treevis
Treevis is a small utility to graph LeetCode trees. It's useful to debug visually test cases.
How to Use
$ npm install -g treevis
or
$ yarn global add treevis
then
$ treevis <array>
Example
treevis [5,4,7,3,null,2,null,-1,null,9]
will produce
5
/ \
/ \
4 7
/ /
3 2
/ /
-1 9
Disclaimer
Long trees don't always display correctly.