Maximum triplet sum in array | This function assumes that there are at least three elements in arr [ ] . ; sort the given array ; After sorting the array . Add last three element of the given array ; Driver code
< ? php function maxTripletSum ( $ arr , $ n ) { sort ( $ arr ) ; return $ arr [ $ n - 1 ] + $ arr [ $ n - 2 ] + $ arr [ $ n - 3 ] ; } $ arr = array ( 1 , 0 , 8 , 6 , 4 , 2 ) ; $ n = count ( $ arr ) ; echo maxTripletSum ( $ arr , $ n ) ; ? >