Created
January 31, 2011 19:34
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public class Element implements Comparable<Element>{ | |
String val; | |
int count; | |
String code = null; | |
Element leftChild; | |
Element rightChild; | |
public Element(String v, int c){ | |
this.val = v; | |
this.count = c; | |
this.leftChild = null; | |
this.rightChild = null; | |
} | |
public Element(Element l, Element r){ | |
this.leftChild = l; | |
this.rightChild = r; | |
this.count = l.getCount() + r.getCount(); | |
this.val = null; | |
} | |
public int getCount(){ return this.count; } | |
public void propogate(String code){ | |
this.code = code; | |
if(leftChild != null) | |
leftChild.propogate(code+"0"); | |
if(rightChild != null) | |
rightChild.propogate(code+"1"); | |
} | |
@Override | |
public int compareTo(Element e){ | |
if(this.getCount() > e.getCount()) | |
return 1; | |
else if(this.getCount() == e.getCount()) | |
return 0; | |
else | |
return -1; | |
} | |
@Override | |
public String toString(){ | |
return "Value = "+val+" Frequency = "+count+" Code = "+code; | |
} | |
} |
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import java.util.*; | |
public class Main { | |
public static void main(String[] args) { | |
int size = 7; | |
Element[] list = new Element[size]; | |
ArrayList<Element> arr = new ArrayList<Element>(); | |
for(int i=0 ; i<size ; ++i){ | |
list[i] = new Element((i+1)+"", size-i); | |
arr.add(list[i]); | |
} | |
while(arr.size() > 1){ | |
Collections.sort(arr); | |
Element temp1 = arr.remove(0); | |
Element temp2 = arr.remove(0); | |
arr.add(new Element(temp1, temp2)); | |
} | |
Element temp = arr.get(0); | |
temp.propogate(""); | |
for(int i=0 ; i<list.length ; ++i){ | |
System.out.println(list[i]); | |
} | |
System.out.println("##.. End of Processing.. "); | |
} | |
} |
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Value = 1 Frequency = 7 Code = 10 | |
Value = 2 Frequency = 6 Code = 00 | |
Value = 3 Frequency = 5 Code = 111 | |
Value = 4 Frequency = 4 Code = 110 | |
Value = 5 Frequency = 3 Code = 010 | |
Value = 6 Frequency = 2 Code = 0111 | |
Value = 7 Frequency = 1 Code = 0110 | |
##.. End of Processing.. |
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