L1 - CSE 12 Basic data structures and object-oriented...

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CSE 12 : Basic data structures and object-oriented design Jacob Whitehill [email protected] Lecture One 1 Aug 2011 Monday, August 1, 2011
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Welcome CSE 12 is a programming-oriented introduction to fundamental data structures of computer science. By the end of this course, you will hopefully know: What data structures are. Why selecting the right data structure is important. When to use a particular type of data structure. How the most common data structures are implemented in code and in memory. How object-orientation can facilitate good program design. Monday, August 1, 2011
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Administrivia. Monday, August 1, 2011
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Course structure 4 lectures/week: M, T, W, Th 11:00a - 12:20p Here 4 programming assignments (45%) 1 midterm (20%), 1 final (30%) Class participation (5%) CSE 12 Moodle web forum In-class unannounced quizzes (yay!) Monday, August 1, 2011
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Teaching staff Lecturer: Me Teaching assistant (TA): Vineet Kumar Tutors/graders: Stephanie Yeh Anthony Dang Kerwin Azares Monday, August 1, 2011
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Course website http://ieng6.ucsd.edu/~cs12v Monday, August 1, 2011
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Moodle forum http://csemoodle.ucsd.edu Appropriate contributions: Questions about programming projects, data structures, or anything else in computer science. Answers to the above. Suggestions for topics you want to hear about during lecture and/or discussion section. Monday, August 1, 2011
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Discussion section Go to CSE 12 Moodle web forum and list your availability! Monday, August 1, 2011
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Warning on grammar “Data” is technically a plural (“your data are so lovely”) BUT: Data in plural form can sound very pretentious. In this course I will alternate between them inconsistently. Monday, August 1, 2011
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Storing information in a river of 1’s and 0’s. Monday, August 1, 2011
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Consider the following request: Dear you, Please email me your phone number. Thanks, Someone else Monday, August 1, 2011
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Transmitting your phone # To transmit your phone number by email, the 10 digits must be converted into a binary sequence of 1’s and 0’s. That’s all you (ever) have to work with . Your computer Someone else’s computer 10000101100010000010001001 ... Monday, August 1, 2011
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Transmitting your phone # Phone numbers in USA: 10 decimal digits, e.g., (858) 822-5241. Step 1 : concatenate 10 digits into one simple string. 8588225241 Step 2 : encode each digit using a few bits (how many?). Monday, August 1, 2011
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Transmitting your phone # For example, to encode digit 8 using 4 bits, we write 1000 . To encode 1 in binary, we write 0001 . Given the binary codes for each decimal digit, we concatenate all the codes together (in order), e.g., 10000101100010000010001001010010 01000001 Monday, August 1, 2011
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Transmitting your phone # We then send this bit sequence over the network to Someone else. Your computer Someone else’s computer 1000010110...
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