This book constitutes the thoroughly refereedpost-workshop proceedings for the 26 International
Workshop on combinatorialAlgorithms IWOCA 2015 held in Verona Italy in October 2015. The 29
revised full papers presented were carefullyreviewed and selected from a total of 90
submissions. The topics of the papersinclude algorithms and data structures (including
sequential parallel distributed approximation probabilistic randomised and on-line
algorithms) algorithms on strings and graphs applications (bioinformatics music analysis
networking and others) combinatorics on words combinatorial enumeration combinatorial
optimization complexity theory computational biology compression and information retrieval
cryptography and information security decompositions and combinatorial designs discrete and
computational geometry graph drawing and labeling graph theory.
