Contents

export default class RotationalCipher {
    static rotate(text: string, shiftBy: number) {
        return [...text]
            .map((c) => {
                const isUpper = c.toUpperCase() === c
                const isAlpha = c.match(/[a-z]/i)
                const caseCharCode = (isUpper ? "A" : "a").charCodeAt(0)
                if (isAlpha) {
                    const charCode = c.charCodeAt(0)
                    return String.fromCharCode(
                        (charCode - caseCharCode + shiftBy) % 26 + caseCharCode
                    )
                } else {
                    return c
                }
            })
            .join("")
    }
}

Version data entries

133 entries across 133 versions & 1 rubygems

Version	Path
trackler-2.2.1.159	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.158	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.157	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.156	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.155	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.154	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.153	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.152	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.151	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.150	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.149	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.148	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.147	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.146	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.145	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.144	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.143	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.142	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.141	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts
trackler-2.2.1.140	tracks/typescript/exercises/rotational-cipher/rotational-cipher.example.ts