Solved

Run Length Compression

Posted on 2009-04-02
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Last Modified: 2013-11-23
I have this for homework and I cannot figure out what I need to change to add spaces in between the output. I have tried everything I can think of can someone offer some help.
I included part of the code below.
Thanks

I am trying to set my output to
5 A, 1 B, 12 C, 3 D, 20 E

I currently get
5A1B12C3D20E
public static void main(String[] args) {
             RunLengthCompression RLC = new RunLengthCompression();
             String letter = "AAAAABCCCCCCCCCCCCDDDEEEEEEEEEEEEEEEEEEEE";
             System.out.printf(RLC.encode(letter));

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Question by:navyretired
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7 Comments
 
LVL 92

Expert Comment

by:objects
ID: 24055023
can u post your encode() method

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Author Comment

by:navyretired
ID: 24055057
Here it is. I did not post it before because I have someone using it in our class. I found my exact question and code from another assignment posted on another board from (I Think) someone in my class.
 public String encode(String source) {
        StringBuffer dest = new StringBuffer();
        for (int i = 0; i < source.length(); i++) {
            int runLength = 1;
            while( i+1 < source.length() && source.charAt(i) == source.charAt(i+1) ) {
                runLength++;
                i++;

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LVL 92

Expert Comment

by:objects
ID: 24055082
thats not all of it, need to see the code to help you put spaces in the required spots :)
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Author Comment

by:navyretired
ID: 24055110

public class RunLengthCompression {
 
    public String encode(String source) {
        StringBuffer dest = new StringBuffer();
        for (int i = 0; i < source.length(); i++) {
            int runLength = 1;
            while( i+1 < source.length() && source.charAt(i) == source.charAt(i+1) ) {
                runLength++;
                i++;
            }
            dest.append(runLength);
            dest.append(source.charAt(i));
        }
          
        return dest.toString();
    }
     public static void main(String[] args) {
             RunLengthCompression RLC = new RunLengthCompression();
             String letter = "AAAAABCCCCCCCCCCCCDDDEEEEEEEEEEEEEEEEEEEE";
             System.out.println(RLC.encode(letter));
             System.out.println();
           
    }
}

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LVL 92

Accepted Solution

by:
objects earned 250 total points
ID: 24055122
           dest.append(runLength);
            dest.append(' ');
            dest.append(source.charAt(i));
            dest.append(' ');

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Author Closing Comment

by:navyretired
ID: 31566022
Worked like a charm thanks
0
 

Author Comment

by:navyretired
ID: 24055318
Is there anyway to edit or delete this question?
0

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