Rotational Cipher

Challenge Overview

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

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The following are the top 3 community solutions by stars:

Solution 1 by @phijalog (⭐ 0) — View on Exercism
Solution 2 by @valli-5 (⭐ 0) — View on Exercism
Solution 3 by @ElbinBinil (⭐ 0) — View on Exercism

Source: Exercism dart/rotational-cipher

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class RotationalCipher {
  static const int lower = 65; // 'a' code value
  static const int upper = 97; // 'A' code value
  static const int len = 26; // alphabet length
  String rotate({required String text, required int shiftKey}) => text.runes
      .toList()
      .map((x) => String.fromCharCode(rotatedCode(x, shiftKey)))
      .join();

  int rotatedCode(int code, int shift) => switch (code) {