Implementations in different languages of an algorithm to generate nonnegative integer matrices with prescribed row and column sums. These are also known as contingency tables.
The file nonneg_int_matrices.py contains an example/test.
$ cd python
$ python nonneg_int_matrices.py
[[0, 3], [0, 1], [5, 0]]
[[0, 3], [1, 0], [4, 1]]
[[1, 2], [0, 1], [4, 1]]
[[1, 2], [1, 0], [3, 2]]
[[2, 1], [0, 1], [3, 2]]
[[2, 1], [1, 0], [2, 3]]
[[3, 0], [0, 1], [2, 3]]
[[3, 0], [1, 0], [1, 4]]Install numpy if it is not already installed:
$ pip install numpyThe file nonneg_int_matrices.py contains an example/test.
$ cd numpy
$ python nonneg_int_matrices.py
[[0 3]
[0 1]
[5 0]]
[[0 3]
[1 0]
[4 1]]
[[1 2]
[0 1]
[4 1]]
[[1 2]
[1 0]
[3 2]]
[[2 1]
[0 1]
[3 2]]
[[2 1]
[1 0]
[2 3]]
[[3 0]
[0 1]
[2 3]]
[[3 0]
[1 0]
[1 4]]Install cython if it is not already installed:
$ pip install cythonThe file nonneg_int_matrices.py contains an example/test.
$ cd cython
$ make
$ python nonneg_int_matrices.py
[[0, 3], [0, 1], [5, 0]]
[[0, 3], [1, 0], [4, 1]]
[[1, 2], [0, 1], [4, 1]]
[[1, 2], [1, 0], [3, 2]]
[[2, 1], [0, 1], [3, 2]]
[[2, 1], [1, 0], [2, 3]]
[[3, 0], [0, 1], [2, 3]]
[[3, 0], [1, 0], [1, 4]]Install cython and numpy if not already installed:
$ pip install cython
$ pip install numpyThe file nonneg_int_matrices.py contains an example/test.
$ cd cython-with-numpy
$ make
$ python nonneg_int_matrices.py
[[0 3]
[0 1]
[5 0]]
[[0 3]
[1 0]
[4 1]]
[[1 2]
[0 1]
[4 1]]
[[1 2]
[1 0]
[3 2]]
[[2 1]
[0 1]
[3 2]]
[[2 1]
[1 0]
[2 3]]
[[3 0]
[0 1]
[2 3]]
[[3 0]
[1 0]
[1 4]]