Day 16 / Mar 22 (Tue)¶

Warm-Up Exercises¶

All Coordinates¶

Write a function that takes 8 uppercase letters (from A to H) and 8 numbers (from 1 to 8) and returns all the possible 64 coordinates (A1, A2,..., A8, B1,...).

Review a solution in solutions/all-coordinates.sc.

Corner Half¶

Change the above function to return one of the two "corner" halves.

Review a solution in solutions/cornerHalf.sc.

Word Occurences¶

Write a function that reads a file and prints out word stats: all the words and their occurences.

Review solutions in solutions/wordOccurences.sc.

Type Aliases¶

Read up on the topic in Type alias:

Type aliases should be used instead of subtyping, when this subclassing does not actually extend the original type.

case class Occ(n: Int)

type Occurence = Int
type Word = String

With the above type aliases, you can define a return type to be Seq[(Word, Occurence)].

collection.Map¶

Learn more in the following resources:

1. Standard Library
2. scala.collection.Map

Pair Programming¶

Use Pair programming technique and our randomPairs polymorphic method to work together on a solution to the exercise.

File Stats¶

Write a function that reads a file and prints out the file statistics based on one of the following command-line options:

1. --words - All the words and their occurences

2. --lines - All the lines and their length (number of characters, incl. whitespaces), the number of words, and the words themselves (as a comma-separated sequence or similar)

Schedule¶

1. 8:30 - 10:15
   • 15' break
2. 10:30 - 11:50
3. 12:45pm - 1:40pm
4. 1:50pm - 2:30pm