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  1. class Idiom9
  2. {
  3. 	static class BinTree<T extends Comparable<T>> {
  4.         T value;
  5.         BinTree<T> left;
  6.         BinTree<T> right;
  7.  
  8.         BinTree(T value) {
  9.             this.value = value;
  10.         }
  11.  
  12. 		@Override
  13. 		public String toString() {
  14. 			StringBuilder sb = new StringBuilder();
  15. 			sb.append("(");
  16.             sb.append(value);
  17. 			sb.append(" ");
  18.             sb.append(left==null ? "()" : left);
  19.             sb.append(right==null ? "()" : right);
  20. 			sb.append(")");
  21. 			return sb.toString();
  22. 		}
  23. 	}
  24.  
  25. 	public static void main (String[] args)
  26. 	{
  27.         BinTree<Integer> five = new BinTree<>(5);
  28.         BinTree<Integer> one = new BinTree<>(1);
  29.         BinTree<Integer> eight = new BinTree<>(8);
  30. 		BinTree<Integer> six = new BinTree<>(6);
  31.         five.left = one;
  32.         five.right = eight;
  33.         eight.left = six;
  34.  
  35.         System.out.println(five);
  36. 	}
  37. }
Success #stdin #stdout 0.04s 711168KB
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(5 (1 ()())(8 (6 ()())()))
https://ideone.com/6J4l4X
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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