Abstract
We investigate the structure of the currencies (systems of coins) for which the greedy change-making algorithm always finds an optimal solution (that is, a one with minimum number of coins). We present a series of necessary conditions that must be satisfied by the values of coins in such systems. We also uncover some relations between such currencies and their sub-currencies. ?? 2009 Elsevier Ltd. All rights reserved.
Originalsprog | Engelsk |
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Tidsskrift | European Journal of Combinatorics |
Vol/bind | 31 |
Udgave nummer | 1 |
Sider (fra-til) | 47-63 |
Antal sider | 17 |
ISSN | 0195-6698 |
DOI | |
Status | Udgivet - 2010 |
Udgivet eksternt | Ja |