ALGORITHMICA Volume 22, Number 4, December 1998 Editor-in-Chief: C. K. Wong Special Issue: Average-Case Analsysis of Algorithms Guest Editors: Helmut Prodinger and Wojtek Szpankowski Dedicated to Philippe Flajolet on the occasion of his 50th birthday Contents: 363-365 H. Prodinger, W. Szpankowski Preface 366-387 H. Prodinger, W. Szpankowski Philippe Flajolet's Research in Analysis of Algorithms and Combinatorics 388-412 D. Aldous A Metropolis-Type Optimization Algorithm on the Infinite Tree 413-447 F. T. Bruss, M. Drmota, G. Louchard The Complete Solution of the Competitive Rank Selection Problem 448-476 E. G. Coffman, Jr., L. Flatto, P. Jelenkovi\'c, B. Poonen Packing Random Intervals On-Line 477-482 L. Devroye, E. P. Mücke, Binhai Zhu A Note on Point Location in Delaunay Triangulations of Random Points 483-489 W. Fernandez de la Vega, A. M. Frieze, M. Santha Average-Case Analysis of the Merging Algorithm of Hwang and Lin 490-515 P. Flajolet, P. Poblete, A. Viola On the Analysis of Linear Probing Hashing 516-528 M. Hofri, P. Jacquet Saddle Points in Random Matrices: Analysis of Knuth Search Algorithms 529-546 H. -K. Hwang Asymptotics of Divide-and-Conquer Recurrences: Batcher's Sorting Algorithm and a Minimum Euclidean Matching Heuristic 547-560 C. Knessl A Note on the Asymptotic Behavior of the Depth of Tries 561-568 D. E. Knuth Linear Probing and Graphs 569-584 H. M. Mahmoud, R. T. Smythe Probabilistic Analysis of MULTIPLE QUICK SELECT 585-599 D. Merlini, R. Sprugnoli, M. C. Verri Average-Case Analysis for a Simple Compression Algorithm 600-630 A. Panholzer, H. Prodinger Average-Case Analysis of Priority Trees: A Structure for Priority Queue Administration 631-649 M. R\'egnier, W. Szpankowski On Pattern Frequency Occurrences in a Markovian Sequence 650-659 H. Shachnai, M. Hofri The List Update Problem: Improved Bounds for the Counter Scheme 660-685 B. Vall\'ee Dynamics of the Binary Euclidean Algorithm: Functional Analysis and Operators