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June 24, 2012 12:50
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鍋谷さんの参考問題: Java解答
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package sample; | |
import java.util.ArrayList; | |
import java.util.List; | |
class Card { | |
char suit; | |
String rank; | |
Card() { | |
rank = null; | |
} | |
} | |
/** | |
* 問題: http://qiita.com/items/cbc3af152ee3f50a822f | |
*/ | |
public class Main { | |
protected List<Card> convertToCard(String str) { | |
List<Card> list = new ArrayList<>(); | |
for (int i = 0; i < str.length(); i++) { | |
char ch = str.charAt(i); | |
if (ch == 'S' || ch == 'H' || ch == 'D' || ch == 'C') { | |
Card card = new Card(); | |
card.suit = ch; | |
list.add(card); | |
} else { | |
Card card2 = list.remove(list.size() - 1); | |
if (card2.rank != null) { | |
String rank = card2.rank; | |
card2.rank = rank.concat(String.valueOf(ch)); | |
} else { | |
card2.rank = String.valueOf(ch); | |
} | |
list.add(card2); | |
} | |
} | |
return list; | |
} | |
protected String confirmHand(List<Card> list) { | |
String result = null; | |
List<String> ranks = new ArrayList<String>(); | |
List<String> pairs = new ArrayList<>(); | |
for (Card card : list) { | |
for (String r : ranks) { | |
if (r.equals(card.rank)) { | |
pairs.add(card.rank); | |
break; | |
} | |
} | |
ranks.add(card.rank); | |
} | |
if (pairs == null || pairs.size() == 0) { | |
result = "--"; | |
} else if (pairs.size() == 1) { | |
result = "1P"; // one pair | |
} else if (pairs.size() == 2) { | |
if (pairs.get(0).equals(pairs.get(1))) { | |
result = "3K"; // three cards | |
} else { | |
result = "2P"; // two pair | |
} | |
} else if (pairs.size() == 3) { | |
if (pairs.get(0).equals(pairs.get(1)) | |
&& pairs.get(0).equals(pairs.get(2))) { | |
result = "4K"; // four cards | |
} else { | |
result = "FH"; // full house | |
} | |
} | |
return result; | |
} | |
} |
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package sample; | |
import static org.junit.Assert.assertEquals; | |
import java.util.List; | |
import org.junit.Test; | |
public class TestMain { | |
Main main; | |
@Test | |
public void testOnePair() throws Exception { | |
main = new Main(); | |
List<Card> list0 = main.convertToCard("S8S9HJS10D8"); | |
assertEquals("1枚目と5枚目でワンペア。", "1P", main.confirmHand(list0)); | |
List<Card> list1 = main.convertToCard("S8D8HJS10CQ"); | |
assertEquals("1枚目と2枚目でワンペア。", "1P", main.confirmHand(list1)); | |
List<Card> list2 = main.convertToCard("S5C8HJD8CQ"); | |
assertEquals("2枚目と4枚目でワンペア。", "1P", main.confirmHand(list2)); | |
List<Card> list3 = main.convertToCard("S2C8H8DJCQ"); | |
assertEquals("2枚目と3枚目でワンペア。", "1P", main.confirmHand(list3)); | |
List<Card> list4 = main.convertToCard("S2C8H3D8CQ"); | |
assertEquals("2枚目と5枚目でワンペア。", "1P", main.confirmHand(list4)); | |
List<Card> list5 = main.convertToCard("S2C8H2DJCQ"); | |
assertEquals("1枚目と3枚目でワンペア。", "1P", main.confirmHand(list5)); | |
List<Card> list6 = main.convertToCard("S2C8H3D2CQ"); | |
assertEquals("1枚目と4枚目でワンペア。", "1P", main.confirmHand(list6)); | |
List<Card> list7 = main.convertToCard("S2C10H8D8CQ"); | |
assertEquals("3枚目と4枚目でワンペア。", "1P", main.confirmHand(list7)); | |
List<Card> list8 = main.convertToCard("S2C5H8DJC8"); | |
assertEquals("3枚目と5枚目でワンペア。", "1P", main.confirmHand(list8)); | |
List<Card> list9 = main.convertToCard("S2C8H4DJCJ"); | |
assertEquals("4枚目と5枚目でワンペア。", "1P", main.confirmHand(list9)); | |
} | |
@Test | |
public void testTwoPair() throws Exception { | |
main = new Main(); | |
List<Card> list0 = main.convertToCard("S8C8HJSJD2"); | |
assertEquals("1、2枚目と3、4枚目でツーペア。", "2P", main.confirmHand(list0)); | |
List<Card> list1 = main.convertToCard("S8D8HJS10CJ"); | |
assertEquals("1、2枚目と3、5枚目でツーペア。", "2P", main.confirmHand(list1)); | |
List<Card> list2 = main.convertToCard("S5CJHJD5CQ"); | |
assertEquals("2、3枚目と1、4枚目でツーペア。", "2P", main.confirmHand(list2)); | |
List<Card> list3 = main.convertToCard("S2C8H8DJC2"); | |
assertEquals("2、3枚目と1、5枚目でツーペア。", "2P", main.confirmHand(list3)); | |
List<Card> list4 = main.convertToCard("S2C2H3DQCQ"); | |
assertEquals("1、2枚目と4、5枚目でツーペア。", "2P", main.confirmHand(list4)); | |
List<Card> list5 = main.convertToCard("S2C8H8DQCQ"); | |
assertEquals("2、3枚目と4、5枚目でツーペア。", "2P", main.confirmHand(list5)); | |
List<Card> list6 = main.convertToCard("SQC8H3D3CQ"); | |
assertEquals("3、4枚目と1、5枚目でツーペア。", "2P", main.confirmHand(list6)); | |
List<Card> list7 = main.convertToCard("S2C10H2D10CQ"); | |
assertEquals("1、3枚目と2、4枚目でツーペア。", "2P", main.confirmHand(list7)); | |
List<Card> list8 = main.convertToCard("S2C5H2DJH5"); | |
assertEquals("1、3枚目と2、5枚目でツーペア。", "2P", main.confirmHand(list8)); | |
List<Card> list9 = main.convertToCard("S2C8H2DJCJ"); | |
assertEquals("1、3枚目と4、5枚目でツーペア。", "2P", main.confirmHand(list9)); | |
List<Card> list10 = main.convertToCard("S2CJH3D2CJ"); | |
assertEquals("1、4枚目と2、5枚目でツーペア。", "2P", main.confirmHand(list10)); | |
} | |
@Test | |
public void testThreeCard() throws Exception { | |
main = new Main(); | |
List<Card> list0 = main.convertToCard("S8C8H8SJD2"); | |
assertEquals("1、2、3枚目でスリーカード。", "3K", main.confirmHand(list0)); | |
List<Card> list1 = main.convertToCard("S8D8HJH8C2"); | |
assertEquals("1、2、4枚目でスリーカード。", "3K", main.confirmHand(list1)); | |
List<Card> list2 = main.convertToCard("S5C5HJD7D5"); | |
assertEquals("1、2、5枚目でスリーカード。", "3K", main.confirmHand(list2)); | |
List<Card> list3 = main.convertToCard("S2C8H2D2C9"); | |
assertEquals("1、3、4枚目でスリーカード。", "3K", main.confirmHand(list3)); | |
List<Card> list4 = main.convertToCard("S2CJH2DQC2"); | |
assertEquals("1、3、5枚目でスリーカード。", "3K", main.confirmHand(list4)); | |
List<Card> list5 = main.convertToCard("S2C8HQD2C2"); | |
assertEquals("1、4、5枚目でスリーカード。", "3K", main.confirmHand(list5)); | |
List<Card> list6 = main.convertToCard("SQC8H8D8C2"); | |
assertEquals("2、3、4枚目でスリーカード。", "3K", main.confirmHand(list6)); | |
List<Card> list7 = main.convertToCard("S2C10H10D4D10"); | |
assertEquals("2、3、5枚目でスリーカード。", "3K", main.confirmHand(list7)); | |
List<Card> list8 = main.convertToCard("S2C5HKD5H5"); | |
assertEquals("2、4、5枚目でスリーカード。", "3K", main.confirmHand(list8)); | |
List<Card> list9 = main.convertToCard("S2C8H3D3C3"); | |
assertEquals("3、4、5枚目でスリーカード。", "3K", main.confirmHand(list9)); | |
} | |
@Test | |
public void testFourCard() throws Exception { | |
main = new Main(); | |
List<Card> list0 = main.convertToCard("S8C8H8D8D2"); | |
assertEquals("1、2、3、4枚目でフォーカード。", "4K", main.confirmHand(list0)); | |
List<Card> list1 = main.convertToCard("S8D8H8HJC8"); | |
assertEquals("1、2、3、5枚目でフォーカード。", "4K", main.confirmHand(list1)); | |
List<Card> list2 = main.convertToCard("S5C5HJH5D5"); | |
assertEquals("1、2、4、5枚目でフォーカード。", "4K", main.confirmHand(list2)); | |
List<Card> list3 = main.convertToCard("S2C8H2D2C2"); | |
assertEquals("1、3、4、5枚目でフォーカード。", "4K", main.confirmHand(list3)); | |
List<Card> list4 = main.convertToCard("SKS2H2D2C2"); | |
assertEquals("2、3、4、5枚目でフォーカード。", "4K", main.confirmHand(list4)); | |
} | |
@Test | |
public void testFullHouse() throws Exception { | |
main = new Main(); | |
List<Card> list0 = main.convertToCard("S8C8HJDJCJ"); | |
assertEquals("1、2枚目でワンペア、3、4、5枚目でスリーカードのフルハウス。", "FH", | |
main.confirmHand(list0)); | |
List<Card> list1 = main.convertToCard("S8DJH8HJCJ"); | |
assertEquals("1、3枚目でワンペア、2、4、5枚目でスリーカードのフルハウス。", "FH", | |
main.confirmHand(list1)); | |
List<Card> list2 = main.convertToCard("S5C2H2H5D2"); | |
assertEquals("1、4枚目でワンペア、2、3、5枚目でスリーカードのフルハウス。", "FH", | |
main.confirmHand(list2)); | |
List<Card> list3 = main.convertToCard("S2C8H8D8C2"); | |
assertEquals("1、5枚目でワンペア、2、3、4枚目でスリーカードのフルハウス。", "FH", | |
main.confirmHand(list3)); | |
List<Card> list4 = main.convertToCard("SKS2H2DKCK"); | |
assertEquals("2、3枚目でワンペア、1、4、5枚目でスリーカードのフルハウス。", "FH", | |
main.confirmHand(list4)); | |
List<Card> list5 = main.convertToCard("SKS2HKD2CK"); | |
assertEquals("2、4枚目でワンペア、1、3、5枚目でスリーカードのフルハウス。", "FH", | |
main.confirmHand(list5)); | |
List<Card> list6 = main.convertToCard("SKS2HKDKC2"); | |
assertEquals("2、5枚目でワンペア、1、3、4枚目でスリーカードのフルハウス。", "FH", | |
main.confirmHand(list6)); | |
List<Card> list7 = main.convertToCard("SKDKH2D2CK"); | |
assertEquals("3、4枚目でワンペア、1、2、5枚目でスリーカードのフルハウス。", "FH", | |
main.confirmHand(list7)); | |
List<Card> list8 = main.convertToCard("C8S8H2D8C2"); | |
assertEquals("3、5枚目でワンペア、1、2、4枚目でスリーカードのフルハウス。", "FH", | |
main.confirmHand(list8)); | |
List<Card> list9 = main.convertToCard("SKCKHKD2C2"); | |
assertEquals("4、5枚目でワンペア、1、2、3枚目でスリーカードのフルハウス。", "FH", | |
main.confirmHand(list9)); | |
} | |
@Test | |
public void testOther() throws Exception { | |
main = new Main(); | |
List<Card> list0 = main.convertToCard("S1C2H3D4C5"); | |
assertEquals("すべて別のランク。", "--", main.confirmHand(list0)); | |
List<Card> list1 = main.convertToCard("S8S7S6S5S4"); | |
assertEquals("同じSuiteだが、すべて別のランク。", "--", main.confirmHand(list1)); | |
} | |
} |
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