Lecture Notes Selected Topics in Data Structures (ausgeww Ahlte Kapitel Aus Datenstrukturen) 3 Range Trees and the Post-ooce Problem 33 3.1 from the Exact L 1 -problem to the Approximate L 4 Mantaining Order in a List 57

Preface This text contains the lecture notes for the course Ausgeww ahlte Kapitel aus Datenstruk-turen, which was given by the author at the Universitt at des Saarlandes during the winter semester 1993/94. The course was intended for 3rd/4th year students having some basic knowledge in the eld of algorithm design. The course was accompanied by Ubungen. The Ubungsaufgaben are given in Chapter 5. The author thanks Stefan Denne for typing the manuscript and for producing the gures. i ii Contents 1 Skip Lists: a randomized dictionary 1 1.1 Skip Lists