Win a copy of Murach's MySQL this week in the JDBC and Relational Databases forum!
  • 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

How can I fix the size of randomly generated numbers ?

 
Ranch Hand
Posts: 60
IBM DB2 Eclipse IDE Fedora
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi,
I am randomly generating numbers using java.util.Random . But, I can not keep the length of the numbers fixed. Can you help me please ?

Here's my code :



 
Bartender
Posts: 11497
19
Android Google Web Toolkit Mac Eclipse IDE Ubuntu Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
By length of number, I take it you mean the number of digits in the number.

Suppose you want only 3 digit numbers. The lowest would be 100 and highest would be 999
In pseudo code
1) Generate nextInt(1000)
2) Check if num >99. If yes, accept it, else reject it
3) Repeat
 
Marshal
Posts: 79010
375
  • Likes 4
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
. . . or myRandom.nextInt(900) + 100
 
Maneesh Godbole
Bartender
Posts: 11497
19
Android Google Web Toolkit Mac Eclipse IDE Ubuntu Java
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Campbell's solution is more elegant.
Now why didn't I think of it?
 
Shounak Kundu
Ranch Hand
Posts: 60
IBM DB2 Eclipse IDE Fedora
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
thank you guys...... it has been solved...
 
Campbell Ritchie
Marshal
Posts: 79010
375
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
You're welcome
 
reply
    Bookmark Topic Watch Topic
  • New Topic