text: Count ways of choosing a pair with maximum difference | Python Code to find no . of Ways of choosing a pair with maximum difference ; To find minimum and maximum of the array ; to find the count of minimum and maximum elements ; Count variables ; condition for all elements equal ; Driver code
code: def countPairs ( a , n ) : NEW_LINE INDENT mn = + 2147483647 NEW_LINE mx = - 2147483648 NEW_LINE for i in range ( n ) : NEW_LINE INDENT mn = min ( mn , a [ i ] ) NEW_LINE mx = max ( mx , a [ i ] ) NEW_LINE DEDENT c1 = 0 NEW_LINE c2 = 0 NEW_LINE for i in range ( n ) : NEW_LINE INDENT if ( a [ i ] == mn ) : NEW_LINE INDENT c1 += 1 NEW_LINE DEDENT if ( a [ i ] == mx ) : NEW_LINE INDENT c2 += 1 NEW_LINE DEDENT DEDENT if ( mn == mx ) : NEW_LINE INDENT return n * ( n - 1 ) // 2 NEW_LINE DEDENT else : NEW_LINE INDENT return c1 * c2 NEW_LINE DEDENT DEDENT a = [ 3 , 2 , 1 , 1 , 3 ] NEW_LINE n = len ( a ) NEW_LINE print ( countPairs ( a , n ) ) NEW_LINE