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Complete the caesarCipher function in the editor below.caesarCipher has the following parameter(s):string s: cleartextint k: the alphabet rotation factorReturnsstring: the encrypted string

Question

Complete the caesarCipher function in the editor below.caesarCipher has the following parameter(s):string s: cleartextint k: the alphabet rotation factorReturnsstring: the encrypted string

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Solution

Sure, here is a Python solution for the Caesar Cipher function:

def caesarCipher(s, k):
    encrypted_string = ""
    for i in s:
        if i.isalpha():
            ascii_offset = ord('a') if i.islower() else ord('A')
            encrypted_string += chr((ord(i) - ascii_offset + k) % 26 + ascii_offset)
        else:
            encrypted_string += i
    return encrypted_string

Here's how it works:

  1. We initialize an empty string encrypted_string to store the result.
  2. We iterate over each character i in the input string s.
  3. If the character i is an alphabet letter (checked using isalpha()), we calculate its encrypted version. We first determine the ASCII value of 'a' or 'A' depending on whether i is a lowercase or uppercase letter. This is stored in ascii_offset.
  4. We then find the ASCII value of i, subtract ascii_offset from it, add k (the rotation factor), and then find the remainder when divided by 26 (the number of letters in the English alphabet). This gives us the ASCII value of the encrypted letter, to which we add ascii_offset to get back into the correct ASCII range for alphabetic characters. We convert this ASCII value back to a character using chr() and append it to encrypted_string.
  5. If i is not an alphabet letter, we simply append it to encrypted_string as it is.
  6. Finally, we return encrypted_string as the result.

This problem has been solved

Similar Questions

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What is the ciphertext of "software" using a Caesar cipher?

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You are given a string s and an integer k. Encrypt the string using the following algorithm:For each character c in s, replace c with the kth character after c in the string (in a cyclic manner).Return the encrypted string. Example 1:Input: s = "dart", k = 3Output: "tdar"Explanation:For i = 0, the 3rd character after 'd' is 't'.For i = 1, the 3rd character after 'a' is 'd'.For i = 2, the 3rd character after 'r' is 'a'.For i = 3, the 3rd character after 't' is 'r'.Example 2:Input: s = "aaa", k = 1Output: "aaa"Explanation:As all the characters are the same, the encrypted string will also be the same. Constraints:1 <= s.length <= 1001 <= k <= 104s consists only of lowercase English letters.

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