N-ary Generic Tree -- Java Interview -


Please forgive me if this question has already been asked. I recently took an interview for a job after completing a code evaluation that was based on the use of N-Arya tree and amp; Two traversal methods

As most examples of this site, I have used generics to define my tree / node data type so that I can apply strict use of any type of data type , Which I declare with tree type. Okay, to reduce a long story, my results were fine but the interviewer asked me why I used generics for my tree data structure, because I told them it is because of any kind of use in my evaluation The best way to implement the data type of the tree was. I also told them that I have created a similar data structure before, and recalled how it implemented it.

Is my first question far?

:

The code using generics has many advantages over non-normal code Is:

  • Check on strong compile time. A Java compiler applies normal code to a strong type of probe and issues errors if code violates security of type, fixing runtime errors, it is easy to fix compile-time errors, which are difficult to find It is possible.
  • Elimination of cast.

    Generic without requiring the following code snippet: 

      list list = new arrelist (); list.add ("hello"); String s = (string) list.get (0);   
     The code does not require casting when rewritten to use generics:  
      list & lt; String & gt; List = New Arrestist & lt; String & gt; (); List.add ("hello"); String s = list.get (0); // No cast   
       
    •  Enabling programmers to apply normal algorithms Using generic, programmers can apply generic algorithms that work on different types of archives , They can be customized, and those types are safe and easy to read.   
       Now, you can compare your answer with one of the best answers (if not best).

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