



'''simple docstring'''






from copy import deepcopy



class 							lowercase       :


 """simple docstring"""


 def __init__(							self  ,a_ = None  ,a_ = None							)		->   Any:

        if arr is None and size is not None:
               _UpperCAmelCase  :						Dict			     = size
               _UpperCAmelCase  :						List[Any]			     = [0] * size
        elif arr is not None:
               self.init(lowercase_							)
        else:
               raise ValueError("""Either arr or size must be specified"""							)







 def _snake_case (							self  ,a_							)		->   List[Any]:
        _UpperCAmelCase  :						Union[str, Any]			     = len(lowercase_							)
        _UpperCAmelCase  :						Tuple			     = deepcopy(lowercase_							)
        for i in range(1  ,self.size							):
               _UpperCAmelCase  :						Tuple			     = self.next_(lowercase_							)
               if j < self.size:
                      self.tree[j] += self.tree[i]







 def _snake_case (							self							)		->   List[str]:
        _UpperCAmelCase  :						Optional[int]			     = self.tree[:]
        for i in range(self.size - 1  ,0  ,-1							):
               _UpperCAmelCase  :						List[Any]			     = self.next_(lowercase_							)
               if j < self.size:
                      arr[j] -= arr[i]
        return arr







 @staticmethod
 def _snake_case (							a_							)		->   List[Any]:
        return index + (index & (-index))







 @staticmethod
 def _snake_case (							a_							)		->   Union[str, Any]:
        return index - (index & (-index))







 def _snake_case (							self  ,a_  ,a_							)		->   Optional[Any]:
        if index == 0:
               self.tree[0] += value
               return
        while index < self.size:
               self.tree[index] += value
               _UpperCAmelCase  :						Any			     = self.next_(lowercase_							)







 def _snake_case (							self  ,a_  ,a_							)		->   List[Any]:
        self.add(lowercase_  ,value - self.get(lowercase_							)							)







 def _snake_case (							self  ,a_							)		->   Optional[Any]:
        if right == 0:
               return 0
        _UpperCAmelCase  :						Optional[int]			     = self.tree[0]
        right -= 1  # make right inclusive
        while right > 0:
               result += self.tree[right]
               _UpperCAmelCase  :						Union[str, Any]			     = self.prev(lowercase_							)
        return result







 def _snake_case (							self  ,a_  ,a_							)		->   int:
        return self.prefix(lowercase_							) - self.prefix(lowercase_							)







 def _snake_case (							self  ,a_							)		->   Any:
        return self.query(lowercase_  ,index + 1							)







 def _snake_case (							self  ,a_							)		->   Optional[Any]:
        value -= self.tree[0]
        if value < 0:
               return -1

        _UpperCAmelCase  :						Optional[int]			     = 1  # Largest power of 2 <= size
        while j * 2 < self.size:
               j *= 2

        _UpperCAmelCase  :						Tuple			     = 0

        while j > 0:
               if i + j < self.size and self.tree[i + j] <= value:
                      value -= self.tree[i + j]
                      i += j
               j //= 2
        return i


if __name__ == "__main__":
   import doctest

   doctest.testmod()








"""simple docstring"""

import copy
import os

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




class        _UpperCAmelCase       :

 def __init__(     self		:       List[Any]				):
     snake_case_ :     List[str]				=	''''''
     snake_case_ :     Tuple				=	''''''
     snake_case_ :     int				=	[]
     snake_case_ :     Optional[int]				=	0
     snake_case_ :     Optional[Any]				=	256
     snake_case_ :     Tuple				=	0
     snake_case_ :     Tuple				=	0
     snake_case_ :     Optional[Any]				=	0
     snake_case_ :     Any				=	0

 def 						_snake_case					(     self		:       Optional[Any]  ,     lowercase_		:       List[Any]				):
     snake_case_ :     List[Any]				=	cva.imread(lowercase_  ,     0				)
     snake_case_ :     Tuple				=	copy.deepcopy(self.img				)
     snake_case_,	snake_case_,	snake_case_ :     List[Any]				=	plt.hist(self.img.ravel()  ,     256  ,     [0, 256]  ,     label='''x'''				)
     snake_case_ :     str				=	np.sum(lowercase_				)
     for i in range(len(lowercase_				)				):
         snake_case_ :     Optional[Any]				=	x[i] / self.k
         self.sk += prk
         snake_case_ :     Any				=	(self.L - 1) * self.sk
         if self.rem != 0:
             snake_case_ :     Dict				=	int(last % last				)
         snake_case_ :     Union[str, Any]				=	int(last + 1 if self.rem >= 0.5 else last				)
         self.last_list.append(lowercase_				)
         snake_case_ :     int				=	int(np.ma.count(self.img				) / self.img[1].size				)
         snake_case_ :     Tuple				=	self.img[1].size
     for i in range(self.number_of_cols				):
         for j in range(self.number_of_rows				):
             snake_case_ :     Union[str, Any]				=	self.img[j][i]
             if num != self.last_list[num]:
                 snake_case_ :     List[str]				=	self.last_list[num]
     cva.imwrite('''output_data/output.jpg'''  ,     self.img				)

 def 						_snake_case					(     self		:       Tuple				):
     plt.hist(self.img.ravel()  ,     256  ,     [0, 256]				)






 def 						_snake_case					(     self		:       int				):
     cva.imshow('''Output-Image'''  ,     self.img				)
     cva.imshow('''Input-Image'''  ,     self.original_image				)
     cva.waitKey(5000				)
     cva.destroyAllWindows()


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





