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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. class TreeNode {
  8.    int id;
  9.    ArrayList<TreeNode> nodes;
  10. }
  11.  
  12. /* Name of the class has to be "Main" only if the class is public. */
  13. class Ideone
  14. {
  15. 	public static void main (String[] args) throws java.lang.Exception
  16. 	{
  17. 		// your code goes here
  18. 		TreeNode a = new TreeNode();a.id = 34;
  19. 		TreeNode b = new TreeNode();b.id = 65;
  20. 		TreeNode c = new TreeNode();c.id = 37;
  21. 		TreeNode d = new TreeNode();d.id = 98;
  22. 		TreeNode e = new TreeNode();e.id = 23;
  23. 		TreeNode f = new TreeNode();f.id = 84;
  24. 		TreeNode g = new TreeNode();g.id = 76;
  25. 		TreeNode h = new TreeNode();h.id = 32;
  26. 		TreeNode i = new TreeNode();i.id = 11;
  27.  
  28. 		a.nodes = new ArrayList<TreeNode>();a.nodes.add(b);a.nodes.add(c);
  29. 		b.nodes = new ArrayList<TreeNode>();b.nodes.add(d);b.nodes.add(e);b.nodes.add(f);
  30. 		c.nodes = new ArrayList<TreeNode>();c.nodes.add(g);
  31. 		d.nodes = new ArrayList<TreeNode>();d.nodes.add(h);d.nodes.add(i);
  32.  
  33. 		ArrayList<TreeNode> ans = solve(a, 98);
  34. 		if(ans != null) {
  35. 			for(TreeNode t: ans) {
  36. 				System.out.println(t.id);	
  37. 			}
  38. 		} else {
  39. 			System.out.println("NULL");
  40. 		}
  41. 	}
  42.  
  43. 	static ArrayList<TreeNode> solve(TreeNode treeNode, int id) {
  44. 		if(treeNode == null) return null;
  45. 		if(treeNode.id == id) return treeNode.nodes;
  46. 		if(treeNode.nodes == null) return null;
  47. 		ArrayList<TreeNode> ans = null, temp = null;
  48. 		for(TreeNode t: treeNode.nodes) {
  49. 			temp = solve(t, id);
  50. 			if(temp != null) ans = temp;
  51. 		}
  52. 		return ans;
  53. 	}
  54. }
Success #stdin #stdout 0.04s 2184192KB
comments (?)
stdin 
Standard input is empty
stdout 
32
11
https://ideone.com/cMmAqD
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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