create a min heap in java using priority queue

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Alice
10 May 2019
1int arr[]={1,2,1,3,3,5,7};
2        PriorityQueue<Integer> a=new PriorityQueue<>();
3        for(int i:arr){
4            a.add(i);
5        }
6        while(!a.isEmpty())
7            System.out.println(a.poll());
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