PPT-Hash Tables and Sets

Lecture 3 Sets A set is simply a collection of elements Unlike lists elements are not ordered Very abstract general concept with broad usefulness The set of all Google search queries from the past 24 hours. Spencer Dawson. Summary. What are rainbow tables?. A time and memory tradeoff in password cracking.. A piecewise approach to one-way hashes. What are the advantages/disadvantages. Best uses. Limitations. Mark Russinovich Technical Fellow. Microsoft Azure. Nathan Ide Principal Dev Lead. Microsoft Windows. Pass-the-Hash == Single-Sign On. Pass-the-hash is the use of a saved credential or authenticator . What to look for to be safe. . InfoGram 6-13: February 7, 2013. Hash Oil Explosions Increasing Across U.S.. Some explosions in residences and hotels around the country are being traced back to a process using butane to extract and concentrate compounds from marijuana. The extraction method appears to be more common on the west coast; reported . Motivating Applications. Large collection of datasets. Datasets are dynamic (insert, delete). Goal: efficient searching/insertion/deletion. Hashing is ONLY applicable for exact-match searching. Direct Address Tables. Comp 550. Dictionary . Dictionary:. Dynamic-set data structure for . storing items indexed using . keys. .. Supports . operations: Insert, Search, and . Delete . (. take . O. (1) time. ). .. Applications:. Linear Probing. Uri Zwick. Tel Aviv University. Hashing with open addressing. “Uniform probing”. Insert key . in the first free position among.  . (Sometimes) assumed to be a . permutation. To search, follow the same order. (the Page Table). Idan Yaniv. , . Dan . Tsafrir. SIGMETRICS / IFIP 2016. “ Virtual . memory was . invented. in . a time of . scarcity.. Is . it still a good idea. ? ”. Charles Thacker,. ACM . Turing Award Lecture, . By – . Debanjan. . Sadhya. (iwc2011013). Mayank. . Swarnkar. (iwc2011026). Contents. Introduction. Definition. Properties of SHA. SHA Functions. SHA Constants. Preprocessing in SHA. Hashing in SHA. Limit Sets - groups monitoring & reporting requirements for each Permitted Feature. Limit Sets typically apply during particular operating conditions such as:. Summer vs Winter. High production volume vs low production volume. Hash Tables. . . 0. 1. 2. 3. 4. 451-229-0004. 981-101-0002. 025-612-0001. © 2014 Goodrich, Tamassia, Godlwasser. Presentation for use with the textbook . Data Structures and Algorithms in Java, 6. . Outline. Discuss what a hash method does. translates a string key into an integer . Discuss a few strategies for implementing a hash table. linear probing. quadratic probing. separate chaining hashing. Uri Zwick. Tel Aviv University. Started: . April . 2015. Last update: . January 12, 2017. Hashing with open addressing. “Uniform probing”. Insert key . in the first free position among.  . (Sometimes) assumed to be a . Instructor: Lilian de Greef Quarter: Summer 2017 CSE 373: Data Structures and Algorithms Lecture 6: Finishing Amortized Analysis; Dictionaries ADT; Introduction to Hash Tables Today: Finish up Amortized Analysis A common approach is to use a . Distributed Hash Table. (DHT). to organize . nodes. Traditional . hash functions convert a key to a hash value, which can be used as an index into a hash table.. Keys are unique.