Solved

Is there a way to cycle through array positions based on flags?

Posted on 2002-04-02
6
204 Views
Last Modified: 2010-03-31
I'm printing comments from an array and the input constantly varies. I'm cycling through an array, printing comments but in this case there are about 8 different conditions. In some conditions some comments should be left out (based on already flags I set).
Does java allow you to jump positions in an array (inside a loop) based on conditions?

Here's a crude example of what I need to happen.

String comment[] new String[14]
  comment[1]="AAAAA";
  comment[2]="BBBBB";
  comment[3]="CCCCC";
  comment[4]="DDDDD";
  ...
  comment[14]="NNNNN";

if (condition 1 == some number) {
  //print comments [1],[3],[7]
}else if (condition 1 == other number) {
  //print comments [1]...[5],[8],etc.
}

The comment positions are just examples. I just want to know how (if possible) to achieve this type of condition based cycling through the array.
0
Comment
Question by:webratss
6 Comments
 
LVL 18

Accepted Solution

by:
bobbit31 earned 100 total points
ID: 6913454
if i understand you correctly, then yes:

if (condition 1 == some number) {
   System.out.println(comments[1] + " " comments[3] + " " comments[7]);
}else if (condition 1 == other number) {
   System.out.println(comments[1] + " " comments[5] + " " + etc...);
}


0
 

Expert Comment

by:rashidkamranbs
ID: 6913585
Well webratss you are confused if random access ot array is allowed.. there is no doubt you can .. access any element at any time.. just inex should be with in the range of an array size..

this way.. you can print any string from ur Array.. no matter whats ur previous index were or whats ur next message would be..

0
 

Expert Comment

by:0xDEADBEEF
ID: 6915281
Hmmm... I would try something like this:

String comment[] = { "AAAA", "BBBB", "CCCC", /*...*/ "NNNN" };
int indices[];

switch(condition){
  case some_number:
    indices = new int[] {1, 3, 7};
    break;
  case other_number:
    indices = new int[] {1, 2, 3, 4, 5, 8};
    break; //and so on. don't forget
  default:
    indices = new int {}; //so in case nothing applies, nothing will be printed.
}

for(int i = 0; i < indices.length; i++){
  System.out.println(comment[indices[i]]);
}

This is easier to maintain, afaic. Hope this helps.
0
Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 2

Expert Comment

by:triso
ID: 6932211

Also a note for webratsass,

array indices go from 0 to n-1 so your example should be:

String comment[] new String[14]
 comment[0]="AAAAA";
 comment[1]="BBBBB";
 comment[2]="CCCCC";
 comment[3]="DDDDD";
 ...
 comment[13]="NNNNN";


Hope this helps.
0
 
LVL 9

Expert Comment

by:Venci75
ID: 7932544
No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:
Answered by: bobbit31
Please leave any comments here within the next seven days.
 
PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER!
 
Venci75
EE Cleanup Volunteer
0
 

Expert Comment

by:SpideyMod
ID: 7984159
per recommendation

SpideyMod
Community Support Moderator @Experts Exchange
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
hibernate example for saving data 19 72
Is there a simpler dropbox system? 10 44
Java basic valueOf question 1 32
Coding for the first time 9 62
By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
Introduction This article is the last of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers our test design approach and then goes through a simple test case example, how …
This tutorial covers a practical example of lazy loading technique and early loading technique in a Singleton Design Pattern.
This tutorial explains how to use the VisualVM tool for the Java platform application. This video goes into detail on the Threads, Sampler, and Profiler tabs.

679 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question