sorthelp
heapsort(testvector, j, sizeof(testvector[0]), sorthelp);
mergesort(testvector, j, sizeof(testvector[0]), sorthelp);
qsort(testvector, j, sizeof(testvector[0]), sorthelp);
mergesort(testarray, (size_t)elts, sizeof(int), sorthelp);
WikiSort(testarray, (size_t)elts, sizeof(int), sorthelp);
qsort(testarray, (size_t)elts, sizeof(int), sorthelp);
heapsort(testarray, (size_t)elts, sizeof(int), sorthelp);