MS. HASH

Jul 24, 2014

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MS. HASH. 2 ND GRADE. door. My desk. Behavior chart. Students desk. Reading circle. Cubbies.

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MS. HASH

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MS. HASH 2ND GRADE
door My desk Behavior chart Students desk Reading circle Cubbies

Hash Tables

Hash Tables. Group Members: Syed Husnain Bukhari SP10-BSCS-92 Ahmad Inam SP10-BSCS-06 M.Umair Sharif SP10-BSCS-38. Description. A hash table is a data structure that stores things and allows insertions, lookups, and deletions to be performed in O(1) time.

484 views • 23 slides

Hash table

Hash table. A basic problem. We have to store some records and perform the following: add new record delete record search a record by key Find a way to do these efficiently!. Array as table. studid. name. score. 0012345. andy. 81.5. 0033333. betty. 90. 0056789. david. 56.8. .

517 views • 32 slides

Hash functions

Hash functions. Outline. In this talk, we will discuss Define hash values and hash functions Finding 32-bit hash values using: Predetermined hash values Auto-incremented hash values Address-based hash values Arithmetic hash values Example: strings. Definitions. 9.2.

677 views • 33 slides

Hash Tables

Hash Tables. ADT Data Dictionary, with two operations Insert an item, Search for (and retrieve) an item How should we implement a data dictionary? Maintain a sorted array; use binary search Use sophisticated trees (later in curriculum) Use an array as a “hash table”.

246 views • 6 slides

Hash Functions

Hash Functions . A hash function takes data of arbitrary size and returns a value in a fixed range. If you compute the hash of the same data at different times, you should get the same answer – if not then the data has been modified. Properties of a hash function.

261 views • 9 slides

Hash Tables

Hash Tables. Hash tables. Definition: A data structure that uses a hash function to map keys into index of an array element. k1. k5. k2. k3. k4. Some properties of hash table. Size of hash table (Example will be shown.)

544 views • 12 slides

Hash Table

Hash Table. Introduction. Dictionary : a dynamic set that supports INSERT, SEARCH, and DELETE Hash table : an effective data structure for dictionaries O(n) time for search in worst case O(1) expected time for search. Direct-Address Tables. An Array is an example of a direct-address table

571 views • 34 slides

Hash Function

Hash Function. Contents. Hash Functions Dedicated Hash Functions Useful for lightweight authentication in RFID system Message Authentication Codes CBC-MAC Nested MAC Collusion Search Attacks. Hash function. {0,1} d. Compress a binary string with an arbitrary

610 views • 35 slides

Hash Functions

Hash Functions. Hash Functions. A hash function h takes as input a message of arbitrary length and produces as output a message digest of fixed length. …. 0. 1. 1. 0. 1. 0. 0. 1. …. Long Message. Hash Function. 1. 1. …. 1. 0. 160-Bit Message Digest. Hash Functions.

522 views • 24 slides

Hash Tables

Hash Tables. How well do hash tables support dynamic set operations? Implementations Direct address Hash functions Collision resolution methods Universal hash functions Detailed analysis of hashing methods. Hash Tables and Dynamic Sets. Dynamic set operations and hash tables Search(S,k)

400 views • 15 slides

Hash Functions

Hash Functions. Cryptographic Hash Function. Crypto hash function h(x) must provide Compression  output length is small Efficiency  h(x) easy to compute for any x One-way  given a value y it is infeasible to find an x such that h(x) = y

637 views • 42 slides

Hash Tables

Hash Tables. 0. . 1. 025-612-0001. 2. 981-101-0002. 3. . 4. 451-229-0004. Maps and the Map ADT. Mathematically, a Map is a set of ordered pairs whose elements are known as the key and the value Keys are required to be unique, but values are not necessarily unique

484 views • 28 slides

Hash

Hash. Discrete Mathematics and Its Applications Baojian Hua bjhua@ustc.edu.cn. Searching. A dictionary-like data structure contains a collection of tuple data: <k1, v1>, <k2, v2>, … keys are comparable and pair-wise distinct supports these operations: new () insert (dict, k, v)

529 views • 35 slides

Hashing - Hash Maps and Hash Functions

Hashing - Hash Maps and Hash Functions. is a means used to order and access elements in a list quickly -- the goal is O(1) time -- by using a function of the key value to identify its location in the list. The function of the key value is called a hash function. FOR EXAMPLE.

226 views • 20 slides

Hash Tables

Hash Tables. Chapter 12 discusses several ways of storing information in an array, and later searching for the information. Hash tables are a common approach to the storing/searching problem. Data Structures and Other Objects Using C++. Serial Search.

361 views • 32 slides

Marijuana|Malana Hash Cream|Moroccan Caramello Hash|Bubble Hash 17075639458

We are providing the best health care products with marijuana, Malana Hash Cream, Moroccan Caramello Hash, Kootenay Bubble Hash, Afghan Mazar Sharif hash. Email:info@bestmarijuanaweedsupplier.com

60 views • 3 slides

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