冒泡和快速排序

也没专门去研究过排序。只是平常用过这两种和这两种的变形：冒泡和快速。收录一下用的时候直接Copy就OK。

 public class Method      {         public static void QuickSort(List<int> arrays, int low, int high)          {              int i = low;                int j = high;                if (low < high)              {                  int key = arrays[low];                    while (i < j)                  {                      while (i < j && arrays[j] > key)                      {                          j--;                      }                      if (i < j)                      {                          arrays[i] = arrays[j];                          i++;                      }                      while (i < j && arrays[i] < key)                      {                          i++;                      }                      if (i < j)                      {                          arrays[j] = arrays[i];                            j--;                      }                  }                    arrays[i] = key;                    QuickSort(arrays, low, i - 1);                    QuickSort(arrays, i + 1, high);              }          }            public static void Bubble(List<int> sortList)          {              if (sortList == null || sortList.Count <= 0)              {                  return;              }                int flag = 1;                int i, j;                int itemCount = sortList.Count;                int itemTemp;                for (i = 1; i < itemCount && flag == 1; i++)              {                  flag = 0;                    for (j = 0; j < itemCount - i; j++)                  {                      int countfore = sortList[j];                        int countback = sortList[j + 1];                        if (countfore > countback)                      {                          flag = 1;                            itemTemp = sortList[j];                            sortList[j] = sortList[j + 1];                            sortList[j + 1] = itemTemp;                      }                  }              }          }      }