Scala Programming: Find the common elements between two arrays of strings

Last update on June 12 2025 12:56:39 (UTC/GMT +8 hours)

Write a Scala program to find the common elements between two arrays of strings.

Sample Solution:

Scala Code:

object Scala_Array {
  import scala.collection.mutable.ArrayBuffer
  def main(args: Array[String]): Unit = {
    var array1 = Array("Python", "JAVA", "PHP", "C#", "C++", "SQL");
    var array2 =
      Array("MySQL", "SQL", "SQLite", "Oracle", "PostgreSQL", "DB2", "JAVA");
    println("Array elements are : ")
    for (c <- array1) {
      print(s"${c}, ")
    }
    println("\nSecond array:")
    for (c <- array2) {
      print(s"${c}, ")
    }

    val temp: ArrayBuffer[String] = ArrayBuffer.empty[String]
    for (i <- 0 to array1.length - 1) {
      for (j <- 0 to array2.length - 1) {
        if (array1(i).equals(array2(j))) {
          temp.append(array1(i));
        }
      }
    }
    println("\nCommon elements of the said two arrays:")
    for (c <- temp) {
      print(s"${c}, ")
    }
  }
}

Sample Output:

Array elements are : 
Python, JAVA, PHP, C#, C++, SQL, 
Second array:
MySQL, SQL, SQLite, Oracle, PostgreSQL, DB2, JAVA, 
Common elements of the said two arrays:
JAVA, SQL,

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