Data commit

Task/24-game/Nim/24-game.nim

@@ -0,0 +1,38 @@
+from random import randomize, rand
+from strutils import Whitespace
+from algorithm import sort
+from sequtils import newSeqWith
+
+randomize()
+
+var
+  problem = newSeqWith(4, rand(1..9))
+  stack: seq[float]
+  digits: seq[int]
+
+echo "Make 24 with the digits: ", problem
+
+template op(c: untyped) =
+  let a = stack.pop
+  stack.add c(stack.pop, a)
+
+for c in stdin.readLine:
+  case c
+  of '1'..'9':
+    digits.add c.ord - '0'.ord
+    stack.add float(c.ord - '0'.ord)
+  of '+': op `+`
+  of '*': op `*`
+  of '-': op `-`
+  of '/': op `/`
+  of Whitespace: discard
+  else: raise newException(ValueError, "Wrong char: " & c)
+
+sort digits
+sort problem
+if digits != problem:
+  raise newException(ValueError, "Not using the given digits.")
+if stack.len != 1:
+  raise newException(ValueError, "Wrong expression.")
+echo "Result: ", stack[0]
+echo if abs(stack[0] - 24) < 0.001: "Good job!" else: "Try again."