human
What is a code to queries to count frequencies of a given character in a given range of indices and the other steps required given the following:
Queries to count frequencies of a given character in a given range of indices | Function to prcount of char y present in the range [ l , r ].
Length of the string.
Stores the precomputed results.
Iterate the given string.
Increment dp [ i ] [ y - ' a ' ] by 1.
Pre - compute.
Number of queries.
Traverse each query.
Print the result for each query.
Driver Code.
Given string.
Given Queries.
Function Call"
How can the above be solved in Python?
assistant
#Here is code to queries to count frequencies of a given character in a given range of indices and the other steps required.
 def noOfChars ( s , queries ) :
	n = len ( s )
	dp = [ [ 0 for i in range ( 26 ) ] for i in range ( n + 1 ) ]
	for i in range ( n ) :
		dp [ i + 1 ] [ ord ( s [ i ] ) - ord ( ' a ' ) ] += 1
		for j in range ( 26 ) :
			dp [ i + 1 ] [ j ] += dp [ i ] [ j ]
	q = len ( queries )
	for i in range ( q ) :
		l = queries [ i ] [ 0 ]
		r = queries [ i ] [ 1 ]
		c = ord ( queries [ i ] [ 2 ] ) - ord ( ' a ' )
		print ( dp [ r ] - dp [ l - 1 ] , end = " ▁ " )
if __name__ == ' _ _ main _ _ ' :
	S = " aabv "
	queries = [ [ 1 , 2 , ' a ' ] , [ 2 , 3 , ' b ' ] ]
	noOfChars ( S , queries )