#pragma once

template <typename T>
void arraysort(T *array, int size, int (*comp)(T *a, T *b)) {
	// this is shellsort
	static const int gaps[] = {3548, 1577, 701, 301, 132, 57, 23, 10, 4, 1};
	static const int gapsize = 10;

	for (int g = 0; g < gapsize; ++g) {
		const int gap = gaps[g];
		for (int i = gap; i < size; i += 1) {
			T tmp = array[i];
			int j;
			for (j = i; (j >= gap) && (comp(array + j - gap, &tmp) > 0);
				 j -= gap)
				array[j] = array[j - gap];
			array[j] = tmp;
		}
	}
}

template <typename T>
bool arraysort_check(T *array, int size, int (*comp)(T *a, T *b)) {
	for (int i = 0; i < size - 1; ++i) {
		if (comp(array + i, array + i + 1) > 0) {
			return false;
		}
	}
	return true;
}