Solved

Basic Array Functions

Posted on 2006-11-20
6
186 Views
Last Modified: 2010-03-31
Hi,

I would like to know how to get the value of the position of the array..

E.g.
arr[i][j]

How would I get the value of the "i" and the "j" into a variable (two seperate ones)?

Note I don't want to know what the [i][j] have been assigned, but rather than the actual numerical value of "i" and "j"...

Thanks
0
Comment
Question by:vrameen
6 Comments
 
LVL 86

Accepted Solution

by:
CEHJ earned 500 total points
ID: 17979101
>>How would I get the value of the "i" and the "j" into a variable (two seperate ones)?

i is an array
j is a variable

int[] row = arr[i];
int n = arr[i][j];
0
 

Author Comment

by:vrameen
ID: 17979217
I don't really understand..

To clarify my question...

arr[i][j] is a 2d array...

Say the array is now at arr[3][12] and arr[3][12] = "hello";
I want to get the number "3" and the number "12" into two separate variables..
I'm not interested in getting the string "hello", but rather the array numbers into the variable.

0
 
LVL 16

Expert Comment

by:Peter Kwan
ID: 17979238
vrameen,

Are you wanting the upperbound that the 2d array is filled in?
0
Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 
LVL 86

Expert Comment

by:CEHJ
ID: 17979590
>>but rather the array numbers into the variable.

But they're already in variables i and j ..?

You can of course copy them

int x = i;
int y = j;
0
 
LVL 23

Expert Comment

by:Ajay-Singh
ID: 17980531
If you are looking for the position where the array value is "hello", you can search for it

int x = -1;
int y = -1;

for(int i=0; i<arr.length; i++) {
    for(int j=0; i<arr[i].length; j++) {
        if("hello".equals(arr[i][j])) {
            x = i;
            y = j;
            break;
        }
    }
}


0
 
LVL 86

Expert Comment

by:CEHJ
ID: 18037612
:-)
0

Featured Post

Networking for the Cloud Era

Join Microsoft and Riverbed for a discussion and demonstration of enhancements to SteelConnect:
-One-click orchestration and cloud connectivity in Azure environments
-Tight integration of SD-WAN and WAN optimization capabilities
-Scalability and resiliency equal to a data center

Question has a verified solution.

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

Java Flight Recorder and Java Mission Control together create a complete tool chain to continuously collect low level and detailed runtime information enabling after-the-fact incident analysis. Java Flight Recorder is a profiling and event collectio…
Introduction This article is the second of three articles that explain why and how the Experts Exchange QA Team does test automation for our web site. This article covers the basic installation and configuration of the test automation tools used by…
Viewers learn about the “for” loop and how it works in Java. By comparing it to the while loop learned before, viewers can make the transition easily. You will learn about the formatting of the for loop as we write a program that prints even numbers…
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.

808 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