Solving Find the Difference in go. Please try yourself first to solve the problem and submit your implementation to LeetCode before looking into solution.

Problem Description

Example:

Input:
s = "abcd"
t = "abcde"

Output:
e

Explanation:
'e' is the letter that was added.

See the full details of the problem Find the Difference at LeetCode

Originally posted at: @github.com/halfrost/LeetCode-Go