1073. Adding Two Negabinary Numbers

https://leetcode.com/problems/adding-two-negabinary-numbers

Description

Given two numbers arr1 and arr2 in base -2, return the result of adding them together.

Each number is given in array format: as an array of 0s and 1s, from most significant bit to least significant bit. For example, arr = [1,1,0,1] represents the number (-2)^3 + (-2)^2 + (-2)^0 = -3. A number arr in array, format is also guaranteed to have no leading zeros: either arr == [0] or arr[0] == 1.

Return the result of adding arr1 and arr2 in the same format: as an array of 0s and 1s with no leading zeros.

Example 1:

**Input:** arr1 = [1,1,1,1,1], arr2 = [1,0,1]
**Output:** [1,0,0,0,0]
**Explanation:** arr1 represents 11, arr2 represents 5, the output represents 16.

Example 2:

**Input:** arr1 = [0], arr2 = [0]
**Output:** [0]

Example 3:

**Input:** arr1 = [0], arr2 = [1]
**Output:** [1]

Constraints:

• 1 <= arr1.length, arr2.length <= 1000

• arr1[i] and arr2[i] are 0 or 1

• arr1 and arr2 have no leading zeros

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