Data commit

Task/Generate-random-chess-position/Ruby/generate-random-chess-position.rb

@@ -0,0 +1,55 @@
+def hasNK( board, a, b )
+    for g in -1 .. 1
+        for f in -1 .. 1
+            aa = a + f; bb = b + g
+            if aa.between?( 0, 7 ) && bb.between?( 0, 7 )
+                p = board[aa + 8 * bb]
+                if p == "K" || p == "k"; return true; end
+            end
+        end
+    end
+    return false
+end
+def generateBoard(  board, pieces  )
+    while( pieces.length > 1 )
+        p = pieces[pieces.length - 1]
+        pieces = pieces[0...-1]
+        while( true )
+            a = rand( 8 ); b = rand( 8 )
+            if ( ( b == 0 || b == 7 ) && ( p == "P" || p == "p" ) ) ||
+               ( ( p == "k" || p == "K" ) && hasNK( board, a, b ) ); next; end
+            if board[a + b * 8] == nil; break;end
+        end
+        board[a + b * 8] = p
+    end
+end
+pieces = "ppppppppkqrrbbnnPPPPPPPPKQRRBBNN"
+for i in 0 .. 10
+    e = pieces.length - 1
+    while e > 0
+        p = rand( e ); t = pieces[e];
+        pieces[e] = pieces[p]; pieces[p] = t; e -= 1
+    end
+end
+board = Array.new( 64 ); generateBoard( board, pieces )
+puts
+e = 0
+for j in 0 .. 7
+    for i in 0 .. 7
+        if board[i + 8 * j] == nil; e += 1
+        else
+            if e > 0; print( e ); e = 0; end
+            print( board[i + 8 * j] )
+        end
+    end
+    if e > 0; print( e ); e = 0; end
+    if j < 7; print( "/" ); end
+end
+print( " w - - 0 1\n" )
+for j in 0 .. 7
+    for i in 0 .. 7
+        if board[i + j * 8] == nil; print( "." )
+        else print( board[i + j * 8] ); end
+    end
+    puts
+end