| 42 | | |
| 43 | | |
| 44 | | 依靠小组成员的集体智慧与优秀的团队合作精神,经过2周的时间,成功地完成了这一题目。 |
| 45 | | |
| 46 | | [[BR]] |
| 47 | | 测试代码如下: |
| 48 | | {{{ |
| 49 | | package lunch; |
| 50 | | |
| 51 | | import java.util.HashMap; |
| 52 | | import java.util.LinkedList; |
| 53 | | import java.util.List; |
| 54 | | import java.util.Map; |
| 55 | | import org.junit.After; |
| 56 | | import org.junit.AfterClass; |
| 57 | | import org.junit.Assert; |
| 58 | | import org.junit.Before; |
| 59 | | import org.junit.BeforeClass; |
| 60 | | import org.junit.Test; |
| 61 | | import static org.junit.Assert.*; |
| 62 | | |
| 63 | | /** |
| 64 | | * |
| 65 | | * @author pc |
| 66 | | */ |
| 67 | | public class LunchTest { |
| 68 | | |
| 69 | | private Lunch lunch = null; |
| 70 | | private LinkedList<String> list; |
| 71 | | |
| 72 | | public LunchTest() { |
| 73 | | } |
| 74 | | |
| 75 | | @BeforeClass |
| 76 | | public static void setUpClass() { |
| 77 | | } |
| 78 | | |
| 79 | | @AfterClass |
| 80 | | public static void tearDownClass() { |
| 81 | | } |
| 82 | | |
| 83 | | @Before |
| 84 | | public void setUp() { |
| 85 | | lunch = new Lunch(); |
| 86 | | list = lunch.getPeople(); |
| 87 | | list.offer("11"); |
| 88 | | list.offer("13"); |
| 89 | | list.offer("11"); |
| 90 | | list.offer("11"); |
| 91 | | list.offer("15"); |
| 92 | | list.offer("15"); |
| 93 | | list.offer("11"); |
| 94 | | list.offer("13"); |
| 95 | | list.offer("13"); |
| 96 | | list.offer("13"); |
| 97 | | |
| 98 | | list.offer("13"); |
| 99 | | list.offer("13"); |
| 100 | | list.offer("13"); |
| 101 | | list.offer("13"); |
| 102 | | list.offer("15"); |
| 103 | | list.offer("15"); |
| 104 | | list.offer("11"); |
| 105 | | list.offer("13"); |
| 106 | | list.offer("13"); |
| 107 | | list.offer("13"); |
| 108 | | } |
| 109 | | |
| 110 | | @After |
| 111 | | public void tearDown() { |
| 112 | | } |
| 113 | | |
| 114 | | |
| 115 | | @Test |
| 116 | | public void testInit() { |
| 117 | | lunch = new Lunch(); |
| 118 | | lunch.init(); |
| 119 | | List<String> people = lunch.getPeople(); |
| 120 | | Assert.assertEquals(Lunch.TOTAL_PEOPLE, lunch.getPeople().size()); |
| 121 | | int count11 = 0; |
| 122 | | int count13 = 0; |
| 123 | | int count15 = 0; |
| 124 | | for (String s : people) { |
| 125 | | if ("11".equals(s)) { |
| 126 | | count11++; |
| 127 | | } |
| 128 | | if ("13".equals(s)) { |
| 129 | | count13++; |
| 130 | | } |
| 131 | | if ("15".equals(s)) { |
| 132 | | count15++; |
| 133 | | } |
| 134 | | } |
| 135 | | //TODO 验证首选11元的人数 |
| 136 | | Assert.assertEquals(Lunch.TOTAL_PEOPLE_11, count11); |
| 137 | | |
| 138 | | //TODO 验证首选13元的人数 |
| 139 | | Assert.assertEquals(Lunch.TOTAL_PEOPLE_13, count13); |
| 140 | | |
| 141 | | //TODO 验证首选15元的人数 |
| 142 | | Assert.assertEquals(Lunch.TOTAL_PEOPLE_15, count15); |
| 143 | | |
| 144 | | //TODO 验证随机 |
| 145 | | |
| 146 | | } |
| 147 | | |
| 148 | | @Test |
| 149 | | public void testCheckpoint() { |
| 150 | | //lunch.init(); |
| 151 | | |
| 152 | | Map<String, Integer> queue = lunch.getQueue(); |
| 153 | | queue.put("11", 0); |
| 154 | | queue.put("13", 0); |
| 155 | | queue.put("15", 0); |
| 156 | | lunch.setQueue(queue); |
| 157 | | |
| 158 | | lunch.checkpoint(); |
| 159 | | Assert.assertEquals(10, list.size()); |
| 160 | | Assert.assertEquals(1, (int) queue.get("11")); |
| 161 | | Assert.assertEquals(2, (int) queue.get("13")); |
| 162 | | Assert.assertEquals(1, (int) queue.get("15")); |
| 163 | | Assert.assertEquals(4, lunch.getPersonCount11()); |
| 164 | | Assert.assertEquals(4, lunch.getPersonCount13()); |
| 165 | | Assert.assertEquals(2, lunch.getPersonCount15()); |
| 166 | | |
| 167 | | lunch.checkpoint(); |
| 168 | | Assert.assertEquals(0, list.size()); |
| 169 | | Assert.assertEquals(0, (int) queue.get("11")); |
| 170 | | Assert.assertEquals(7, (int) queue.get("13")); |
| 171 | | Assert.assertEquals(2, (int) queue.get("15")); |
| 172 | | Assert.assertEquals(5, lunch.getPersonCount11()); |
| 173 | | Assert.assertEquals(11, lunch.getPersonCount13()); |
| 174 | | Assert.assertEquals(4, lunch.getPersonCount15()); |
| 175 | | } |
| 176 | | |
| 177 | | @Test |
| 178 | | public void testCheckPointHavePeople() { |
| 179 | | Map<String, Integer> queue = lunch.getQueue(); |
| 180 | | queue.put("11", 50); |
| 181 | | queue.put("13", 30); |
| 182 | | queue.put("15", 10); |
| 183 | | lunch.setQueue(queue); |
| 184 | | |
| 185 | | lunch.checkpoint(); |
| 186 | | Assert.assertEquals(10, list.size()); |
| 187 | | Assert.assertEquals(47, (int) queue.get("11")); |
| 188 | | Assert.assertEquals(28, (int) queue.get("13")); |
| 189 | | Assert.assertEquals(14, (int) queue.get("15")); |
| 190 | | Assert.assertEquals(0, lunch.getPersonCount11()); |
| 191 | | Assert.assertEquals(0, lunch.getPersonCount13()); |
| 192 | | Assert.assertEquals(5, lunch.getPersonCount15()); |
| 193 | | } |
| 194 | | |
| 195 | | @Test |
| 196 | | public void testGetBalance() { |
| 197 | | int balance = lunch.getPersonCount11() * Lunch.COST_ELEVEN |
| 198 | | + lunch.getPersonCount13() * Lunch.COST_THIRTEEN |
| 199 | | + lunch.getPersonCount15() * Lunch.COST_FIFTEEN; |
| 200 | | Assert.assertEquals(balance, lunch.getBalance()); |
| 201 | | } |
| 202 | | |
| 203 | | @Test |
| 204 | | public void testChoose() { |
| 205 | | |
| 206 | | Map<String, Integer> queue = new HashMap<String, Integer>(); |
| 207 | | queue.put("11", 33); |
| 208 | | queue.put("13", 0); |
| 209 | | queue.put("15", 0); |
| 210 | | |
| 211 | | |
| 212 | | String people = "11"; |
| 213 | | lunch.setQueue(queue); |
| 214 | | |
| 215 | | Assert.assertTrue(lunch.choose11(people)); |
| 216 | | |
| 217 | | queue = new HashMap<String, Integer>(); |
| 218 | | queue.put("11", 49); |
| 219 | | queue.put("13", 0); |
| 220 | | queue.put("15", 0); |
| 221 | | lunch.setQueue(queue); |
| 222 | | Assert.assertTrue(lunch.choose11(people)); |
| 223 | | |
| 224 | | queue = new HashMap<String, Integer>(); |
| 225 | | queue.put("11", 50); |
| 226 | | queue.put("13", 0); |
| 227 | | queue.put("15", 0); |
| 228 | | lunch.setQueue(queue); |
| 229 | | Assert.assertFalse(lunch.choose11(people)); |
| 230 | | |
| 231 | | people = "13"; |
| 232 | | Assert.assertFalse(lunch.choose11(people)); |
| 233 | | } |
| 234 | | |
| 235 | | @Test |
| 236 | | public void testChoose13() { |
| 237 | | Map<String, Integer> queue = new HashMap<String, Integer>(); |
| 238 | | |
| 239 | | String people = "13"; |
| 240 | | queue = new HashMap<String, Integer>(); |
| 241 | | queue.put("11", 0); |
| 242 | | queue.put("13", 30); |
| 243 | | queue.put("15", 0); |
| 244 | | lunch.setQueue(queue); |
| 245 | | Assert.assertFalse(lunch.choose13(people)); |
| 246 | | |
| 247 | | queue = new HashMap<String, Integer>(); |
| 248 | | queue.put("11", 0); |
| 249 | | queue.put("13", 29); |
| 250 | | queue.put("15", 0); |
| 251 | | lunch.setQueue(queue); |
| 252 | | Assert.assertTrue(lunch.choose13(people)); |
| 253 | | |
| 254 | | people = "15"; |
| 255 | | Assert.assertFalse(lunch.choose13(people)); |
| 256 | | |
| 257 | | } |
| 258 | | |
| 259 | | @Test |
| 260 | | public void testChoose15() { |
| 261 | | |
| 262 | | Map<String, Integer> queue = new HashMap<String, Integer>(); |
| 263 | | |
| 264 | | String people = "15"; |
| 265 | | queue = new HashMap<String, Integer>(); |
| 266 | | queue.put("11", 0); |
| 267 | | queue.put("13", 0); |
| 268 | | queue.put("15", 15); |
| 269 | | lunch.setQueue(queue); |
| 270 | | Assert.assertFalse(lunch.choose15(people)); |
| 271 | | |
| 272 | | queue = new HashMap<String, Integer>(); |
| 273 | | queue.put("11", 0); |
| 274 | | queue.put("13", 0); |
| 275 | | queue.put("15", 14); |
| 276 | | lunch.setQueue(queue); |
| 277 | | Assert.assertTrue(lunch.choose15(people)); |
| 278 | | } |
| 279 | | |
| 280 | | @Test |
| 281 | | public void testHandlePieceOfLunch(){ |
| 282 | | Map<String, Integer> queue = lunch.getQueue(); |
| 283 | | queue.put("11", 30); |
| 284 | | queue.put("13", 20); |
| 285 | | queue.put("15", 10); |
| 286 | | lunch.setQueue(queue); |
| 287 | | |
| 288 | | lunch.handlePieceOfLunch(); |
| 289 | | Assert.assertEquals(27, (int) queue.get("11")); |
| 290 | | Assert.assertEquals(18, (int) queue.get("13")); |
| 291 | | Assert.assertEquals(9, (int) queue.get("15")); |
| 292 | | |
| 293 | | queue = lunch.getQueue(); |
| 294 | | queue.put("11", 0); |
| 295 | | queue.put("13", 0); |
| 296 | | queue.put("15", 0); |
| 297 | | lunch.setQueue(queue); |
| 298 | | lunch.handlePieceOfLunch(); |
| 299 | | Assert.assertEquals(0, (int) queue.get("11")); |
| 300 | | Assert.assertEquals(0, (int) queue.get("13")); |
| 301 | | Assert.assertEquals(0, (int) queue.get("15")); |
| 302 | | |
| 303 | | queue = lunch.getQueue(); |
| 304 | | queue.put("11", 3); |
| 305 | | queue.put("13", 2); |
| 306 | | queue.put("15", 1); |
| 307 | | lunch.setQueue(queue); |
| 308 | | lunch.handlePieceOfLunch(); |
| 309 | | Assert.assertEquals(0, (int) queue.get("11")); |
| 310 | | Assert.assertEquals(0, (int) queue.get("13")); |
| 311 | | Assert.assertEquals(0, (int) queue.get("15")); |
| 312 | | |
| 313 | | } |
| 314 | | } |
| 315 | | }}} |
| 316 | | |
| 317 | | 源代码如下: |
| 318 | | {{{ |
| 319 | | package lunch; |
| 320 | | |
| 321 | | import java.util.ArrayList; |
| 322 | | import java.util.Collections; |
| 323 | | import java.util.HashMap; |
| 324 | | import java.util.LinkedList; |
| 325 | | import java.util.List; |
| 326 | | import java.util.Map; |
| 327 | | import java.util.Queue; |
| 328 | | |
| 329 | | /** |
| 330 | | * |
| 331 | | * @author pc |
| 332 | | */ |
| 333 | | public class Lunch { |
| 334 | | |
| 335 | | public static final int WAIT_NUM_OF_11 = 50; |
| 336 | | public static final int WAIT_NUM_OF_13 = 30; |
| 337 | | public static final int WAIT_NUM_OF_15 = 15; |
| 338 | | |
| 339 | | public static final int TOTAL_PEOPLE = 500; |
| 340 | | public static final int TOTAL_PEOPLE_11 = 280; |
| 341 | | public static final int TOTAL_PEOPLE_13 = 150; |
| 342 | | public static final int TOTAL_PEOPLE_15 = 70; |
| 343 | | public static final int COST_ELEVEN = 11; |
| 344 | | public static final int COST_THIRTEEN = 13; |
| 345 | | public static final int COST_FIFTEEN = 15; |
| 346 | | |
| 347 | | public static final int NUM_OF_HANDLE_11 = 3; |
| 348 | | public static final int NUM_OF_HANDLE_13 = 2; |
| 349 | | public static final int NUM_OF_HANDLE_15 = 1; |
| 350 | | |
| 351 | | |
| 352 | | private Map<String, Integer> queue = new HashMap<String, Integer>(); |
| 353 | | private LinkedList<String> people = new LinkedList<String>(); |
| 354 | | |
| 355 | | private int personCount11 = 0; |
| 356 | | private int personCount13 = 0; |
| 357 | | private int personCount15 = 0; |
| 358 | | |
| 359 | | public Map<String, Integer> getQueue() { |
| 360 | | return queue; |
| 361 | | } |
| 362 | | |
| 363 | | public void setQueue(Map<String, Integer> queue) { |
| 364 | | this.queue = queue; |
| 365 | | } |
| 366 | | |
| 367 | | public LinkedList<String> getPeople() { |
| 368 | | return people; |
| 369 | | } |
| 370 | | |
| 371 | | public int getPersonCount11() { |
| 372 | | return personCount11; |
| 373 | | } |
| 374 | | |
| 375 | | public int getPersonCount13() { |
| 376 | | return personCount13; |
| 377 | | } |
| 378 | | |
| 379 | | public int getPersonCount15() { |
| 380 | | return personCount15; |
| 381 | | } |
| 382 | | |
| 383 | | /** |
| 384 | | * 初始化进场顺序 |
| 385 | | */ |
| 386 | | public void init() { |
| 387 | | for (int i = 0; i < TOTAL_PEOPLE_11; i++) { |
| 388 | | people.add("11"); |
| 389 | | } |
| 390 | | for (int i = 0; i < TOTAL_PEOPLE_13; i++) { |
| 391 | | people.add("13"); |
| 392 | | } |
| 393 | | for (int i = 0; i < TOTAL_PEOPLE_15; i++) { |
| 394 | | people.add("15"); |
| 395 | | } |
| 396 | | |
| 397 | | queue.put("11", 0); |
| 398 | | queue.put("13", 0); |
| 399 | | queue.put("15", 0); |
| 400 | | |
| 401 | | Collections.shuffle(people); |
| 402 | | } |
| 403 | | |
| 404 | | public int getBalance() { |
| 405 | | return COST_ELEVEN * personCount11 + COST_THIRTEEN * personCount13 |
| 406 | | + COST_FIFTEEN * personCount15; |
| 407 | | } |
| 408 | | |
| 409 | | /** |
| 410 | | * 每分钟时的处理方法 |
| 411 | | */ |
| 412 | | public void checkpoint() { |
| 413 | | for (int i = 0; i < 10; i++) { |
| 414 | | String p = people.poll(); |
| 415 | | |
| 416 | | // 判断队列人数 |
| 417 | | boolean result = choose11(p); |
| 418 | | if (result) { |
| 419 | | queue.put("11", queue.get("11") + 1); |
| 420 | | personCount11++; |
| 421 | | } else { |
| 422 | | result = choose13(p); |
| 423 | | if (result) { |
| 424 | | queue.put("13", queue.get("13") + 1); |
| 425 | | personCount13++; |
| 426 | | } else { |
| 427 | | if (choose15(p)) { |
| 428 | | queue.put("15", queue.get("15") + 1); |
| 429 | | personCount15++; |
| 430 | | } |
| 431 | | } |
| 432 | | } |
| 433 | | } |
| 434 | | |
| 435 | | handlePieceOfLunch(); |
| 436 | | } |
| 437 | | |
| 438 | | public void handlePieceOfLunch() { |
| 439 | | queue.put("11", queue.get("11") - 3 < 0 ? 0 : queue.get("11") - 3); |
| 440 | | queue.put("13", queue.get("13") - 2 < 0 ? 0 : queue.get("13") - 2); |
| 441 | | queue.put("15", queue.get("15") - 1 < 0 ? 0 : queue.get("15") - 1); |
| 442 | | } |
| 443 | | |
| 444 | | public boolean choose11(String p) { |
| 445 | | return queue.get("11") < WAIT_NUM_OF_11 && "11".equals(p); |
| 446 | | } |
| 447 | | |
| 448 | | public boolean choose13(String p) { |
| 449 | | return queue.get("13") < WAIT_NUM_OF_13 && ("11".equals(p) || "13".equals(p)); |
| 450 | | } |
| 451 | | |
| 452 | | public boolean choose15(String p) { |
| 453 | | return queue.get("15") < WAIT_NUM_OF_15; |
| 454 | | } |
| 455 | | |
| 456 | | /** |
| 457 | | * @param args the command line arguments |
| 458 | | */ |
| 459 | | public static void main(String[] args) { |
| 460 | | // TODO code application logic here |
| 461 | | int times = TOTAL_PEOPLE % 10 == 0 ? TOTAL_PEOPLE / 10 : TOTAL_PEOPLE / 10 + 1; |
| 462 | | Lunch lunch = new Lunch(); |
| 463 | | lunch.init(); |
| 464 | | for (int i = 0; i < times; i++) { |
| 465 | | lunch.checkpoint(); |
| 466 | | } |
| 467 | | int total = lunch.getBalance(); |
| 468 | | System.out.println("total:" + total); |
| 469 | | System.out.println("getPersonCount11:" + lunch.getPersonCount11()); |
| 470 | | System.out.println("getPersonCount13:" + lunch.getPersonCount13()); |
| 471 | | System.out.println("getPersonCount15:" + lunch.getPersonCount15()); |
| 472 | | } |
| 473 | | } |
| 474 | | |
| 475 | | }}} |
| 476 | | |
| 477 | | 这次Code Kata活动,总体来说,还是比较顺利,中途也出现了一些,代码设计上的分歧意见,和代码设计中发现的问题,但小组成员都虚心倾听别人意见,认真思考 |
| 478 | | 最后讨论统一编程思路,大家都受益良多。[[BR]] |
| 479 | | |
| 480 | | 比如说,开始活动之前,王安宁就发现题目本身存在一些设计不合理的地方,后来经过讨论修改,敲订题目。[[BR]] |
| 481 | | |
| 482 | | 秦鸿源在大家在陷入过度设计陷井的时候,站出来,提出分解问题,各个击破的方案,让大家思路更清晰,更有条理。[[BR]] |
| 483 | | |
| 484 | | 陈阳提出使用队列比使用数组更适合解决打饭排队问题,丁健勇与邝巨桓,在小组成编码过程中给过很多非常不错的经验与建议。[[BR]] |
| 485 | | |
| 486 | | 新入职的黄志强和李炳岳,也作为顾问全程参与了活动,虽然没有直接参与编码,但也从中学习到了不少知识。[[BR]] |
| 487 | | |
| 488 | | 活动之中还有很多精彩的细节... |
| 489 | | |
| 490 | | 欢迎其他组有兴趣的同事加入:) |