BinarySearch toString

Question

I want to make a toString just like in the TreeSet. For example my toString will print something like this:

Student{name='student1', dateOfBirth=2003-04-01, details='none'}, Student{name='student2', dateOfBirth=1999-05-11, details='none'}, 

But i want something like that:

[Student{name='student1', dateOfBirth=2003-04-01, details='none'}, Student{name='student2', dateOfBirth=1999-05-11, details='none'}]

My code:

 public String toString() {
        StringBuffer string = new StringBuffer();
        inorderPrint(root, string);
        return string.toString();
    }

    private void inorderPrint(Node root, StringBuffer stringBuffer) {

        if (root != null) {
            inorderPrint(root.left, stringBuffer);
            stringBuffer.append(root.value.toString() +  ", ");
            inorderPrint(root.right, stringBuffer);
        }
    }

Answer 1

For adding extra characters like [ , ] you can use additional condition within inOrder traverse.

Sample code:

public String toString()
{
    StringBuffer string = new StringBuffer();
    string.append('[');
    inorderPrint(root, string);
    string.append(']');
    return string.toString();
}

private void inorderPrint(Node root, StringBuffer stringBuffer)
{
    if (root != null)
    {
        inorderPrint(root.left, stringBuffer);
        stringBuffer.append(", ");
        stringBuffer.append(root.value.toString());
        stringBuffer.append(", ");
        inorderPrint(root.right, stringBuffer);
    }
}