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Decreasing order sort of alphabets in JavaScript
Problem
We are required to write a JavaScript function that takes in a lowercase English alphabets string, str, as the first and the only argument
Our function should create and return a new string based on the input string which contains characters sorted according to the reverse English alphabets.
For example, if the input to the function is −
const str = 'abcdef';
Then the output should be −
const output = 'fedcba';
Example
Following is the code −
const str = 'abcdef';
const reverseSorting = (str = '') => {
const strArr = str.split('');
const mapString = 'abcdefghijkmnopqrstuvwxyz';
const sorter = (a, b) => {
return mapString.indexOf(b) - mapString.indexOf(a);
};
strArr.sort(sorter);
return strArr.join('');
};
console.log(reverseSorting(str));Output
Following is the console output −
fedcba
Updated on: 21-Apr-2021
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