vs 2019中的行动/功能代表的问题
我试图制作一个程序，该程序从控制台读取数字序列，然后仅以分类顺序打印偶数。问题是，当我尝试从代表中的数组中删除数字时，它不起作用。我知道制作程序的方法有很多，但是我想了解更多有关代表和事件的信息。如果你们可以帮助我解决这个问题（或对该主题有任何信息），那将是非常有帮助的。谢谢！！！
我的代码：
Func<int, bool> checkIfEven = num => num % 2 == 0;
Action<int[]> sortArray = arr => Console.WriteLine(arr.Max() + " ");
Func<List<int>, int> findMaxIndex = num => num.IndexOf(num.Max());
int[] numbers = Console.ReadLine().Split(" ").Select(int.Parse).Where(checkIfEven).ToArray();
Action<List<int>> removeMax = list => list.RemoveAt(findMaxIndex(numbers.ToList()));
while (numbers.Length>0)
{
sortArray(numbers);
removeMax(numbers.ToList());
}
I tried to make a program that reads from the console a sequence of numbers and then prints only the even ones in sorting order. The problem is that when I try to remove a number from the array in the delegate it does NOT work. I know there are much simpler ways of making the program, but I want to learn more about delegates and events. If you guys can help me with this(or have any information about the topic) it would be extremely helpful. Thanks!!!
My code:
Func<int, bool> checkIfEven = num => num % 2 == 0;
Action<int[]> sortArray = arr => Console.WriteLine(arr.Max() + " ");
Func<List<int>, int> findMaxIndex = num => num.IndexOf(num.Max());
int[] numbers = Console.ReadLine().Split(" ").Select(int.Parse).Where(checkIfEven).ToArray();
Action<List<int>> removeMax = list => list.RemoveAt(findMaxIndex(numbers.ToList()));
while (numbers.Length>0)
{
sortArray(numbers);
removeMax(numbers.ToList());
}
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问题在此行中：
removemax（numbers.tolist（））;此调用：
numcks.tolist（）从数字数组，因此当removemax被称为时，它将从列表中删除一个元素，该元素是 Array的副本数字数组本身可能是故意的。The problem is in this line:
removeMax(numbers.ToList());This call:
numbers.ToList()creates a new list fromnumbersarray so whenremoveMaxis called it removes an element from a list which is a copy of arraynumbersnot thenumbersarray itself as it was probably intended.