24 game/Solve: Difference between revisions

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@@ Line 240: / Line 240: @@
 {{trans|Tcl}}
 <lang ruby>class TwentyFourGamePlayer
-  EXPRESSIONS = [
-    'a.send(op1, b).send(op2, c).send(op3, d)', # '((a op1 b) op2 c) op3 d',
-    'a.send(op1, b.send(op2, c)).send(op3, d)', # '(a op1 (b op2 c)) op3 d',
-    'a.send(op1, b).send(op2, c.send(op3, d))', # '(a op1 b) op2 (c op3 d)',
-    'a.send(op1, b.send(op2, c).send(op3, d))', # 'a op1 ((b op2 c) op3 d)',
-    'a.send(op1, b.send(op2, c.send(op3, d)))', # 'a op1 (b op2 (c op3 d))',
-  ]
   PRINT_FORMATS = [
     '((%d %s %d) %s %d) %s %d',
@@ Line 271: / Line 264: @@
         OPERATORS.each do |op2|
           OPERATORS.each do |op3|
-            EXPRESSIONS.each_with_index do |expr, i|
+            PRINT_FORMATS.each do |expr|
-              if eval(expr) == @@objective
+              # change to floats so it does floating-point division
-                @solutions << PRINT_FORMATS[i] % [a, op1, b, op2, c, op3, d]
+              test = expr.gsub('%d', '%f') % [a, op1, b, op2, c, op3, d]
+              if eval(test) == @@objective
+                @solutions << expr % [a, op1, b, op2, c, op3, d]
               end
             end