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In this post, we will look at a simple program to reverse a List of elements without using utility method(reverse) in Scala.
Let’s look at the program:
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package com.clearurdoubt object Reversing { def main(args: Array[String]) { val list = List(3,4,5,1,2,3) val rev = reversed(list) println(rev + " @@ " + list.reverse) } def reversed(input: List[Int]): List[Int] = input match { case List() => input case x :: xs => reversed(xs) ::: List(x) } } |
Output:
Happy Learning.
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