CODEWITHSUNDEEP
arraysscala
D.L.
D.L.

Reputation: 169

How to check whether a particular value exists in an array in Scala

I have a matrix in terms of a 2D array and another 1-D array. I am taking one element from the matrix and checking whether it exists in the array. Following is the code.

val array_intrval = Array.ofDim[Int](10)
var joint_matrix = Array.ofDim[Int][Int](5)(2)
for(i <- 0 to 4) {
  for (j <- 0 to 1) {
    var a = joint_matrix(i)(j)

After this, I want to check whether a exists in array_intrval, if not add a in array_intrval and then check whether there are some elements which is less than or equal to a. If yes, also put them in array_intrval. If a does exists in array_intrval, skip a and check for next element in joint_matrix.

I am a beginner in Scala and not able perform this. Any help regarding this will be highly appreciated.

Upvotes: 3

Views: 7672

Answers (1)

Rahul
Rahul

Reputation: 13056

Take a look at the documentation of Array class. You'll find many useful methods there. For ex., a method called contains can be used to check if a certain element exists in the array or not.

scala> val array_intrval = Array.ofDim[Int](10)
array_intrval: Array[Int] = Array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0)

scala> array_intrval(1) = 2

scala> array_intrval
res1: Array[Int] = Array(0, 2, 0, 0, 0, 0, 0, 0, 0, 0)

scala> array_intrval.contains(2)
res3: Boolean = true

scala> array_intrval.contains(0)
res4: Boolean = true

scala> array_intrval.contains(5)
res5: Boolean = false

Upvotes: 4

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