normal

taschenrechner.py

@@ -1,10 +1,73 @@
-stack=()
-o1=input("Erster Operand:")
-stack.append(o1)
-o2=input("Zweiter Operand:")
-stack.append(o2)
-operator=raw_input("Operator:")
-o3=stack[0] 'operator' stack[1]
-stack.clear()
-stack.append(o3)
-print stack
+symbol_priority = {}
+symbol_priority[0] = ['#']
+symbol_priority[1] = ['(']
+symbol_priority[2] = ['+', '-']
+symbol_priority[3] = ['*', '/']
+symbol_priority[4] = [')']
+def comparePriority(symbol, RPN_stack, symbol_stack):
+  global symbol_priority
+  if len(symbol_stack) > 0:
+    symbol_pop = symbol_stack.pop()
+  else:
+    return
+  for list in symbol_priority.values():
+    if (symbol in list) and (symbol_pop in list):
+      symbol_stack.append(symbol_pop)
+      symbol_stack.append(symbol)
+      return
+    elif symbol in list:
+      RPN_stack.append(symbol_pop)
+      comparePriority(symbol, RPN_stack, symbol_stack)
+      return
+    elif symbol_pop in list:
+      symbol_stack.append(symbol_pop)
+      symbol_stack.append(symbol)
+      return
+    else:
+      continue
+    symbol_stack.append(symbol_pop)
+    return
+def scanEveryone(input_string, RPN_stack, symbol_stack):
+  for ch in input_string:
+    if ch.isdigit():
+      RPN_stack.append(ch)
+    else:
+      if len(symbol_stack) > 0:
+        if ch == '(':
+          symbol_stack.append(ch)
+        elif ch == ')':
+          while True:
+            symbol_pop = symbol_stack.pop()
+            if symbol_pop == '(':
+              break
+            else:
+              RPN_stack.append(symbol_pop)
+        else:
+          comparePriority(ch, RPN_stack, symbol_stack)
+      else:
+        symbol_stack.append(ch)
+def scanInput(RPN_stack, symbol_stack):
+  input_string = raw_input()
+  input_string += '#'
+  scanEveryone(input_string, RPN_stack, symbol_stack)
+def calRPN(RPN_stack):
+  value_stack = []
+  RPN_stack.append('#')
+  for value in RPN_stack:
+    if value == '#':
+      return value_stack.pop()
+      break
+    if value.isdigit():
+      value_stack.append(value)
+    else:
+      right_value = value_stack.pop()
+      left_value = value_stack.pop()
+      cal_string = left_value + value + right_value
+      value_stack.append(str(eval(cal_string)))
+def main():
+  RPN_stack = []
+  symbol_stack = []
+  scanInput(RPN_stack, symbol_stack)
+  print calRPN(RPN_stack)
+if __name__ == '__main__':
+  main()

tt.py

@@ -0,0 +1,74 @@
+symbol_priority = {}
+symbol_priority[0] = ['#']
+symbol_priority[1] = ['(']
+symbol_priority[2] = ['+', '-']
+symbol_priority[3] = ['*', '/']
+symbol_priority[4] = [')']
+def comparePriority(symbol, RPN_stack, symbol_stack):
+  global symbol_priority
+  if len(symbol_stack) > 0:
+    symbol_pop = symbol_stack.pop()
+  else:
+    return
+  for list in symbol_priority.values():
+    if (symbol in list) and (symbol_pop in list):
+      symbol_stack.append(symbol_pop)
+      symbol_stack.append(symbol)
+      return
+    elif symbol in list:
+      RPN_stack.append(symbol_pop)
+      #recusion call
+      comparePriority(symbol, RPN_stack, symbol_stack)
+      return
+    elif symbol_pop in list:
+      symbol_stack.append(symbol_pop)
+      symbol_stack.append(symbol)
+      return
+    else:
+      continue
+    symbol_stack.append(symbol_pop)
+    return
+def scanEveryone(input_string, RPN_stack, symbol_stack):
+  for ch in input_string:
+    if ch.isdigit():
+      RPN_stack.append(ch)
+    else:
+      if len(symbol_stack) > 0:
+        if ch == '(':
+          symbol_stack.append(ch)
+        elif ch == ')':
+          while True:
+            symbol_pop = symbol_stack.pop()
+            if symbol_pop == '(':
+              break
+            else:
+              RPN_stack.append(symbol_pop)
+        else:
+          comparePriority(ch, RPN_stack, symbol_stack)
+      else:
+        symbol_stack.append(ch)
+def scanInput(RPN_stack, symbol_stack):
+  input_string = raw_input()
+  input_string += '#'
+  scanEveryone(input_string, RPN_stack, symbol_stack)
+def calRPN(RPN_stack):
+  value_stack = []
+  RPN_stack.append('#')
+  for value in RPN_stack:
+    if value == '#':
+      return value_stack.pop()
+      break
+    if value.isdigit():
+      value_stack.append(value)
+    else:
+      right_value = value_stack.pop()
+      left_value = value_stack.pop()
+      cal_string = left_value + value + right_value
+      value_stack.append(str(eval(cal_string)))
+def main():
+  RPN_stack = []
+  symbol_stack = []
+  scanInput(RPN_stack, symbol_stack)
+  print calRPN(RPN_stack)
+if __name__ == '__main__':
+  main()