7 lines
259 B
JavaScript
7 lines
259 B
JavaScript
const sortedLastIndex = (arr, n) => {
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const isDescending = arr[0] > arr[arr.length - 1];
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const index = arr.reverse().findIndex(el => (isDescending ? n <= el : n >= el));
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return index === -1 ? 0 : arr.length - index;
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};
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module.exports = sortedLastIndex;
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