CTCI/TreeNode.java at master · eharvey328/CTCI · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
public class TreeNode {
    public int data;
    public TreeNode left;
    public TreeNode right;
    public TreeNode parent;

    public TreeNode() {
        data = 0;
        left = null;
        right = null;
        parent = null;
    }

    public TreeNode(int d) {
        data = d;
        left = null;
        right = null;
        parent = null;
    }

    public void insert(int value) {
        TreeNode newNode = new TreeNode(value);

        if (value < this.data) {
            if (left == null) {
                newNode.parent = this;
                left = newNode;
            } else left.insert(value);
        } else if (value > this.data) {
            if (right == null) {
                newNode.parent = this;
                right = newNode;
            } else right.insert(value);
        }
    }
}