/// <summary>
/// 將數組的某一索引位置的元素移動到指定索引位置
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="array"></param>
/// <param name="fromIndex">要移動的元素所在的索引位</param>
/// <param name="toIndex">要移動到的索引位</param>
public static void ArrayMove<T>(ref T[] array, int fromIndex, int toIndex)
{
if (
fromIndex > array.Length-1 ||
toIndex > array.Length - 1 ||
fromIndex == toIndex
) return;
T[] tempArray = new T[array.Length];
if (fromIndex > toIndex)
{
for (int i=0;i< array.Length;i++)
{
if (i == toIndex)
{
tempArray[i] = array[fromIndex];
}
else
{
if (i > fromIndex || i < toIndex)
{
tempArray[i] = array[i];
}
else
{
tempArray[i] = array[i - 1];
}
}
}
}
else if(fromIndex < toIndex)
{
for (int i = 0; i < array.Length; i++)
{
if (i == toIndex)
{
tempArray[i] = array[fromIndex];
}
else
{
if (i < fromIndex || i > toIndex)
{
tempArray[i] = array[i];
}
else
{
tempArray[i] = array[i + 1];
}
}
}
}
array = tempArray;
}
使用
int[] i = new int[]{1,2,3,4};
ArrayMove(ref i , 0, 1);
ArrayMove(ref i , 3, 0);
結果:
{2,1,3,4}
{4,1,2,3}