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encryptors.js
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encryptors.js
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// encryptors.js
// Caesar Cipher
const caesarCipher = (str, amount = 0) => {
if (amount < 0) {
return caesarCipher(str, amount + 26);
}
let output = "";
for (let i = 0; i < str.length; i++) {
let char = str[i];
if (char.match(/[a-z]/i)) {
let code = str.charCodeAt(i);
if (code >= 65 && code <= 90) {
char = String.fromCharCode(((code - 65 + amount) % 26) + 65);
} else if (code >= 97 && code <= 122) {
char = String.fromCharCode(((code - 97 + amount) % 26) + 97);
}
}
output += char;
}
return output;
};
// Symbol Cipher
const symbolCipher = (str) => {
const symbols = {
i: "!",
"!": "i",
l: "1",
1: "l",
s: "$",
$: "s",
o: "0",
0: "o",
a: "@",
"@": "a",
e: "3",
3: "e",
b: "6",
6: "b",
};
let output = "";
for (let i = 0; i < str.length; i++) {
let char = str.toLowerCase()[i];
if (symbols[char]) {
output += symbols[char];
} else {
output += char;
}
}
return output;
};
// Reverse Cipher
const reverseCipher = (sentence) => {
let words = sentence.split(" ");
for (let i = 0; i < words.length; i++) {
words[i] = words[i].split("").reverse().join("");
}
return words.join(" ");
};
// Export the functions
module.exports = {
caesarCipher,
symbolCipher,
reverseCipher,
};