本文实例讲述了c#内置队列类queue用法。分享给大家供大家参考。具体分析如下：
这里详细演示了c#内置的队列如何进行添加，移除等功能。
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using system;
using system.collections.generic;
class example
{
public static void main()
{
queue<string> numbers = new queue<string>();
numbers.enqueue("one");
numbers.enqueue("two");
numbers.enqueue("three");
numbers.enqueue("four");
numbers.enqueue("five");
// a queue can be enumerated without disturbing its contents.
foreach( string number in numbers )
{
console.writeline(number);
}
console.writeline("\ndequeuing '{0}'", numbers.dequeue());
console.writeline("peek at next item to dequeue: {0}",
numbers.peek());
console.writeline("dequeuing '{0}'", numbers.dequeue());
// create a copy of the queue, using the toarray method and the
// constructor that accepts an ienumerable<t>.
queue<string> queuecopy = new queue<string>(numbers.toarray());
console.writeline("\ncontents of the first copy:");
foreach( string number in queuecopy )
{
console.writeline(number);
}
// create an array twice the size of the queue and copy the
// elements of the queue, starting at the middle of the
// array.
string[] array2 = new string[numbers.count * 2];
numbers.copyto(array2, numbers.count);
// create a second queue, using the constructor that accepts an
// ienumerable(of t).
queue<string> queuecopy2 = new queue<string>(array2);
console.writeline("\ncontents of the second copy, with duplicates and nulls:");
foreach( string number in queuecopy2 )
{
console.writeline(number);
}
console.writeline("\nqueuecopy.contains(\"four\") = {0}",
queuecopy.contains("four"));
console.writeline("\nqueuecopy.clear()");
queuecopy.clear();
console.writeline("\nqueuecopy.count = {0}", queuecopy.count);
}
}
/* this code example produces the following output:
one
two
three
four
five
dequeuing 'one'
peek at next item to dequeue: two
dequeuing 'two'
contents of the copy:
three
four
five
contents of the second copy, with duplicates and nulls:
three
four
five
queuecopy.contains("four") = true
queuecopy.clear()
queuecopy.count = 0
*/
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