RosettaCodeData/Task/Reverse-a-string/JavaScript/reverse-a-string-4.js

19 lines
465 B
JavaScript

(() => {
// .reduceRight() can be useful when reversals
// are composed with some other process
let reverse1 = s => Array.from(s)
.reduceRight((a, x) => a + (x !== ' ' ? x : ' <- '), ''),
// but ( join . reverse . split ) is faster for
// simple string reversals in isolation
reverse2 = s => s.split('').reverse().join('');
return [reverse1, reverse2]
.map(f => f("Some string to be reversed"));
})();