issue #30 A Chessboard Game java w/ Explanation

sowon-dev · sowon-dev · commit 167165aa25ff · 2021-03-24T23:53:26.000+09:00
diff --git a/src/hackerrank/AChessboardGame.java b/src/hackerrank/AChessboardGame.java
@@ -1,20 +1,51 @@
 package hackerrank;
 
 public class AChessboardGame {
+// https://www.hackerrank.com/challenges/a-chessboard-game-1/forum/comments/290655
+  static String chessboardGame(int t, int x, int y) {
+    // &#52404;&#49828;&#44172;&#51076;&#51012; &#54616;&#45716; &#54540;&#47112;&#51060;&#50612; 2&#47749; &#51473;&#51032; &#49849;&#51088;&#47484; &#47532;&#53556;&#54616;&#45716; &#47928;&#51228;
+    // &#50500;&#47000; 4&#44032;&#51648; &#44508;&#52825;&#51004;&#47196;&#47564; &#51060;&#46041;&#51060; &#44032;&#45733;&#54616;&#44256; &#45908;&#51060;&#49345; &#51060;&#46041;&#54624; &#49688; &#50630;&#45716; &#54540;&#47112;&#51060;&#50612;&#44032; &#51648;&#44172;&#46108;&#45796;.
+    // 1. (x-2, y+1)
+    // 2. (x-2, y-1)
+    // 3. (x+1, y-2)
+    // 4. (x-1, y-2)
+/* 15X15&#52404;&#49828;&#54032;&#50640;&#49436; &#54540;&#47112;&#51060;&#50612;1&#51060; &#51060;&#44600; &#49688; &#51080;&#45716; &#52856;&#44284; &#54540;&#47112;&#51060;&#50612;2&#44032; &#51060;&#44600; &#49688; &#51080;&#45716; &#52856;&#51012; &#51089;&#49457;&#54616;&#47732; &#50500;&#47000;&#50752; &#44057;&#45796;.
+*
+2211 2211 2211 221
+2211 2211 2211 221
+1111 1111 1111 111
+1111 1111 1111 111
 
-  static String chessboardGame(int x, int y) {
-    for (int i = 0; i < 2; i++) {
-      if (((x - 1) / 2) % 2 == 0 && ((y - 1) / 2) % 2 == 0) {
+2211 2211 2211 221
+2211 2211 2211 221
+1111 1111 1111 111
+1111 1111 1111 111
+
+2211 2211 2211 221
+2211 2211 2211 221
+1111 1111 1111 111
+1111 1111 1111 111
+
+2211 2211 2211 221
+2211 2211 2211 221
+1111 1111 1111 111
+* */
+
+    for(int i=0; i<t; i++){
+      if ((x % 4 == 1 || x % 4 == 2) && (y % 4 == 1 || y % 4 == 2)) {
         return "Second";
       }
     }
-      return "First";
+    return "First";
   }
 
   public static void main(String[] args) {
-    System.out.println(chessboardGame(5, 2) + ", ans: Second");
-    System.out.println(chessboardGame(5, 3) + ", ans: First");
-    System.out.println(chessboardGame(8, 8) + ", ans: First");
+    System.out.println(chessboardGame(3,5, 2) + ", ans: Second"); //3 1  3 3
+    System.out.println(chessboardGame(3,5, 3) + ", ans: First");
+    System.out.println(chessboardGame(3,8, 8) + ", ans: First");
+    System.out.println(chessboardGame(3,7, 3) + ", ans: First");
+    System.out.println(chessboardGame(3,8, 12) + ", ans: First");
+    System.out.println(chessboardGame(3,9, 7) + ", ans: First");
   }
 
 }
