/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		String re = "-0+\\.(0)+\\b|\\.0+\\b|\\b0+(?=\\.\\d*[1-9])"; 
		String str = "2.0,3.00,-4.0,0.00,-0.00,0.03,2.01,0.001,-0.03,101,0.001,-0.03";
		String expected = "2,3,-4,0,0,.03,2.01,.001,-.03,101,.001,-.03"; 
		System.out.println(str.replaceAll(re, "$1").equals(expected)); // TRUE
	}
}

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