Intro to Programming and Data Science (Spring 2020)/Day 2 Coding Challenges

As a reminder, it's not essential that you solve or get through all of these — I'm not grading your answers on these. That said, being able to work through at least many of them is a good sign that you have mastered the concepts for the week. It is always fine to collaborate or work together on these problem sets. The only thing I ask is that you do not broadcast answers on Brightspace more than 24 hours before class.

Required

 * Finish DataCamp Intro to Python Chapter 1
 * Python for Everyone Exercises:
 * Chapter 1: Exercises 1, 6, 7
 * Chapter 2: Exercises 2, 3, 4, 5
 * Chapter 3: Exercises 1, 2, 3*
 * Chapter 4: Exercises 1-4*, 5, 6, 7*

(Starred exercises are optional; if you feel like you need more practice in a topic)

Additional Challenges
Check out the Wordplay project which was developed for a different version of this course (and which we may come back to later).

Challenges about finding words:

for letter in 'abcdefghijklmnopqrstuvwxyz': # do something
 * 1) Find all words that start with 'a' and are 9 or more letters long.
 * 2) What is the longest word that starts with a 'q'?
 * 3) Find all words that end with 'nge'
 * 4) Find a word that matches "a*ey" (here "*" means any letter). Are there any words that match?
 * 5) Print every other word that matches the condition in (1) above.
 * 6) Find at least one word that uses all five vowels in order.
 * 7) For every letter, print the word that uses that character the most. (Hint: use two nested for loops. First one is


 * 1) (Challenge) Find the longest string where no character appears more than 1 time. (Hint: look up counters)

Use Python to find one other interesting fact about the data set. Examples (that you can't use) might be:
 * One of the words that is tied for the most vowels is aquifoliaceous
 * The word with the highest consonant to vowel ratio is sulphhydryls