

'''simple docstring'''







import copy
import os

import cva
import numpy as np
from matplotlib import pyplot as plt


class    A__ :



    def __init__(   self    )  -> List[Any]:





           '''simple docstring'''
           A_		   = """"""
           A_		   = """"""
           A_		   = []
           A_		   = 0
           A_		   = 256
           A_		   = 0
           A_		   = 0
           A_		   = 0
           A_		   = 0



    def    snake_case_     (   self						,			UpperCamelCase__    )  -> int:





           '''simple docstring'''
           A_		   = cva.imread(UpperCamelCase__						,			0    )
           A_		   = copy.deepcopy(self.img    )
           A_   ,     A_   ,     A_		   = plt.hist(self.img.ravel()						,			256						,			[0, 256]						,			label="""x"""    )
           A_		   = np.sum(UpperCamelCase__    )
           for i in range(len(UpperCamelCase__    )    ):
                  A_		   = x[i] / self.k
                  self.sk += prk
                  A_		   = (self.L - 1) * self.sk
                  if self.rem != 0:
                         A_		   = int(last % last    )
                  A_		   = int(last + 1 if self.rem >= 0.5 else last    )
                  self.last_list.append(UpperCamelCase__    )
                  A_		   = int(np.ma.count(self.img    ) / self.img[1].size    )
                  A_		   = self.img[1].size
           for i in range(self.number_of_cols    ):
                  for j in range(self.number_of_rows    ):
                         A_		   = self.img[j][i]
                         if num != self.last_list[num]:
                                A_		   = self.last_list[num]
           cva.imwrite("""output_data/output.jpg"""						,			self.img    )



    def    snake_case_     (   self    )  -> List[str]:





           '''simple docstring'''
           plt.hist(self.img.ravel()						,			256						,			[0, 256]    )







    def    snake_case_     (   self    )  -> List[Any]:





           '''simple docstring'''
           cva.imshow("""Output-Image"""						,			self.img    )
           cva.imshow("""Input-Image"""						,			self.original_image    )
           cva.waitKey(5000    )
           cva.destroyAllWindows()


if __name__ == "__main__":
      __lowerCamelCase						    =      os.path.join(os.path.basename(__file__), '''image_data/input.jpg''')
      __lowerCamelCase						    =      ConstantStretch()
      stretcher.stretch(file_path)
      stretcher.plot_histogram()
      stretcher.show_image()



'''simple docstring'''







from __future__ import annotations

from typing import Any
def  UpperCAmelCase__      ( UpperCAmelCase__			)     ->     int:
       if not postfix_notation:
              return 0

       A_		   = {"""+""", """-""", """*""", """/"""}
       A_		   = []

       for token in postfix_notation:
              if token in operations:
                     A_   ,     A_		   = stack.pop(), stack.pop()
                     if token == "+":
                            stack.append(a + b			)
                     elif token == "-":
                            stack.append(a - b			)
                     elif token == "*":
                            stack.append(a * b			)
                     else:
                            if a * b < 0 and a % b != 0:
                                   stack.append(a // b + 1			)
                            else:
                                   stack.append(a // b			)
              else:
                     stack.append(int(UpperCAmelCase__			)			)

       return stack.pop()


if __name__ == "__main__":
      import doctest

      doctest.testmod()
