7 lines
297 B
JavaScript
7 lines
297 B
JavaScript
module.exports = binarySearch = (arr, val, start = 0, end = arr.length - 1) => {
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if (start > end) return -1;
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const mid = Math.floor((start + end) / 2);
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if (arr[mid] > val) return binarySearch(arr, val, start, mid - 1);
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if (arr[mid] < val) return binarySearch(arr, val, mid + 1, end);
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return mid;
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} |