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Alexander Nikiforov
Java Web Development Techdegree Graduate 22,175 PointsMake sure you check answer of other students.
In order to do that please click on Type Casting
in the top of this page in the line
Java -> Java Data Structures -> Getting There -> Type Casting
If you do that you'll get to page with questions of students that already asked, and got their answers.
Here is direct link just in case
https://teamtreehouse.com/community/code-challenge:7592
Since you haven't provided any code, check answers there, should help :)