def caesarCipher(s, k):
    # Write your code here
    rotatedString=""
    allApha="abcdefghijklmnopqrstuvwxyz"
    for string in s:
        if string.isalpha():
            newIndx = allApha.index(string.lower()) + k
            if newIndx >= 26:
                newIndx = newIndx % 26 
            newChar= allApha[newIndx].upper() if string.isupper() else allApha[newIndx]
            rotatedString+= newChar
        else:
            rotatedString += string
    return rotatedString