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About Lua

Lua is a lightweight, high-level programming language designed for embedded use in applications.

About Scala

Scala is a general-purpose programming language providing support for functional programming and a strong static type system.

Palindrome Check Example: Lua vs Scala

Palindrome Check in Lua

function isPalindrome(str)
    local clean = string.lower(string.gsub(str, "[^%w]", ""))
    return clean == string.reverse(clean)
end

-- Example usage
print(isPalindrome("A man, a plan, a canal: Panama")) -- true
print(isPalindrome("race a car")) -- false

Palindrome Check in Scala

object PalindromeChecker {
  def isPalindrome(str: String): Boolean = {
    val clean = str.toLowerCase.filter(_.isLetterOrDigit)
    clean == clean.reverse
  }

  def main(args: Array[String]): Unit = {
    println(isPalindrome("A man, a plan, a canal: Panama")) // true
    println(isPalindrome("race a car")) // false
  }
}

Bubble Sort Example: Lua vs Scala

Bubble Sort in Lua

function bubbleSort(arr)
    local n = #arr
    for i = 1, n do
        for j = 1, n - i do
            if arr[j] > arr[j + 1] then
                arr[j], arr[j + 1] = arr[j + 1], arr[j]
            end
        end
    end
    return arr
end

local arr = {64, 34, 25, 12, 22, 11, 90}
local sorted = bubbleSort(arr)
print(table.concat(sorted, " "))

Bubble Sort in Scala

object BubbleSort {
  def bubbleSort(arr: Array[Int]): Array[Int] = {
    val n = arr.length
    for (i <- 0 until n; j <- 0 until n - i - 1) {
      if (arr(j) > arr(j + 1)) {
        val temp = arr(j)
        arr(j) = arr(j + 1)
        arr(j + 1) = temp
      }
    }
    arr
  }

  def main(args: Array[String]): Unit = {
    val arr = Array(64, 34, 25, 12, 22, 11, 90)
    println(bubbleSort(arr).mkString(" "))
  }
}