human
Count pairs from two sorted arrays whose sum is equal to a given value x | function to count all pairs from both the sorted arrays whose sum is equal to a given value.
traverse ' arr1 [ ] ' from left to right traverse ' arr2 [ ] ' from right to left.
if this sum is equal to ' x ' , then increment ' l ' , decrement ' r ' and increment 'count  .
if this sum is less than x , then increment l.
else decrement 'r  .
required count of pairs.
Driver Code"
How can the above be solved in Python?
assistant
#Here is code to count pairs from two sorted arrays whose sum is equal to a given value x and the other steps required.
 def countPairs ( arr1 , arr2 , m , n , x ) :
	count , l , r = 0 , 0 , n - 1
	while ( l < m and r >= 0 ) :
		if ( ( arr1 [ l ] + arr2 [ r ] ) == x ) :
			l += 1
			r -= 1
			count += 1
		elif ( ( arr1 [ l ] + arr2 [ r ] ) < x ) :
			l += 1
		else :
			r -= 1
	return count
if __name__ == ' _ _ main _ _ ' :
	arr1 = [ 1 , 3 , 5 , 7 ]
	arr2 = [ 2 , 3 , 5 , 8 ]
	m = len ( arr1 )
	n = len ( arr2 )
	x = 10
	print ( " Count ▁ = " , countPairs ( arr1 , arr2 , m , n , x ) )