Lab Check-Offs

No checkoff needed for Lab 1!

Show your Field of Flowers.

Show your random-walk sprite.

Show your draw square-leaved flower...` block.

Why should you Build Your Own Blocks? Give a reason that someone may create a custom block.

What are some different ways to achieve repetition? Name at least 2.

What is a Boolean? Explain why we use them, and give examples of functions that report a Boolean value.

What does the mystery reporter (at the bottom of the “Reporter Blocks” page) report when run with the inputs hello and 5?

Name a few of the input types. Why is it important that we specify input types?

Explain the difference between a command and a reporter block.

How are global variables different from script variables?

Show us your traffic signal and letter grade blocks.

Show us the is _ between _ and _ ? block.

Show and explain your sum of two smallest block.

What is a list? Why would we use a list of 10 elements instead of just making 10 variables?

What do map, keep, and combine each do?

What is the difference between the for each (item) loop and the for (i) loop we have used in previous labs?

Show us your acronym block.

Show us your expand block.

What is an algorithm? Please give an example both in real life and from class.

Are algorithms which are (on average) faster always “better”? Why or why not?

What might some “trade-offs” to different computer science algorithms be?

How can abstraction and algorithms relate in computer science?

Please show both your findNumberInUnsortedList and findNumberInSortedList functions and describe the difference in the algorithms used.

Of all the runtimes you have discovered thus far, can you rank them from “fastest” to “slowest”? Why is runtime important for the programs that we create?

Name the logarithmic time algorithm that we implemented in Lab 5. Explain why this algorithm runs in logarithmic time.

What is the difference between “Worst-Case” and “Best Case” Runtimes when running the Are the numbers of (LIST) distinct block? Why?

What happened with the time it took for your computer to counter up the numbers between 1 and x when you started doubling the numbers? Tripling the numbers? What do you think would happen with the time I multiplied your top number by 8?

Please show me your Non-Gauss and Gauss Add all numbers in. Which was faster? Why?

How does the test block work? What is its domain and range?

How will writing tests help you for the 2048 assignment?

How do merge up and merge column work? What is the domain/range of each block?

What is the domain and range of the update display block?

Show us the output of your test block on the merge column. Explain why this output makes sense.

Why did we have variables like Size, Start, and Display Width when designing our board? What do they do?

Explain an advantage of using an underlying board structure when designing a game.

Show your working board game by moving the sprite around the board and clicking to place bugs.

Why is it important that the inputs to a recursive call be smaller than the original inputs to the function?

Why is it important that the sprite face the same direction at the end of a recursive function as it faced initially?

What defines a recursive block? What are the two necessary “cases” that a recursive block must consider? Name and define them.

Please show me your snowflake block.

Please show me your crazy-tree block.

Why do we map the first item of the set in front of a recursive call of subsets over the rest of the list?

Explain why the second version of subsets only makes 7 calls instead of 64.

Explain how the sort block works, how the merge block works, and how they work together.

Show us the recursive numbers block.

Show us the recursive ends-e block.

What is a higher-order function? Can you give an example of one?

Show us your pandigital block and explain how it works.

Show us your factorion block and explain how it works.

Show us your list all factorions function. How does this compare to the list all pandigital numbers function?

What is the difference between the python, python file.py, and python -i file.py terminal commands?

What is the difference between the print and return Python commands?

Show your reverse_string(string)` function. If you implemented it iteratively, explain the recursive solution. If you implemented it recursively, explain the iterative solution.

Show your palindrome(string) function.

Show your c-curve function and its output.

What is the difference between = and == in Python?

What is a dictionary?

What does 0-indexing mean?

Show us the result of running the autograder.

Describe the purpose of an init function.

To access a class attribute, should you use the class name or an instance name?

Name two different ways to assign instance attributes.

Show us your outdated and add_genre methods, as well as what the autograder outputs.

What are the arguments of the “open” function and what does it return?

How do we choose how something is sorted when using the “sorted” function in Python?

Show us your izzle or pig_latin function.

Show us your top_n_words and “print_top_n_words” functions.

Show us your apply_language_game function.

Show us the result of running the autograder.

What are some important commands that you can use to keep only certain rows in a table?

Describe the three main steps of working with data as given in this lab.

What commands did you use to find the price of the most expensive listing in San Francisco?

Show us your scatter plot. What are some things you notice from this plot?

What is a race condition?

Is it always true that splitting a task among 10 “workers” (or cores) is better than splitting it among 5 “workers” (or cores)?

What is the difference between determinism and nondeterminism in the context of concurrency?

How does Snap! handle concurrency?

This lab does not have checkoff questions. We encourage students to go through the assignment at their leisure if they’re interested.