rot13 cipher
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let input = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
let output = 'NOPQRSTUVWXYZABCDEFGHIJKLMnopqrstuvwxyzabcdefghijklm';
let encoded = ''
let str = 'abcd'
for(let i=0; i<str.length; i++) {
const index = input.indexOf(str[i])
encoded += output[index]
}
console.log(encoded)
const rot13 = str => str.split('')
.map(char => String.fromCharCode(
char.charCodeAt(0) + (char.toLowerCase() < 'n' ? 13 : -13)))
.join("")
x = rot13('abcd')
console.log(x)
JavaScript
INFO