@Override
public boolean equals(Object obj) {
if (this == obj) return true;
if (obj == null) return false;
if (getClass() != obj.getClass()) return false;
BinarySearchNode other = (BinarySearchNode) obj;
if (left == null) {
if (other.left != null) return false;
} else if (!left.equals(other.left)) return false;
if (right == null) {
if (other.right != null) return false;
} else if (!right.equals(other.right)) return false;
if (value == null) {
if (other.value != null) return false;
} else if (!value.equals(other.value)) return false;
return true;
}
