Find the Biggest number in HashSet/HashMap java

java hashmap hashset
user2064467 picture user2064467 · Feb 12, 2013 · Viewed 55.5k times · Source

I would like to find the biggest number in HashSet and HashMap. Say I have the number [22,6763,32,42,33] in my HashSet and I want to find the largest number in my current HashSet..how would i do this? and Same thing for the HashMap as well. I hope you can help me with it. Thank you.

Answer

Rohit Jain picture Rohit Jain · Feb 12, 2013

You can use Collections.max(Collection) to find the maximum element out of any collection. Similarly, for a HashMap, you can use the same method on its keySet() or values(), depending upon whether you want maximum key, or maximum value.

Also, if you want as such, you can use a TreeSet and TreeMap instead, that stores the elements in sorted key order.

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