human
Give me a code to smallest alphabet greater than a given character and the other steps required given the following:
Smallest alphabet greater than a given character | Returns the smallest character from the given set of letters that is greater than K.
Take the first element as l and the rightmost element as r.
if this while condition does not satisfy simply return the first element ..
Return the smallest element.
Driver Code.
Function call"
Solution in Python:
assistant
#Here is code to smallest alphabet greater than a given character and the other steps required.
 def nextGreatestAlphabet ( alphabets , K ) :
	n = len ( alphabets )
	if ( K >= alphabets [ n - 1 ] ) :
	return alphabets [ 0 ]
	l = 0
	r = len ( alphabets ) - 1
	ans = - 1
	while ( l <= r ) :
		mid = int ( ( l + r ) / 2 )
		if ( alphabets [ mid ] > K ) :
			r = mid - 1
			ans = mid
		else :
			l = mid + 1
	if ( alphabets [ ans ] < K ) :
		return alphabets [ 0 ]
	else :
		return alphabets [ ans ]
letters = [ ' A ' , ' r ' , ' z ' ]
K = ' z '
result = nextGreatestAlphabet ( letters , K )
print ( result )