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ff8c00/Easy.html

Created April 4, 2018 10:38
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Reddit Daily Programmer 355 Easy
Raw
Easy.html
<html>
<head>
<script>
function encode(keyword, message) {
var alphabet, table, i, result, j, k;
alphabet = "abcdefghijklmnopqrstuvwxyz".split("");
table = [];
for (i = 0; i < alphabet.length; i++) {
table.push(alphabet.slice());
alphabet.push(alphabet.shift());
}
result = [];
for (i = 0; i < message.length; i++) {
j = alphabet.indexOf(keyword[i % keyword.length]);
k = alphabet.indexOf(message[i]);
result.push(table[j][k]);
}
return result;
}
function decode(keyword, message) {
var alphabet, table, i, result, j, k;
alphabet = "abcdefghijklmnopqrstuvwxyz".split("");
table = [];
for (i = 0; i < alphabet.length; i++) {
table.push(alphabet.slice());
alphabet.push(alphabet.shift());
}
result = [];
for (i = 0; i < message.length; i++) {
j = alphabet.indexOf(keyword[i % keyword.length]);
k = table[j].indexOf(message[i]);
result.push(alphabet[k]);
}
return result;
}
function run() {
var keyword = "python".split("");
var message = "pjphmfamhrcaifxifvvfmzwqtmyswst".split("");
return decode(keyword, message).join("");
}
</script>
</head>
<body onload="document.write(run())">
</body>
</html>
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