Find the Difference
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.
def findTheDifference(s: String, t: String):Char = {
var acc = t(t.length-1)
for (i <- 0 until s.length) {
acc ^= s(i) ^ t(i)
}
acc
}
findTheDifference("abcd", "abcde")
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