Someone
public text v1 · immutablepostorder: 8674235
5
/ \
3 7
/ \ / \
2 4 6 8
5
/
3
/ \
2 4
\
7
/ \
6 8postorder: 8674235
5
/ \
3 7
/ \ / \
2 4 6 8
5
/
3
/ \
2 4
\
7
/ \
6 8