add some doctests to algos in backtracking#11911
Open
mozart-maia wants to merge 2 commits intoTheAlgorithms:masterfrom
Open
add some doctests to algos in backtracking#11911mozart-maia wants to merge 2 commits intoTheAlgorithms:masterfrom
mozart-maia wants to merge 2 commits intoTheAlgorithms:masterfrom
![pre-commit-ci[bot]](https://avatars.githubusercontent.com/in/68672?v=4&size=32){kind=avatar}