`# Estimate mean computing time for guessing a random number between 0 and 1E6. # Copyright (C) 2013 Lars Fink # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. # # Author: Lars Fink # Version: “2013-10-23″ library(microbenchmark) numberguess.dac <- function() { lower_bound <- 1 upper_bound <- 1000000 wanted_number <- sample(lower_bound:upper_bound, size=1)} i<-0 a<-500000 b<-250000 while a!=wanted_number { i=i+1 if a<wanted_number{a<-a-b} else {a<-a+b} b<-b/2} print “iterationnumber:”,i numberguess.stupid <- function() { lower_bound <- 1 upper_bound <- 1000000 wanted_number <- sample(lower_bound:upper_bound, size=1)} d<-0 i<-0 while d!=wanted_number { d=d+1,i=i+1} print “iterationnumber:”,i microbenchmark(numberguess.dac(), times=100) microbenchmark(numberguess.stupid(), times=100)`

## One thought on “MEG-DM L08”

### Leave a Reply

You must be logged in to post a comment.

Your functions end to early. They must include the actual guessing. Beside that, the if-statements need some more brackets, i.e. () around the condition.

We sort it out tomorrow.

Cheers, TN