Scala: Traverse an array

 Approach 1: Using for loop (for-each) model

for(ele <- primesArray) print(s"$ele ")

scala> val primesArray = Array(2, 3, 5, 7, 11)
val primesArray: Array[Int] = Array(2, 3, 5, 7, 11)

scala> for(ele <- primesArray) print(s"$ele ")
2 3 5 7 11

Approach 2: Using for loop by accessing index.

scala> for(index <- 0 until primesArray.length) {
     |    val ele = primesArray(index)
     |    print(s"$ele ")
     | }
2 3 5 7 11

Approach 3: Using while loop.

scala> var index  = 0
var index: Int = 0

scala> while(index < primesArray.length){
     |   val ele = primesArray(index)
     |   index += 1
     |   print(s"$ele ")
     | }
2 3 5 7 11

Approach 4: Using do-while loop

scala> var index = 0
var index: Int = 0

scala> do{
     |   val ele = primesArray(index)
     |   index += 1
     |   print(s"$ele ")
     | }while(index < primesArray.length)
2 3 5 7 11

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