/// <summary>
/// 选择数组中的某类成员形成单独的数组
/// </summary>
/// <typeparam name="T">数据类型</typeparam>
/// <typeparam name="Tkey">数据类型的某个成员类型</typeparam>
/// <param name="array">数据类型的对象数组</param>
/// <param name="handler">选择委托</param>
/// <returns></returns>
public static Tkey[] Select <T, Tkey>(T[] array, SelectHandle <T, Tkey> handler)
{
Tkey[] arr = new Tkey[array.Length];
for (int i = 0; i < array.Length; i++)
{
arr[i] = handler(array[i]);
}
return(arr);
}
/// <summary>
/// 获取数组最大最小值对象
/// </summary>
/// <typeparam name="T">数据类型</typeparam>
/// <typeparam name="Tkey">数据类型属性</typeparam>
/// <param name="array">数据类型对象数组</param>
/// <param name="handler">选择委托</param>
/// <param name="isMin">是否最小值，默认最大值</param>
/// <returns></returns>
public static T GetBy <T, Tkey>(T[] array, SelectHandle <T, Tkey> handler, bool isMin = false) where Tkey : IComparable <Tkey>
{
T max = array[0];
int parable = isMin ? 1 : -1;
for (int i = 1; i < array.Length; i++)
{
if (handler(max).CompareTo(handler(array[i])) == parable)
{
max = array[i];
}
}
return(max);
}
/// <summary>
/// 数组排序
/// </summary>
/// <typeparam name="T">数据类型</typeparam>
/// <typeparam name="Tkey">数据类型属性</typeparam>
/// <param name="array">数据类型的对象数组</param>
/// <param name="handler">选择委托</param>
/// <param name="isReverse">是否反转，默认升序排列</param>
public static void OrderBy <T, Tkey>(T[] array, SelectHandle <T, Tkey> handler, bool isReverse = false) where Tkey : IComparable <Tkey>
{
for (int i = 0; i < array.Length - 1; i++)
{
for (int j = i + 1; j < array.Length; j++)
{
if (handler(array[i]).CompareTo(handler(array[j])) > 0)
{
var temp = array[i];
array[i] = array[j];
array[j] = temp;
}
}
}
if (isReverse)
{
Array.Reverse(array);
}
}
