human
Count new pairs of strings that can be obtained by swapping first characters of pairs of strings from given array | Function to count new pairs of strings that can be obtained by swapping first characters of any pair of strings.
Stores the count of pairs.
Generate all possible pairs of strings from the array arr [ ].
Stores the current pair of strings.
Swap the first characters.
Check if they are already present in the array or not.
If both the strings are not present.
Increment the ans by 1.
Print the resultant count.
Driver Code"
Solution in Python:
 Give me a code to count new pairs of strings that can be obtained by swapping first characters of pairs of strings from given array and the other steps required?
assistant
#Here is code to count new pairs of strings that can be obtained by swapping first characters of pairs of strings from given array and the other steps required.
 def countStringPairs ( a , n ) :
	ans = 0
	for i in range ( n ) :
		for j in range ( i + 1 , n , 1 ) :
			p = a [ i ]
			q = a [ j ]
			if ( p [ 0 ] != q [ 0 ] ) :
				p = list ( p )
				q = list ( q )
				temp = p [ 0 ]
				p [ 0 ] = q [ 0 ]
				q [ 0 ] = temp
				p = ' ' . join ( p )
				q = ' ' . join ( q )
				flag1 = 0
				flag2 = 0
				for k in range ( n ) :
					if ( a [ k ] == p ) :
						flag1 = 1
					if ( a [ k ] == q ) :
						flag2 = 1
				if ( flag1 == 0 and flag2 == 0 ) :
					ans = ans + 1
	print ( ans )
if __name__ == ' _ _ main _ _ ' :
	arr = [ " good " , " bad " , " food " ]
	N = len ( arr )
	countStringPairs ( arr , N )