combination_lock, a MATLAB code which simulates the process of determining the combination of a lock.

This program demonstrates the method of exhaustive search, that is, it searches for an answer by trying every possibility. This requires a way of logically ordering the possibilities.


combination_lock ( m, n, c )


The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.


combination_lock is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version.

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  1. Donald Kreher, Douglas Simpson,
    Combinatorial Algorithms,
    CRC Press, 1998,
    ISBN: 0-8493-3988-X,
    LC: QA164.K73.
  2. Silvano Martello, Paolo Toth,
    Knapsack Problems: Algorithms and Computer Implementations,
    Wiley, 1990,
    ISBN: 0-471-92420-2,
    LC: QA267.7.M37.

Source Code:

Last modified on 20 December 2018.