Leetcode Problem 67, [Add binary] easy java solution.

Heyy all coders, in this video we are going to solve the Add binary problem of leetcode. We will add the given binary numbers and print the result in binary.

Description :
Given two binary strings a and b, return their sum as a binary string.

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

Example 2:
Input: a = "1010", b = "1011"
Output: "10101"