human
Give me a code to count of pairs ( x , y ) in an array such that x < y and the other steps required given the following:
Count of pairs ( x , y ) in an array such that x < y | Function to return the number of pairs ( x , y ) such that x < y.
Length of the array.
Calculate the number of valid pairs.
Return the count of valid pairs.
Driver code"
How can the above be solved in Python?
assistant
#Here is code to count of pairs ( x , y ) in an array such that x < y and the other steps required.
 def getPairs ( a ) :
	n = len ( a )
	count = ( n * ( n - 1 ) ) // 2
	return count
a = [ 2 , 4 , 3 , 1 ]
print ( getPairs ( a ) )