Loop and conquer

This worksheet provides practice with conditional statements and loops.

Things you need for this worksheet

R — the interpreter can be installed on any operating system.
RStudio — we recommend using RStudio for (interactive) programming with R.

Loop till you drop

This is a self-study exercise; no submission is required. Work through the tasks in R or RStudio and save your code in an R script (.R). If you already use R Markdown, you can use a .Rmd document and render it to HTML instead:

Implement an if-then-else statement that prints “larger” if the number provided as variable n is larger than 1 and “equal or smaller” otherwise.
Extend a copy of the above statement (i.e. copy the entire if-then-else statement and include it a second time in your script in order to preserve both versions) that prints “equal” and “smaller” separately, in addition to “larger”.
Implement an if-then-else statement that prints “even” if the number provided as variable n is even and prints “odd” otherwise.
Place a copy of the extended larger/equal/smaller statement in a for loop. Iterate over values of n that are less than 1, equal to 1, and greater than 1 to demonstrate all three branches.
Extend a copy of the loop so that the labels (“larger”, “equal”, or “smaller”) are stored in a vector instead of being printed during each iteration. Print the vector after the loop.
Extend a copy of the modified loop to store the results in a list instead of a vector. Print the list after the loop.
Change the modified loop to use lapply() instead of a for loop. Save the returned results in a variable and print them after the call.
Finally, add one line after the call to flatten the returned list into a vector. Leave the call itself unchanged.

Save your work in a local project folder. Run the code again to check all branches of your conditions, inspect the stored results, and compare the list and vector outputs. If you chose R Markdown, render the document to check that it runs from beginning to end.