scala-first-look

Scala First Look course at LinkedIn Learning

Challenges

Challenge 1: Translate Java to Scala

Translate the Java class below to Scala.

public class Calculator {

  public static void main(String[] args) {
    int x = 10;
    int y = 5;
    System.out.println(addition(x, y));
    System.out.println(quotient(x, y));
    System.out.println(times(x, y));
    System.out.println(minus(x, y));

  }
  public static int addition(int a, int b) {
    return a + b;
  }

  public static int quotient(int a, int b) {
    if(b == 0)
      return 0;
    return a/b;
  }

  public static int times(int c, int d) {
    return c * d;
  }

  public static int minus(int a, int b) {
    return a - b;
  }

}

Solution

Calculator.scala

Challenge 2: Scala Basics

Take the following list of numeric grades and print a letter grade for each value. Print also the average of all numeric grades.

var grades = List(100, 99, 75, 67, 89, 85, 92, 93, 60, 97, 88)

Scale for letter grades

Result	Grade
93-100	A
86-92	B
77-85	C
69-76	D
Below 69	F

Solution

Grades.scala

Challenge 3: Movies Ratings

1. Create a map with movies and their rating.
2. Print the map.
3. Add another movie to the map.
4. Print the map again.

Solution

Movies.sc

Challenge 4: Employees

1. Create an employee case class. Employees should have an id, first name and last name
2. Override the toString method
3. Create and print a list of employees

Employees should be printed in the following format

Employee ID: 12345
Full Name: firstName lastName

Solution

Employees.sc