Add Binary

[utchak160]

Description Given two binary strings, return their sum (also a binary string).

The input strings are both non-empty and contain only characters 1 or 0.

Example 1:

Input: a = "11", b = "1" Output: "100" Example 2:

Input: a = "1010", b = "1011" Output: "10101"

@akshitagit can I work on this issue for Hacktoberfest 2020?

[Roshan13046]

I would like to work on this issue. Please assign.