Software

Software that may help you understand algorithms.

GNU Scientific Library (C, C++)
- Vectors and Matrices, Random Numbers, Linear Algebra, Simulated Annealing, Minimization, ...
GNU Multiple Precision Arithmetic Library, GMP (C, C++)
NTL, a Library for doing Number Theory (C++)
LP_SOLVE (C)
GNU Octave
MATLAB
Mathematica (interfaces C, C++, Fortran, Perl, Visual Basic, PLT Scheme)