private IEnumerator IEnumRandomQuickSort(T[] sort_item, QuickSortParameter <T> sort_parameter, int left, int right)
{
int[] pivot_index = new int[1];
{
int rand_index = Mathf.FloorToInt(UnityEngine.Random.Range(left, right - float.Epsilon));
if (left != rand_index)
{
swap_temp = sort_item[left]; sort_item[left] = sort_item[rand_index]; sort_item[rand_index] = swap_temp;
dirty_items[left] = dirty_items[rand_index] |= SortItemState.Exchanged | SortItemState.Comparison;
sort_parameter.cb_action(SortState.Exchange, sort_item, dirty_items);
dirty_items[left] = dirty_items[rand_index] &= ~(SortItemState.Exchanged | SortItemState.Comparison);
}
else
{
dirty_items[rand_index] |= SortItemState.Comparison;
sort_parameter.cb_action(SortState.Compare, sort_item, dirty_items);
dirty_items[rand_index] &= ~SortItemState.Comparison;
}
}
//先頭に対して、大小を分ける。.
dirty_items[left] |= SortItemState.Pivot;
yield return(IEnumQuickSortBase(sort_item, sort_parameter, left + 1, right, left, pivot_index));
dirty_items[left] &= ~SortItemState.Pivot;
int back_ite = pivot_index[0] - 1;
if (pivot_index[0] <= left)
{
}
else
{
{//先頭と境界を入れ替える
swap_temp = sort_item[left]; sort_item[left] = sort_item[pivot_index[0]]; sort_item[pivot_index[0]] = swap_temp;
dirty_items[left] = dirty_items[pivot_index[0]] |= SortItemState.Exchanged | SortItemState.Comparison;
sort_parameter.cb_action(SortState.Exchange, sort_item, dirty_items);
dirty_items[left] = dirty_items[pivot_index[0]] &= ~(SortItemState.Exchanged | SortItemState.Comparison);
yield return(waiter);
}
}
dirty_items[pivot_index[0]] = SortItemState.SortEnd;
if (pivot_index[0] > left)
{
for (int k = right - 1; k > pivot_index[0]; --k)
{
dirty_items[k] |= SortItemState.DisableArea;
}
yield return(IEnumRandomQuickSort(sort_item, sort_parameter, left, pivot_index[0]));
for (int k = right - 1; k > pivot_index[0]; --k)
{
dirty_items[k] &= ~SortItemState.DisableArea;
}
}
//この時点で左は完成してる
if (pivot_index[0] + 1 < right)
{
yield return(IEnumRandomQuickSort(sort_item, sort_parameter, pivot_index[0] + 1, right));
}
}
/// <summary>
/// クイックソートのベース関数
/// </summary>
/// <param name="sort_item">[in,out]ソートアイテム</param>
/// <param name="comparer">[in]比較演算</param>
/// <param name="left">[in]ソートする左端(含む)</param>
/// <param name="right">[in]ソートする右端(含まず)</param>
/// <param name="pivot">[in]比較対象値</param>
/// <param name="next_pivot_index">[out]比較対象との境界位置(左側列の再右端要素)</param>
/// <returns></returns>
private IEnumerator IEnumQuickSortBase(T[] sort_item, QuickSortParameter <T> sort_parameter, int left, int right, int pivot, int[] next_pivot_index)
{
int back_ite = right;
int dst_pivot = back_ite;
int front_ite = left - 1;
while (true)
{//両端から、入れ替えの必要な二つを探して交換する
if (front_ite >= left)
{
dirty_items[front_ite] |= SortItemState.Comparison;
}
while (true)
{
if (front_ite + 1 < back_ite)
{
--back_ite;
dirty_items[back_ite] |= SortItemState.Comparison;
sort_parameter.cb_action(SortState.Compare, sort_item, dirty_items);
dirty_items[back_ite] &= ~SortItemState.Comparison;
if (sort_parameter.comparer.Compare(sort_item[pivot], sort_item[back_ite]) > 0)
{
break;
}
}
else
{
next_pivot_index[0] = back_ite - 1;
if (front_ite >= left)
{
dirty_items[front_ite] &= ~SortItemState.Comparison;
}
yield break;
}
}
if (front_ite >= left)
{
dirty_items[front_ite] &= ~SortItemState.Comparison;
}
dirty_items[back_ite] |= SortItemState.Comparison;
while (true)
{
if (front_ite + 1 < back_ite)
{
++front_ite;
dirty_items[front_ite] |= SortItemState.Comparison;
sort_parameter.cb_action(SortState.Compare, sort_item, dirty_items);
dirty_items[front_ite] &= ~SortItemState.Comparison;
if (sort_parameter.comparer.Compare(sort_item[pivot], sort_item[front_ite]) < 0)
{
break;
}
}
else
{
next_pivot_index[0] = back_ite;
dirty_items[back_ite] &= ~SortItemState.Comparison;
yield break;
}
}
dirty_items[back_ite] &= ~SortItemState.Comparison;
swap_temp = sort_item[front_ite]; sort_item[front_ite] = sort_item[back_ite]; sort_item[back_ite] = swap_temp;
dirty_items[front_ite] = dirty_items[back_ite] |= SortItemState.Exchanged | SortItemState.Comparison;
sort_parameter.cb_action(SortState.Exchange, sort_item, dirty_items);
dirty_items[front_ite] = dirty_items[back_ite] &= ~(SortItemState.Exchanged | SortItemState.Comparison);
yield return(waiter);
}
}
