StrokaPodstanovka.java

public class StrokaPodstanovka {


    public static void main(String[] args) {
      
        String s = "Education is the most powerful weapon which you can use to change the world.";
        String t = "An investment in knowledge pays the best interest.";
        int use = s.indexOf("use");
        int knowledge = t.indexOf("knowledge");
        int to = s.indexOf("to");

        System.out.print(s.substring(use, use+4));
        System.out.print(t.substring(knowledge, knowledge+10));
        System.out.print(s.substring(to, s.length()));

    }
}