subset_sum_backtrack, a Python code which uses backtracking to seek solutions of the subset sum problem, in which it is desired to find a subset of integers which has a given sum.
The information on this web page is distributed under the MIT license.
subset_sum_backtrack is available in a C version and a C++ version and a Fortran90 version and a MATLAB version and an Octave version and a Python version.
python_combinatorics, a Python code which considers a variety of problems in combinatorics involving counting, combinations, permutations, and so on.