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ap computer science a all posts computer science academy galileo toggle navigation computer science academy exploring cs about ecs ap cs principles apcsp home about apcsp all posts post list ap cs a apcsa home about apcsa all posts post list slack google classroom github codenvy gradescope resources about csa computer science academy creative problem solving for the 21st century galileo academy of science and technology click here to learn more about computer science at galileo ap computer science a all posts about ap computer science a all posts post list more ap exam practice some more resources for review and practice java review for the ap cs a exam apcsa exam tips the ultimate list of ap computer science tips ap 1 you will prepare for free response questions with codingbat problems go to http codingbat com java do the coding problems in ap 1 all 21 problems in ap 1 must be done by monday may 1st quiz 7 sorting algorithms practice sort the following array using each of the three sorting algorithms 26 48 12 92 28 6 33 selection sort insertion sort merge sort which of the following sorting algorithms is shown in the sort below choose all correct answers 8 73 89 20 94 83 58 8 73 89 20 94 83 58 8 73 89 20 94 83 58 8 73 89 20 94 83 58 8 73 20 89 83 94 58 8 20 73 89 58 83 94 8 20 58 73 83 89 94 selection sort insertion sort merge sort none of the above which of the following sorting algorithms is shown in the sort below choose all correct answers 51 11 56 83 20 26 33 11 51 56 83 20 26 33 11 20 56 83 51 26 33 11 20 26 83 51 56 33 11 20 26 33 51 56 83 11 20 26 33 51 56 83 11 20 26 33 51 56 83 selection sort insertion sort merge sort none of the above which of the following sorting algorithms is shown in the sort below choose all correct answers 83 5 8 12 65 72 71 5 83 8 12 65 72 71 5 8 83 12 65 72 71 5 8 12 83 65 72 71 5 8 12 65 83 72 71 5 8 12 65 72 83 71 5 8 12 65 71 72 83 selection sort insertion sort merge sort none of the above what are the advantages and disadvantages of each of the following sorting algorithms selection sort insertion sort merge sort which of the following sorting algorithms should you use to sort short arrays in a memory limited real time application selection sort insertion sort merge sort which of the following sorting algorithms is most efficient for sorting arrays that are already mostly in order selection sort insertion sort merge sort which of the following sorting algorithms is most efficient for sorting large arrays with values in random order selection sort insertion sort merge sort for searching an unordered list which search algorithm is the better choice for searching an ordered list which search algorithm is the better choice in what situations would the binary search algorithm be useful in what situations would the linear search algorithm be useful for an array of a million element how many elements at most would you need to check using binary search in order to determine whether a specific element is in the array for a list of 100 elements how many elements would you need to check using binary search in order to find out if a particular element is in the list recursion 1 we will use what you ve learned about recursion on some codingbat problems go to http codingbat com java do the coding problems in recursion 1 all 30 problems in recursion 1 must be done by wednesday january 18th quiz 4 review quiz 4 will be on monday november 7th it will cover for loops for arrays and strings as well as number representations binary hexadecimal octal and unit testing here are some review questions what is the hexadecimal base 16 number that is equivalent to the binary base 2 number 11011100 see hw2 for more example questions on binary hexadecimal etc how do you test a method that does not return anything why is unit testing beneficial why is writing more tests better than writing just a few review junit testing lesson slides multiple choice practice with loops what is the printed output of this code int arr 3 5 8 10 3 4 5 3 for int i 2 i write a method that returns an array of 30 random integers from 0 to 50 write the twobornottwob method with a for loop to that will return whether the string has exactly two b characters in it public boolean twobornottwob string a write the summod4is3 method with a for loop to find and return the sum of all the values x in the given array where x mod 4 is 3 i e if the remainder is 3 when dividing by 4 public int summod4is3 int c write the squaremultiplesof5 method with a for loop to modify all the values in the array that are multiples of 5 by squaring them the method must modify the given array and return the same array e g if the array is 1 3 4 5 10 the modified array would be 1 3 4 25 100 public int squaremultiplesof5 int b write the shorteststring method with a for loop to find and return the length of the shortest string in a given array of strings e g if the array is halloween java testing number the method would return 4 public int shorteststring string d string 2 we will use what you ve learned about strings and for loops to solve some more puzzles go to http codingbat com java do the coding problems in string 2 all 20 problems in string 2 must be done by thursday october 27th array 2 we will use what you ve learned about arrays and for loops to solve some more puzzles go to http codingbat com java do the coding problems in array 2 all 34 problems in array 2 must be done by wednesday october 19th dragonpokemon subclass you will write a dragonpokemon class that is a subclass of the pokemon superclass here are the things you should include in the dragonpokemon class it should be a subclass of the pokemon superclass it should have instance variables for storing pokemon types note that pokemon can have up to two types it should have multiple constructors depending on if a type is given when the object is instantiated it should have a method that prints out the pokemon s types dragon type pokemon are powerful so you need to override their attack method to deal 200 damage instead of 50 all dragon type pokemon can use an attack called dragon rage write a new method called dragonrage that allows them to use the superclass s attack method to deal damage eight times for a total of 400 damage using dragon rage but does not override overload the attack method the hit points of the other pokemon should be printed out each time it does 50 damage use a for loop in this method all variables and methods in this subclass should be set to either public or private once you are finished with both the trainer class and dragonpokemon class and you have tested both thoroughly make sure they are pushed to github pokemon oop hope you enjoyed the pokemon connection code for the pokemon class is provided on github now that we have created pokemon objects we need to create some pokemon trainers use the template for the trainer class and implement the variables and methods specified in the comments feel free to modify the test file to thoroughly test all your methods logic 2 time to solve some more logic puzzles go to http codingbat com java do the coding problems in logic 2 all 9 problems in logic 2 must be done by wednesday september 28th magpie chatbot lab for this lab you will explore some of the basics of nlp as you explore this you will work with a variety of methods of the string class and practice using the if statement you will trace a complicated method to find words in user input get the magpielab repository via the link on slack which contains the magpie student guide and starter code for each of the activities clone the forked repository on codenvy and work on the lab in the codenvy ide complete each of the exercises and questions when you are done make sure to stage commit and push your changes to github the due date for all the activites is monday september 26th here is a suggested timeline for completing the lab activity 1 friday activity 2 tuesday activity 3 wednesday activity 4 wednesday activity 5 friday string 1 we will use what you ve learned about strings to solve some logic puzzles go to http codingbat com java do the coding problems in string 1 all 33 problems in string 1 must be done by thursday september 15th array 1 we will use what you ve learned about arrays to solve some logic puzzles go to http codingbat com java do the coding problems in array 1 all 27 problems in array 1 must be done by friday september 9th logic 1 we will use what you ve learned about methods and if statements to solve some logic puzzles go to http codingbat com java click on create account and create an account make sure to put your name last first this is not optional after you have created your account click on prefs in the share to text box enter my email address tand sfusd edu click share do the coding problems in logic 1 all 30 problems in logic 1 must be done by friday september 2nd functions and methods part 1 we re going to take another look at functions and do some math today complete this worksheet before moving on to part 2 part 2 we will now take our multi variable functions and turn them into multi parameter methods in java clone the git repository and edit the two java files in the project geometrylab java and geometrylabtest java the first java file will have your method definitions from the worksheet the second file will have a main method with the method invocations calls from the worksheet and use system out println to print out your answers check your answers with the worksheet answers from part 1 calendarprinter this program will be called calendarprinter for reasons that will shortly become obvious start a new project calendarprinter and clone your git repository edit the main in the java file to create a program that will produce the below output when compiled and executed your program should output september 1 september 2 september 3 weekend september 4 weekend september 5 no school labor day september 6 september 7 september 8 september 9 september 10 weekend september 11 weekend september 12 september 13 september 14 september 15 september 16 september 17 weekend september 18 weekend september 19 september 20 september 21 september 22 september 23 end of the marking period september 24 weekend september 25 weekend september 26 september 27 september 28 september 29 september 30 your output should match the above exactly observe all capitalization punctuation and spacing as you might expect there are some other requirements for writing this program the most important of these is that you may only have one line of code that calls system out println and no uses of system out print clearly there is more than one line of printed output therefore you must use a loop and you must use conditionals if statements in your program you must also have at least one string variable getting started with github use cd to navigate in the terminal to your project folder clone your git repository using git clone url use cd to navigate in the terminal to your cloned git repository create a hello java file in your git repository with the code for the hello class public class hello public static void main string args system out println hello world you will use javac to compile your java files in the terminal and java to run them example javac hello java java hello if you have not done so setup the git config with your email and name git config global user email yourusername s sfusd edu git config global user name your name use git in the terminal to stage commit and push your files to github check your changed files using the git status command git status stage your uncommited files this is for adding all uncommited files git add all commit your staged files git commit m add hello program push your changes to github git push you can check if you have done this correctly by checking to see if your program files appear on github all posts post list