7 lines
234 B
JavaScript
7 lines
234 B
JavaScript
const isSorted = arr => {
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const direction = arr[0] > arr[1] ? -1 : 1;
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for (let [i, val] of arr.entries())
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if (i === arr.length - 1) return direction;
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else if ((val - arr[i + 1]) * direction > 0) return 0;
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};
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module.exports = isSorted; |