Thiscollectionofpuzzlesandexerciseswithsolutionsinkeyareasofstringalgorithmsandcombinatoricsonwordsoffersgraduatestudentsandresearchersapleasantanddirectwaytolearnandpracticewithadvancedconcepts.Copiousfiguresilluminateclassicandnewproblemstoteaseoutdeeperunderstandingofalgorithmsonstrings.