isSorted

JavaScript

var isSorted = (arr) => sort(arr).every((i, idx) => i == arr[idx])

var sort = (arr) => arr.concat().sort((a, b) => a > b)

console.log(isSorted([-Infinity, -5, 0, 3, 9]))
console.log(isSorted([3, 9, -3, 10]))

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isSorted

JavaScript

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Join the 4+ million users, and keep the JSFiddle dream alive.

Ad-free

Use pre-released features

Fiddle collections

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Console