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Java program to detect if Array contains duplicate

Quick Java Program example and to check whether a Java Array contains duplicate elements or not.There are three ways to check if array has duplicates
http://javarevisited.blogspot.com/2012/02/how-to-check-or-detect-duplicate.html

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Quick Java Program example and to check whether a Java Array contains duplicate elements or not.There are three ways to check if array has duplicates or not e.g. brute force way, using an HashSet way and using Set add method example.

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