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  1. Caesar Cipher
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Caesar Cipher

  • victor_reial
     + 0 comments

    Python best solution

    If you’re looking for solutions to the 3-month preparation kit in either Python or Rust, you can find them below: my solutions 

    def caesar_cipher(s, k):
    # Time complexity: O(n)
    # Space complexity (ignoring input): O(n)
    new_string = ""
    for letter in s:
        if (letter.lower() <= "z") and (letter.lower() >= "a"):
            if letter == letter.lower():
                sum_a = ord("a")
            else:
                sum_a = ord("A")
            new_string += chr(
                ((ord(letter) - sum_a + k) % (ord("z") - ord("a") + 1)) + sum_a
            )
        else:
            new_string += letter

    return new_string