Rotational Cipher

Ringkasan Tantangan

Create an implementation of the rotational cipher, also sometimes called the Caesar cipher.

Visit the rotational-cipher exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

Lihat Solusi Komunitas

The following are the top 3 community solutions by stars:

Solution 1 by @ErikSchierboom (⭐ 0) — View on Exercism
Solution 2 by @Bliellough (⭐ 0) — View on Exercism
Solution 3 by @dlcmh (⭐ 0) — View on Exercism

Source: Exercism nim/rotational-cipher

💡 Lihat Solusi

const lowerCaseAlphabet = toSeq('a'..'z')
const upperCaseAlphabet = toSeq('A'..'Z')

proc rotate*(text: string, shift: int): string =
  let rotateLowerCase = lowerCaseAlphabet.rotatedLeft(shift)
  let rotateUpperCase = upperCaseAlphabet.rotatedLeft(shift)

  for letter in text:
    if letter.isUpperAscii:
      result.add(rotateUpperCase[upperCaseAlphabet.find(letter)])