Data commit

Task/Generate-Chess960-starting-position/Java/generate-chess960-starting-position.java

@@ -0,0 +1,27 @@
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+
+public class Chess960{
+	private static List<Character> pieces = Arrays.asList('R','B','N','Q','K','N','B','R');
+
+	public static List<Character> generateFirstRank(){
+		do{
+			Collections.shuffle(pieces);
+		}while(!check(pieces.toString().replaceAll("[^\\p{Upper}]", ""))); //List.toString adds some human stuff, remove that
+		
+		return pieces;
+	}
+
+	private static boolean check(String rank){
+		if(!rank.matches(".*R.*K.*R.*")) return false;			//king between rooks
+		if(!rank.matches(".*B(..|....|......|)B.*")) return false;	//all possible ways bishops can be placed
+		return true;
+	}
+
+	public static void main(String[] args){
+		for(int i = 0; i < 10; i++){
+			System.out.println(generateFirstRank());
+		}
+	}
+}