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Thanks...a lot....it's done.....

I have to create a Huffman Tree. I have prepared the Priority Queue. the problem is arising while creating the tree as it is generated bottom-up. Can you please give any idea about how to do that?

i am using double because probability will have a decimal part.
but when i am going to find the frequency , the decimal part should be entirely zero.
for example, the string be: aaaabbbbbbbbbbbccc...

actually the frequency should be an integer i.e,9.0000000000 and not 9.0000000006.

***Problem****In this program if the frequency is large (say, 9) the frequency shows it as 9.000000000006.

import java.io.*;

public class Freq {

public static void main(String[] args)
...