
Difficulty: Easy
Category: DSA
Topics: Array
Asked at: Facebook
The array-form of an integer `num` is an array representing its digits in left to right order.
For example, for `num = 1321`, the array form is `[1,3,2,1]`.
Given `num`, the array-form of an integer, and an integer `k`, return the array-form of the integer `num + k`.
Example 1:
Input: num = [1,2,0,0], k = 34
Output: [1,2,3,4]
Explanation: 1200 + 34 = 1234
Example 2:
Input: num = [2,7,4], k = 181
Output: [4,5,5]
Explanation: 274 + 181 = 455
Example 3:
Input: num = [2,1,5], k = 806
Output: [1,0,2,1]
Explanation: 215 + 806 = 1021
Example 4:
Input: num = [9,9,9,9,9,9,9,9,9,9], k = 1
Output: [1,0,0,0,0,0,0,0,0,0,0]
Explanation: 9999999999 + 1 = 10000000000
Constraints:
`1 <= num.length <= 104`
`0 <= num[i] <= 9`
`num` does not contain any leading zeros except for the zero itself.
`1 <= k <= 104`