Given two strings s and t which consist of only lowercase letters.String t is generated by random shuffling string s and then add one more letter at a random position.Find the letter that was added in t.

Example:

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

Output:
e

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

Solution:

func findTheDifference(s string, t string) byte {
    bs := byte(0)
    for i:=0; i < len(s); i++ {
        bs = (bs ^ s[i])
    }
    
    for i:=0; i < len(t); i++ {
        bs = (bs ^ t[i])
    }
    return bs
}