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Introduction to Hash Tables
Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Background ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
IP Addresses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
IP Addresses ,[object Object],[object Object],[object Object],[object Object],[object Object]
IP Addresses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
IP Addresses ,[object Object],[object Object],[object Object],[object Object]
IP Addresses ,[object Object],[object Object],[object Object],[object Object],[object Object]
IP Addresses ,[object Object],[object Object],[object Object],Index Address Domain Name 23240 129.97.90.200 sidicsem.uwaterloo.ca 23241 129.97.90.201 watdist8.uwaterloo.ca 23242 129.97.90.202 NO DOMAIN NAME 23243 129.97.90.203 secure0.uwaterloo.ca 23244 129.97.90.204 msma.uwaterloo.ca 23245 129.97.90.205 ehab0.uwaterloo.ca 23246 129.97.90.206 calliope1.uwaterloo.ca 23247 129.97.90.207 calliope2.uwaterloo.ca 23248 129.97.90.208 dsip-lpt.uwaterloo.ca 23249 129.97.90.209 churchill.uwaterloo.ca
IP Addresses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
IP Addresses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
IP Addresses ,[object Object],[object Object],[object Object],[object Object],[object Object]
IP Addresses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
UW Student ID Numbers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
UW Student ID Numbers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],... ... ... ... 454 455 456 84 457 458 459 460 461 462 463 79 464 465
UW Student ID Numbers ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
UW Student ID Numbers ,[object Object],[object Object],[object Object]
IP Addresses ,[object Object],[object Object],[object Object],[object Object],[object Object]
IP Addresses ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
IP Addresses ,[object Object],Object 32-bit integer Map to an index  0, ...,  M  – 1 Deal with collisions Techniques vary... Modulo, mid-square, multiplicative, Fibonacci Chained hash tables Open addressing Linear Probing Double Hashing
Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Usage Notes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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