• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

Rounding

 
Ranch Hand
Posts: 296
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
OK, I thought this would be an easy question, but I got it wrong:
What is the value of the following expression:
Math.round(Math.random() + 2.50001);
Answer: 3
Isn't it possible the value of Math.random() could be 0.99999 ?
If it was then the value of the expression would be 3.5 which would be rounded to 4, no?
Thanks,
Drew
 
Sheriff
Posts: 17652
300
Mac Android IntelliJ IDE Eclipse IDE Spring Debian Java Ubuntu Linux
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Drew, if this is coming from the RHE mock exam, the answer given is wrong. You are right about round() and random(), so the correct answer to that question would be "impossible to say"
 
Drew Lane
Ranch Hand
Posts: 296
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
THANK YOU!
 
Consider Paul's rocket mass heater.
reply
    Bookmark Topic Watch Topic
  • New Topic