Unit 7 Assignment

Unit 7 Assignment#

Reading#

Codingbat practice#

CodingBat Warmup 2

  • arrayCount9

  • arrayFront9

  • array667

Code#

Make sure to write full unit tests for these functions.

Count lucky#

A number is lucky if it is a multiple of 7 or ends in 7. Write a function that counts the number of lucky numbers in an array of integers.

countLucky({1, 2, 3}) -> 0
countLucky({7, 13, 17}) -> 2    
countLucky({107, 207}) -> 2

Sum of squares (array)#

Write a function that takes a single array of doubles as input, and returns the sum of squares of the values.

sumOfSquares({0}) -> 0
sumOfSquares({1.0, 2.0, 3.0}) -> 14.0
sumOfSquares({2.0, 2.0, 2.0}) -> 12.0

Total Z name length#

Write a function that takes an array of strings as input, and returns the total length of the strings that start with “z” or “Z”.

countZNames({"Dr. Kessner", "Dr. Sands"}) -> 0
countZNames({"Zorro", "zero", "zippy"}) -> 14

Project#

It’s time to start planning and prototyping your coding project!

Your project can be any interactive animation or video game using the Processing libraries.

Your goals for the week:

  • Start your project! Make a folder, and get some code running, even if it’s just a title screen and a bouncing ball.

  • Make sure you understand how to use the Processing libraries in your program. In particular, you will need to understand how to write classes that call the Processing functions via a PApplet reference.

  • Play around with some ideas.

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