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  1. import math
  2.  
  3. def RPN_calc(list_calc_exp):
  4.  
  5.     operators = {'+': lambda b,a: a+b,
  6.                  '-': lambda b,a: a-b,
  7.                  '*': lambda b,a: a*b,
  8.                  '/': lambda b,a: a/b,
  9.                  '//': lambda b,a: a//b,
  10.                  '%': lambda b,a: a%b,
  11.                  '^': lambda b,a: a**b,
  12.                  '!': lambda x: math.factorial(x)}
  13.  
  14.  
  15.     for ind, char in enumerate(list_calc_exp):
  16.         if char == '!':
  17.             list_calc_exp[ind-1] = operators[char](float(list_calc_exp[ind-1]))
  18.             del list_calc_exp[ind]
  19.             return list_calc_exp
  20.         elif char in operators:
  21.             list_calc_exp[ind-2] = operators[char](float(list_calc_exp[ind-1]), float(list_calc_exp[ind-2]))
  22.             del list_calc_exp[ind]
  23.             del list_calc_exp[ind-1]
  24.             return list_calc_exp
  25.  
  26. def output_res(text):
  27.  
  28.     result = text.split()
  29.  
  30.     while len(result) != 1:
  31.         result = RPN_calc(result)
  32.     return result[0]
  33.  
  34.  
  35. print(output_res('0.5 1 2 ! * 2 1 ^ + 10 + *'))
  36. print(output_res('1 2 3 4 ! + - / 100 *'))
  37. print(output_res('100 807 3 331 * + 2 2 1 + 2 + * 5 ^ * 23 10 558 * 10 * + + *'))
Success #stdin #stdout 0s 23304KB
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7.0
-4.0
18005582300.0
https://ideone.com/0XiSCF
language:
Python (cpython 2.7.16)
created:
7 years ago
visibility:
public

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