human
Number of index pairs such that s [ i ] and s [ j ] are anagrams | Function to find number of pairs of integers i , j such that s [ i ] is an anagram of s [ j ] ..
To store the count of sorted strings.
Traverse all strings and store in the map.
Sort the string.
If string exists in map , increment count Else create key value pair with count = 1.
To store the number of pairs.
Traverse through the map.
Count the pairs for each string.
Return the required answer.
Driver code.
Function call"
Solution in Python:
assistant
#Here is code to number of index pairs such that s [ i ] and s [ j ] are anagrams and the other steps required.
 def anagram_pairs ( s , n ) :
	mp = dict ( )
	for i in range ( n ) :
		temp_str = " " . join ( sorted ( s [ i ] ) )
		if temp_str in mp :
			mp [ temp_str ] += 1
		else :
			mp [ temp_str ] = 1
	ans = 0
	for k in mp . values ( ) :
		ans += ( k * ( k - 1 ) ) // 2
	return ans
if __name__ == " _ _ main _ _ " :
	s = [ " aaab " , " aaba " , " baaa " , " cde " , " dec " ]
	n = len ( s )
	print ( anagram_pairs ( s , n ) )