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cs.DS2026
Text Indexing: From Reporting to Counting
Ben Bals, Panagiotis Charalampopoulos, Oded Lachish +2
We prove an elementary yet powerful combinatorial lemma: in any rooted tree with leaves, the number of nodes whose depth is smaller than the number of their leaf descendants is…
cs.DS2026
Faster Algorithms for Shortest Unique or Absent Substrings
Panagiotis Charalampopoulos, Manal Mohamed, Solon P. Pissis +2
We revisit two well-known algorithmic problems on strings: computing a shortest unique substring (SUS) and a shortest absent substring (SAS) of a string of length . Both pro…