[](https://pypi.python.org/pypi/tryalgo/)
[](https://pypi.python.org/pypi/tryalgo/)
[](https://codecov.io/gh/jilljenn/tryalgo/)
# Algorithmic Problem Solving
Algorithms and data structures for preparing programming competitions (e.g. ICPC, [see more](https://tryalgo.org/contests/)) and coding interviews.
By Christoph Dürr and Jill-Jênn Vie.
[Our book](https://tryalgo.org/book) is available in French, English, Simplified and Traditional Chinese.
## Install
pip install tryalgo
## Documentation
- [Documentation](http://jilljenn.github.io/tryalgo/) of tryalgo 1.4
- [Blog tryalgo.org](http://tryalgo.org) in French and English
## Demo: [TryAlgo in Paris](http://nbviewer.jupyter.org/github/jilljenn/tryalgo/blob/master/examples/TryAlgo%20Maps%20in%20Paris.ipynb)
Shortest paths on the graph of Paris.
To run it yourself:
pip install -r examples/requirements.txt
jupyter notebook # Then go to examples folder
<a href="http://nbviewer.jupyter.org/github/jilljenn/tryalgo/blob/master/examples/TryAlgo%20Maps%20in%20Paris.ipynb"><img src="http://tryalgo.org/static/paris.png" /></a>
## Usage
**Dynamic programming** some example with coin change:
```python
from tryalgo import coin_change
print(coin_change([3, 5, 11], 29)) # True because 29 = 6 x 3 + 0 x 5 + 1 x 11
```
***Des chiffres et des lettres*** (that inspired *Countdown*)
```python
from tryalgo.arithm_expr_target import arithm_expr_target
arithm_expr_target([25, 50, 75, 100, 3, 6], 952)
```
Returns `'((((75*3)*(100+6))-50)/25)=952'`.
## Tests
All algorithms are thoroughly tested. These tests can be used to [practice your programming skills](https://tryalgo.org/en/miscellaneous/2019/08/10/how-to-practice-algorithms-with-tryalgo/)!
```python
python -m unittest
```
Most snippets from the book are within 76 columns (French version) or 75 columns (English version).
Our code is checked. Using optional requirements, you can check it too:
pip install pycodestyle pylint
make pycodestyle # PEP8
make pylint
## Found a bug?
Please [drop an issue](https://github.com/jilljenn/tryalgo/issues).
## Authors
© 2016–2023, Christoph Dürr and Jill-Jênn Vie (vie@jill-jenn.net).
Released under the MIT License.
## Contributors
Thanks!
- Louis Abraham
- Lilian Besson
- Xavier Carcelle
- Stéphane Henriot
- Ryan Lahfa
- Olivier Marty
- Samuel Tardieu
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