human
Nearest smaller character to a character K from a Sorted Array | Function to return the nearest smaller character.
Stores the nearest smaller character.
Iterate till starts cross end.
Find the mid element.
Check if K is found.
Check if current character is less than K.
Increment the start.
Otherwise.
Increment end.
Return the character.
Driver code"
How can the above be solved in Python?

What is a code to nearest smaller character to a character K from a Sorted Array and the other steps required?
assistant
#Here is code to nearest smaller character to a character K from a Sorted Array and the other steps required.
 def bs ( a , n , ele ) :
	start = 0
	end = n - 1
	ch = ' @ '
	while ( start <= end ) :
		mid = start + ( end - start ) // 2 ;
		if ( ar [ mid ] == ele ) :
			end = mid - 1
		elif ( ar [ mid ] < ele ) :
			ch = ar [ mid ]
			start = mid + 1 ;
		else :
			end = mid - 1 ;
	return ch
if __name__ == ' _ _ main _ _ ' :
	ar = [ ' e ' , ' g ' , ' t ' , ' y ' ]
	n = len ( ar )
	K = ' u ' ;
	ch = bs ( ar , n , K ) ;
	if ( ch == ' @ ' ) :
		print ( ' - 1' )
	else :
		print ( ch )