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Introduction to Scala
course content

Course Content

Introduction to Scala

Introduction to Scala

1. Getting Started
Why Scala?How Scala Works?Scala’s SyntaxWriting Your First ProgramWriting Comments
2. Variables and Data Types
Basic Data TypesChallenge: Specify the Data TypesVariable Type InferenceMutable and Immutable Variables/Data TypesArithmetic OperatorsOrder of OperationsChallenge: Calculate Customer Acquisition CostAssignment OperatorsMore about CharSummary Quiz
3. Conditional Statements and Loops
If-Else StatementIf-Else ChainCombining Multiple ConditionsWhile LoopDo-while LoopFor LoopChallenge: Nesting in LoopsSummary Quiz
4. Arrays
What is an Array?Iterating in ArraysChallenge: Fill an ArrayTwo-Dimensional ArraysIterating in 2D ArraysChallenge: Fill a 2D ArraySummary Quiz
5. Strings
What is a String?Iterating in StringsCommonly Used String MethodsChallenge: Applying String Methods in PracticeSummary Quiz

bookChallenge: Fill a 2D Array

Task

Your task create a 3x2 2D array of integers named matrix and fill it with elements which have the value of equal to i + j, where i is the row index, and j is the column index. Use two for loops with the loop variables named i and j to iterate over its indices.

java

Main

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object Main {
  def main(args: Array[String]): Unit = {
    var ___ = Array.___[___](___, ___)  // Create a 3x2 2D array
    for (___ ___ matrix.___) {  // Iterate over the row indices
      for (___ ___ matrix(___).___) {  // Iterate over the columns indices
        matrix(___)(___) = ___  // Assign the sum of indices to the current element
        print(matrix(___)(___) + " ")
      }
      println()
    }
  }
}

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Section 4. Chapter 6
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