Solved

Shifting Array Element Left

Posted on 2011-03-09
5
462 Views
Last Modified: 2012-05-11
Hello All

I am trying to shift an element to the left.  I want 5050 to become 0550.

Here's my code.  I don't know what I'm doing wrong.

class TestArrays {
	public static void main(String[] args) {
		int[] ia = new int[101];
		for (int i = 0; i < ia.length; i++)
			ia[i] = i;
		int sum = 0;
		for (int i = 0; i < ia.length; i++)
			sum += ia[i];
		System.out.println(sum);
		
		sum = 0;
		System.arraycopy(ia, 1, ia, 0, ia.length-1);
		for (int i = 0; i < ia.length; i++)
			sum += ia[i];

      System.out.println(sum);
		
	}
	}

Open in new window


Can anyone show me how to shift an element left?

Thanks

RichW
0
Comment
Question by:RichW
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
5 Comments
 
LVL 47

Expert Comment

by:for_yan
ID: 35089757
Sorry how would 5050 become 0550 by shifting?
do you mean 5050 ---> 0505 ?
0
 
LVL 4

Author Comment

by:RichW
ID: 35089769
If you shift the first 0 to the left, it would be 0550, no?
0
 
LVL 47

Accepted Solution

by:
for_yan earned 500 total points
ID: 35089791
OK, so you have an array - your task is to move element at posiion j (j>0) to position j-1, and you don't care
what happens with the previous value of element j-1 - and what happens with the new element j either - correct?

Then why woould not you jsut simply say a[j-1] = a[j];

0
 
LVL 47

Expert Comment

by:for_yan
ID: 35089808
Or you want to exchange elements at position j and j-1 - that would be another task, but also simple:

int temp = a[j-1];
a[j-1]=a[j];
a[j] = temp;

0
 
LVL 35

Expert Comment

by:mccarl
ID: 35089830
So what is your requirement for shifting then? To find the first zero and shift it one place to the left? Why the zero and why only the first zero?
0

Featured Post

Free Tool: SSL Checker

Scans your site and returns information about your SSL implementation and certificate. Helpful for debugging and validating your SSL configuration.

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.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
jdbc error in jsp application 20 71
SHA2 certs for IIS AND Java? 2 122
CSV file parsing thru Java 13 39
Java basic valueOf question 1 33
Java had always been an easily readable and understandable language.  Some relatively recent changes in the language seem to be changing this pretty fast, and anyone that had not seen any Java code for the last 5 years will possibly have issues unde…
Introduction Java can be integrated with native programs using an interface called JNI(Java Native Interface). Native programs are programs which can directly run on the processor. JNI is simply a naming and calling convention so that the JVM (Java…
This video teaches viewers about errors in exception handling.
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.

756 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