Contents

class RotationalCipher {

  static rotate(text, shift) {
    return [...text].map((c) => {
      const isUpper = c.match(/[A-Z]/);
      const isAlpha = c.match(/[a-z]/i);
      const charShift = (isUpper ? 'A' : 'a').charCodeAt(0);

      return isAlpha ?
        String.fromCharCode((((c.charCodeAt(0) - charShift) + shift) % 26) + charShift) : c;
    }).join('');
  }

}

export default RotationalCipher;

Version data entries

117 entries across 117 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.179	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.178	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.177	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.176	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.175	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.174	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.173	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.172	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.171	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.170	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.169	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.167	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.166	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.165	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.164	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.163	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.162	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.161	tracks/ecmascript/exercises/rotational-cipher/example.js
trackler-2.2.1.160	tracks/ecmascript/exercises/rotational-cipher/example.js