That is simpler, but slower. Not nearly as slow as using unbuffered io though. Timings on my machine, reading 1e6 integers chosen randomly from the range [0,1e18):
Original code https://play.golang.org/p/grB-muK7hw 5.626974435s 155.367779ms Original poster's optimized code https://play.golang.org/p/1Aoxwwv-zo 168.638597ms 150.923225ms Michael's simpler code https://play.golang.org/p/tMyipz6sYU 954.543351ms 166.710399ms So this is about 6 times slower. My guess is this is due to the use of reflection in fmt.Fscanf. But that is just a guess; I don't really have any evidence to back it up. On Wed, Aug 30, 2017 at 1:33 PM, Michael Jones <michael.jo...@gmail.com> wrote: > This can be much simpler... > https://play.golang.org/p/tMyipz6sYU > > On Wed, Aug 30, 2017 at 7:55 AM, Nilsocket <nilsoc...@gmail.com> wrote: > >> >> Can you provide example code for how you read the input? >>> >> >> Both of them were given same input size is:1000000, (i.e., 1 million) >> >> https://play.golang.org/p/grB-muK7hw >> // Time taken to read input : 9.840256889s >> // Time taken to sort: 731.469604ms >> >> I have implemented the same using bufio: >> >> https://play.golang.org/p/1Aoxwwv-zo >> // Time taken to read input : 377.038152ms >> // Time taken to sort: 688.20638ms >> >> -- >> You received this message because you are subscribed to the Google Groups >> "golang-nuts" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to golang-nuts+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Michael T. Jones > michael.jo...@gmail.com > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
