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Encrypting a string based on an algorithm using JavaScript
Problem
We are required to write a JavaScript function that takes in a string and encrypts it based on the following algorithm −
The string contains only space separated words.
We need to encrypt each word in the string using the following rules−
The first letter needs to be converted to its ASCII code.
The second letter needs to be switched with the last letter.
Therefore, according to this, the string ‘good’ will be encrypted as ‘103doo’.
Example
Following is the code −
const str = 'good';
const encyptString = (str = '') => {
const [first, second] = str.split('');
const last = str[str.length - 1];
let res = '';
res += first.charCodeAt(0);
res += last;
for(let i = 2; i < str.length - 1; i++){
const el = str[i];
res += el;
};
res += second;
return res;
};
console.log(encyptString(str));Output
103doo
Updated on: 20-Apr-2021
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