/**
 * Sort an array of numbers in-place and in ascending order using heap sort.
 *
 * Time complexity: O(n*log(n))
 *
 * Space complexity: O(log(n)) for recursion stack in heapify
 *
 * @param arr - array of numbers to sort
 */
declare const heapSort: (arr: number[]) => void;
export default heapSort;
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