


"""simple docstring"""






import copy
import os

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




class 							A_      :


  def __init__(			self:						Union[str, Any]    ):







     '''simple docstring'''







     _lowerCamelCase   :				Optional[int]							=     ""
     _lowerCamelCase   :				int							=     ""
     _lowerCamelCase   :				Optional[Any]							=     []
     _lowerCamelCase   :				Any							=     0
     _lowerCamelCase   :				List[Any]							=     256
     _lowerCamelCase   :				Union[str, Any]							=     0
     _lowerCamelCase   :				int							=     0
     _lowerCamelCase   :				List[str]							=     0
     _lowerCamelCase   :				List[str]							=     0


  def 							_lowercase					(			self:						int							,__lowerCAmelCase:						List[str]    ):







     '''simple docstring'''







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


  def 							_lowercase					(			self:						Union[str, Any]    ):







     '''simple docstring'''







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






  def 							_lowercase					(			self:						Tuple    ):







     '''simple docstring'''







     cva.imshow("Output-Image"							,self.img    )
     cva.imshow("Input-Image"							,self.original_image    )
     cva.waitKey(5_000    )
     cva.destroyAllWindows()


if __name__ == "__main__":
  _lowerCAmelCase							:    List[str]					   =	os.path.join(os.path.basename(__file__), '''image_data/input.jpg''')
  _lowerCAmelCase							:    Tuple					   =	ConstantStretch()
  stretcher.stretch(file_path)
  stretcher.plot_histogram()
  stretcher.show_image()



def 	_UpperCamelCase					(    lowerCAmelCase_ )    ->Any:
   UpperCAmelCase      					=  0
   UpperCAmelCase      					=  len(lowerCAmelCase_ )

   for i in range(n - 1 ):
      for j in range(i + 1	,    lowerCAmelCase_ ):
         if arr[i] > arr[j]:
            num_inversions += 1

   return num_inversions
def 	_UpperCamelCase					(    lowerCAmelCase_ )    ->Any:
   if len(lowerCAmelCase_ ) <= 1:
      return arr, 0
   UpperCAmelCase      					=  len(lowerCAmelCase_ ) // 2
   UpperCAmelCase      					=  arr[0:mid]
   UpperCAmelCase      					=  arr[mid:]

   UpperCAmelCase					,	UpperCAmelCase      					=  count_inversions_recursive(lowerCAmelCase_ )
   UpperCAmelCase					,	UpperCAmelCase      					=  count_inversions_recursive(lowerCAmelCase_ )
   UpperCAmelCase					,	UpperCAmelCase      					=  _count_cross_inversions(lowerCAmelCase_	,    lowerCAmelCase_ )

   UpperCAmelCase      					=  inversion_p + inversions_q + cross_inversions
   return c, num_inversions
def 	_UpperCamelCase					(    lowerCAmelCase_	,    lowerCAmelCase_ )    ->int:
   UpperCAmelCase      					=  []
   UpperCAmelCase      					=  UpperCAmelCase      					=  UpperCAmelCase      					=  0
   while i < len(lowerCAmelCase_ ) and j < len(lowerCAmelCase_ ):
      if p[i] > q[j]:
         # if P[1] > Q[j], then P[k] > Q[k] for all  i < k <= len(P)
         # These are all inversions. The claim emerges from the
         # property that P is sorted.
         num_inversion += len(lowerCAmelCase_ ) - i
         r.append(q[j] )
         j += 1
      else:
         r.append(p[i] )
         i += 1

   if i < len(lowerCAmelCase_ ):
      r.extend(p[i:] )
   else:
      r.extend(q[j:] )

   return r, num_inversion
def 	_UpperCamelCase					(    )    ->int:
   UpperCAmelCase      					=  [1_0, 2, 1, 5, 5, 2, 1_1]

   # this arr has 8 inversions:
   # (10, 2), (10, 1), (10, 5), (10, 5), (10, 2), (2, 1), (5, 2), (5, 2)

   UpperCAmelCase      					=  count_inversions_bf(lowerCAmelCase_ )
   UpperCAmelCase					,	UpperCAmelCase      					=  count_inversions_recursive(lowerCAmelCase_ )

   assert num_inversions_bf == num_inversions_recursive == 8

   print("""number of inversions = """	,    lowerCAmelCase_ )

   # testing an array with zero inversion (a sorted arr_1)

   arr_a.sort()
   UpperCAmelCase      					=  count_inversions_bf(lowerCAmelCase_ )
   UpperCAmelCase					,	UpperCAmelCase      					=  count_inversions_recursive(lowerCAmelCase_ )

   assert num_inversions_bf == num_inversions_recursive == 0
   print("""number of inversions = """	,    lowerCAmelCase_ )

   # an empty list should also have zero inversions
   UpperCAmelCase      					=  []
   UpperCAmelCase      					=  count_inversions_bf(lowerCAmelCase_ )
   UpperCAmelCase					,	UpperCAmelCase      					=  count_inversions_recursive(lowerCAmelCase_ )

   assert num_inversions_bf == num_inversions_recursive == 0
   print("""number of inversions = """	,    lowerCAmelCase_ )


if __name__ == "__main__":
 main()



