CS 245 Lecture 22 – Hashtables
Agenda what ?s turning keys into integers turning integers into indices handling collisions of indices chaining vs. linear probing finding word frequencies in Project Gutenberg TODO Read chapter 14 through section 14.2. 1/4 sheet. Lab exercise will be easier if you read this before then. Code Map.java Fastmap.java CountedWord.java FrequentWordFinder.java Haiku
CS 491 Lecture 22 – Working with Picasa Web
Agenda what ?s building a Picasa Web browser recover Exercise Today let’s make a browser for Picasa Web. The overarching design is this: The first screen presents a list of albums. When the user selects an album, the app transitions to a list of pictures in that album. When the user selects a picture, the […]
CS 245 Midterm
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CS 245 Preassignment 3 – due before November 28
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CS 245 Lecture 21 – The Problem of Lookup
Agenda what ?s what does this do? program this methods for mapping keys to values TODO Read section 7.2 and 7.3. 1/4 sheet. What Does This Do? Lookup We want to map keys to values: names to phone numbers (a phonebook), web addresses to IP addresses (DNS), terms to their definitions (dictionary), words to their […]
CS 245 Lab 11 – Maze Traversal
First, if you have checkpoints left over from last lab, get them inspected during the first 15 minutes of this lab. Don’t forget to work in pairs! Where possible, please work with someone that you did not work with last week. The exchange of new ideas and perspectives is not an opportunity you want to […]
CS 245 Lecture 20 – More Stack
Agenda what ?s is-a vs. has-a program this solve this postfix calculator searching the filesystem TODO Write a static method reverseString that accepts a String parameter and returns the reversed version. Use a stack instead of the more straightforward algorithm. 1/4 sheet. Program This Solve This Code Stack.java Postfix.java DiskSearcher.java Haiku
CS 245 Lecture 19 – Stack Algorithms
Agenda what ?s new homework program this stack tag checker finding a file postfix calculator Program This Code test.html TagChecker.java Haiku
CS 245 Homework 2 – due before November 18
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CS 245 Lab 10 – Performance Comparison
First, if you have checkpoints left over from last lab, get them inspected during the first 15 minutes of this lab. Don’t forget to work in pairs! Where possible, please work with someone that you did not work with last week. The exchange of new ideas and perspectives is not an opportunity you want to […]