c# - 排队字节数组问题

Question

最简单的例子。我正在尝试创建这样的字节数组队列:

        Queue<Byte[]> q = new Queue<Byte[]>();
        Byte[] block = new Byte[1];
        block[0] = 1;
        q.Enqueue(block);
        block[0] = 2;
        q.Enqueue(block);
        block[0] = 3;
        q.Enqueue(block);
        byte[] block1 = q.Dequeue();
        Console.WriteLine(block1[0]);
        block1 = q.Dequeue();
        Console.WriteLine(block1[0]);
        block1 = q.Dequeue();
        Console.WriteLine(block1[0]);

但实际上我的三个 block 都带有“3”，但预期是“1”“2”“3”。知道我做错了什么吗？

Answer 1

您每次都需要创建一个新数组，否则您只是更改同一个数组并将它的多个引用添加到 Queue

Queue<Byte[]> q = new Queue<Byte[]>();
Byte[] block = new Byte[1];
block[0] = 1;
q.Enqueue(block);

// Create a new array
block = new Byte[1];
block[0] = 2;
q.Enqueue(block);

// Create a new array
block = new Byte[1];
block[0] = 3;
q.Enqueue(block);
byte[] block1 = q.Dequeue();
Console.WriteLine(block1[0]);
block1 = q.Dequeue();
Console.WriteLine(block1[0]);
block1 = q.Dequeue();
Console.WriteLine(block1[0]);