Title
Searching for a counterfeit coin with b-balance
Abstract
We consider the classical problem of searching for a heavier coin in a set of n coins, n - 1 of which have the same weight. The weighing device is b-balance which is the generalization of two-arms balance. The minimum numbers of weighings are determined exactly for worst-case sequential algorithm, average-case sequential algorithm, worst-case predetermined algorithm, average-case predetermined algorithm.We also investigate the above search model with additional constraint: each weighing is only allowed to use the coins that are still in doubt. We present a worst-case optimal sequential algorithm and an average-case optimal sequential algorithm requiring the minimum numbers of weighings.
Year
DOI
Venue
2006
10.1016/j.dam.2006.03.010
Discrete Applied Mathematics
Keywords
Field
DocType
two-arms balance,search model,b -balance,search,average-case,minimum number,counterfeit coin,classical problem,worst-case optimal sequential algorithm,worst-case sequential algorithm,average-case sequential algorithm,additional constraint,worst-case,n coin,heavier coin
Algorithm,Counterfeit,Sequential algorithm,Group testing,Mathematics
Journal
Volume
Issue
ISSN
154
14
Discrete Applied Mathematics
Citations 
PageRank 
References 
0
0.34
9
Authors
3
Name
Order
Citations
PageRank
Wen An Liu16512.61
Huan Huan Cui200.34
Bing Qing Ma300.34