Method compare

Gfg/Java/Huffman Encoding.java:27–33

(Node n1,Node n2)

		        PriorityQueue<Node> queue=new PriorityQueue<>(new Comparator<Node>()
				{
				@Override
				public int compare(Node n1,Node n2)
				{
				    if(n1.freq==n2.freq)
				    return 1;
					return n1.freq-n2.freq;
				}
				}
		);
		for(int i=0;i<str.length();i++)