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Home Web Front-end JS Tutorial Encrypt strings based on algorithms using JavaScript

Encrypt strings based on algorithms using JavaScript

Sep 17, 2023 am 09:57 AM

使用 JavaScript 基于算法加密字符串

Question

We need to write a JavaScript function that receives 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 ASCII code.

    • The second letter needs to be swapped with the last letter.

#So according to this, the string "good" will be encrypted to "103doo".

Example

The following is the code -

Live demonstration

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));
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Output

103doo
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