作者
Michael A Bender, Alex Conway, Martín Farach-Colton, Hanna Komlós, Michal Koucký, William Kuszmaul, Michael Saks
发表日期
2024/5/1
期刊
arXiv preprint arXiv:2405.00807
简介
The list-labeling problem captures the basic task of storing a dynamically changing set of up to elements in sorted order in an array of size . The goal is to support insertions and deletions while moving around elements within the array as little as possible. Until recently, the best known upper bound stood at amortized cost. This bound, which was first established in 1981, was finally improved two years ago, when a randomized expected-cost algorithm was discovered. The best randomized lower bound for this problem remains , and closing this gap is considered to be a major open problem in data structures. In this paper, we present the See-Saw Algorithm, a randomized list-labeling solution that achieves a nearly optimal bound of amortized expected cost. This bound is achieved despite at least three lower bounds showing that this type of result is impossible for large classes of solutions.
学术搜索中的文章
MA Bender, A Conway, M Farach-Colton, H Komlós… - arXiv preprint arXiv:2405.00807, 2024