c#队列取值_C# 队列

1 Queue2

3 usingSystem;4 usingSystem.Collections.Generic;5 usingSystem.Linq;6 usingSystem.Text;7 usingSystem.Threading;8

9 namespaceDataStructure10 {11 ///

12 ///队列接口13 ///

14 interface IQueue

15 {16 void EnQueue(T elem); //入队列操作

17 T DeQueue(); //出队列操作

18 T GetFront(); //取对头元素

19 int GetLength(); //求队列的长度

20 bool IsEmpty(); //判断队列是否为空

21 void Clear(); //清空队列

22 bool IsFull(); //判断队列是否为满

23 }24

25 ///

26 ///银行队列接口27 ///

28 interface IBankQueue : IQueue

29 {30 int GetCallnumber(); //获取服务号码

31 }32

34 ///

35 ///循环顺序队列36 ///

37 ///

38 class CSeqQueue : IQueue

39 {40 private int maxsize; //循环顺序队列的容量

41 private T[] data; //数组，用于存储循环顺序队列中的数据元素

42 private int front; //指示最近一个已经离开队列的元素所占有的位置循环顺序队列的对头

43 private int rear; //指示最近一个进入队列的元素的位置循环顺序队列的队尾

45 public T this[intindex]46 {47 get { returndata[index]; }48 set { data[index] =value; }49 }50

51 //容量属性

52 public intMaxsize53 {54 get { returnmaxsize; }55 set { maxsize =value; }56 }57

58 //对头指示器属性

59 public intFront60 {61 get { returnfront; }62 set { front =value; }63 }64

65 //队尾指示器属性

66 public intRear67 {68 get { returnrear; }69 set { rear =value; }70 }71

72 publicCSeqQueue()73 {74

75 }76

77 public CSeqQueue(intsize)78 {79 data = newT[size];80 maxsize =size;81 front = rear = -1;82 }83

84 //判断循环顺序队列是否为满

85 public boolIsFull()86 {87 if ((front == -1 && rear == maxsize - 1) || (rear + 1) % maxsize ==front)88 return true;89 else

90 return false;91 }92

93 //清空循环顺序列表

94 public voidClear()95 {96 front = rear = -1;97 }98

99 //判断循环顺序队列是否为空

100 public boolIsEmpty()101 {102 if (front ==rear)103 return true;104 else

105 return false;106 }107

108 //入队操作

109 public voidEnQueue(T elem)110 {111 if(IsFull())112 {113 Console.WriteLine("Queue is Full !");114 return;115 }116 rear = (rear + 1) %maxsize;117 data[rear] =elem;118 }119

120 //出队操作

121 publicT DeQueue()122 {123 if(IsEmpty())124 {125 Console.WriteLine("Queue is Empty !");126 return default(T);127 }128 front = (front + 1) %maxsize;129 returndata[front];130 }131

132 //获取对头数据元素

133 publicT GetFront()134 {135 if(IsEmpty())136 {137 Console.WriteLine("Queue is Empty !");138 return default(T);139 }140 return data[(front + 1) % maxsize];//front从-1开始

141 }142

143 //求循环顺序队列的长度

144 public intGetLength()145 {146 return (rear - front + maxsize) %maxsize;147 }148 }149

150 ///

151 ///链队列结点类152 ///

153 ///

154 class QueueNode

155 {156 private T data; //数据域

157 private QueueNode next; //引用域

158

159 public QueueNode(T val, QueueNodep)160 {161 data =val;162 next =p;163 }164

165 public QueueNode(QueueNodep)166 {167 next =p;168 }169

170 publicQueueNode(T val)171 {172 data =val;173 next = null;174 }175

176 publicQueueNode()177 {178 data = default(T);179 next = null;180 }181

182 //数据域属性

183 publicT Data184 {185 get { returndata; }186 set { data =value; }187 }188

189 //引用域属性

190 public QueueNodeNext191 {192 get { returnnext; }193 set { next =value; }194 }195 }196

197 ///

198 ///链队列类199 ///

200 ///

201 class LinkQueue : IQueue

202 {203 private QueueNode front; //队列头指示器

204 private QueueNode rear; //队列尾指示器

205 private int size; //队列结点个数206

207 //队列属性

208 public QueueNodeFront209 {210 get { returnfront; }211 set { front =value; }212 }213

214 public QueueNodeRear215 {216 get { returnrear; }217 set { rear =value; }218 }219

220 public intSize221 {222 get { returnsize; }223 set { size =value; }224 }225

226 //初始化链队列

227 publicLinkQueue()228 {229 front = rear = null;230 size = 0;231 }232

233 public intGetLength()234 {235 returnsize;236 }237

238 public voidClear()239 {240 front = rear = null;241 size = 0;242 }243

244 public boolIsEmpty()245 {246 if ((front == rear) && (size == 0))247 return true;248 else

249 return false;250

251 }252

253 //链队列没有容量限制返回false

254 public boolIsFull()255 {256 return false;257 }258

259 //入队操作

260 public voidEnQueue(T item)261 {262 QueueNode q = new QueueNode(item);263 if(IsEmpty())264 {265 front =q;266 rear =q;267 }268 else

269 {270 rear.Next =q;271 rear =q;272 }273 ++size;274 }275

276 //出对操作

277 publicT DeQueue()278 {279 if(IsEmpty())280 {281 Console.WriteLine("Queue is Empty !");282 return default(T);283 }284 QueueNode p =front;285 front =front.Next;286

287 if (front == null)288 {289 rear = null;290 }291 --size;292 returnp.Data;293 }294

295 //获取链队列头结点的值

296 publicT GetFront()297 {298 if(IsEmpty())299 {300 Console.WriteLine("Queue is Empty !");301 return default(T);302 }303 returnfront.Data;304 }305

306 }307

308

309 ///

310 ///银行叫号链队列类311 ///

312 class LinkBankQueue : LinkQueue, IBankQueue313 {314 private intcallnumber;315

316 public intCallnumber317 {318 get { returncallnumber; }319 set { callnumber =value; }320 }321

322 //获取服务号码

323 public intGetCallnumber()324 {325 if ((IsEmpty()) && callnumber == 0)326 {327 callnumber = 1;328 }329 else

330 callnumber++;331 returncallnumber;332 }333 }334

335 ///

336 ///银行叫号顺序队列类337 ///

338 class CSeqBankQueue : CSeqQueue, IBankQueue339 {340 private int callnumber; //记录系统自动产生的新来顾客的服务号码

341

342 public intCallnumber343 {344 get { returncallnumber; }345 set { callnumber =value; }346 }347

348 publicCSeqBankQueue()349 {350

351 }352

353 public CSeqBankQueue(intsize)354 : base(size)355 {356

357 }358

359 //获得服务号码

360 public intGetCallnumber()361 {362 if ((IsEmpty()) && callnumber == 0)363 {364 callnumber = 1;365 }366 else

367 {368 callnumber++;369 }370 returncallnumber;371 }372 }373

374 ///

375 ///服务窗口类376 ///

377 classServiceWindow378 {379 IBankQueue bankQ;380

381 //服务队列属性

382 publicIBankQueue BankQ383 {384 get { returnbankQ; }385 set { bankQ =value; }386 }387

388 public voidService()389 {390 while (true)391 {392 Thread.Sleep(10000);393 if (!bankQ.IsEmpty())394 {395 Console.WriteLine();396 lock(bankQ)397 {398 Console.WriteLine("请{0}号到{1}号窗口！", bankQ.DeQueue(), Thread.CurrentThread.Name);399 }400 }401 }402 }403 }404

405 classQueue406 {407

408 static voidMain()409 {410 IBankQueue bankQueue = null;411 Console.WriteLine("请选择存储结构的类型：1.顺序队列 2.链队列：");412 char selectFlag =Convert.ToChar(Console.ReadLine());413 switch(selectFlag)414 {415 /*初始化顺序队列*/

416 case '1':417 int count; //接受循环顺序队列的容量

418 Console.WriteLine("请输入队列可容纳的人数：");419 count =Convert.ToInt32(Console.ReadLine());420 bankQueue = newCSeqBankQueue(count);421 break;422 /*初始化链队列*/

423 case '2':424 bankQueue = newLinkBankQueue();425 break;426

427 }428 int windowcount = 4; //设置银行柜台的服务窗口数

429

430 ServiceWindow[] sw = newServiceWindow[windowcount];431 Thread[] swt = newThread[windowcount];432 for (int i = 0; i < windowcount; i++)433 {434 sw[i] = newServiceWindow();435 sw[i].BankQ =bankQueue;436 swt[i] = new Thread(newThreadStart(sw[i].Service));437 swt[i].Name = "" + (i + 1);438 swt[i].Start();439 }440 while (true)441 {442 Console.WriteLine("请点击触摸屏获取号码：");443 Console.ReadLine();444

445 intcallnumber;446 if (!bankQueue.IsFull())447 {448 callnumber =bankQueue.GetCallnumber();449 Console.WriteLine("您的号码是：{0}，您前面有{1}位，请等待！", callnumber, bankQueue.GetLength());450 bankQueue.EnQueue(callnumber);451 }452 else

453 Console.WriteLine("现在业务繁忙，请稍后再来！");454 Console.WriteLine();455 }456 }457 }458 }