text: Middle of three using minimum comparisons | Function to find the middle of three number ; x is positive if a is greater than b . x is negative if b is greater than a . ; Similar to x ; Similar to x and y . ; Checking if b is middle ( x and y both are positive ) ; Checking if c is middle ( x and z both are positive ) ; Driver Code
code: < ? php function middleOfThree ( $ a , $ b , $ c ) { $ x = $ a - $ b ; $ y = $ b - $ c ; $ z = $ a - $ c ; if ( $ x * $ y > 0 ) return $ b ; else if ( $ x * $ z > 0 ) return $ c ; else return $ a ; } $ a = 20 ; $ b = 30 ; $ c = 40 ; echo middleOfThree ( $ a , $ b , $ c ) ; ? >