So, i don't really undestand why on [0] the right node of level two has a key but on [1] it doesn't. [0]: https://trailofbits.files.wordpress.com/2019/08/post_

So, i don't really undestand why on [0] the right node of level two has a key but on [1] it doesn't. [0]: https://trailofbits.files.wordpress.com/2019/08/post_remove_tree.png https://trailofbits.files.wordpress.com/2019/08/post_remove_... [1]: https://trailofbits.files.wordpress.com/2019/08/image1-1.png https://trailofbits.files.wordpress.com/2019/08/image1-1.png