def caesarCipher(s, k):
    # Write your code here
    alphabet = 'abcdefghijklmnopqrstuvwxyz'
    k = k % 26
    alphabet_rot = alphabet[k:] + alphabet[:k]
    result = []
    for i in range(len(s)):
        for idx, char in enumerate(alphabet):
            if s[i] == char:
                result.append(alphabet_rot[idx])
            elif s[i] == char.upper():
                result.append(alphabet_rot[idx].upper())
        if s[i].isalpha() == False:
            result.insert(i, s[i])
    return ''.join(result)