language: Java (sun-jdk-1.7.0_10)
date: 609 days 0 hours ago
link:
visibility: public 
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import java.util.*;
import java.lang.*;
 
class Main
{
        public static void main (String[] args) throws java.lang.Exception
        {
                String old = "This ball isn?t yours, this one is John?s?";
                String fixed = old.replaceAll("\\?([ts])", "'$1");
                System.out.println(fixed);
        }
}