Find the Biggest number in HashSet/HashMap java

Question

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 1

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.

Answer 2

try

    int max = Collections.max(set);
    int maxKey = Collections.max(map.keySet());
    int maxValue Collections.max(map.values());