package com.jooinfoo.logic

object Learn {

  @JvmStatic
  fun main(args: Array<String>) {
     val letters1 = arrayOf("A","B","C","B","A")
     val letters2 = arrayOf("A", "B","C","D","E","C","F","Z")
     val letters3 = arrayOf("A","B","C","X","Y","Z")
     findSameLetter(letters1)
  }

  private fun findSameLetter(letters: Array<String>) {
      var sameLetter = "false"
      for (i in 0 until letters.size) {
          for (j in i until letters.size) {
              if (i!=j && letters[i] == letters[j]) sameLetter = letters[i]
          }
      }
      println("Same letter is $sameLetter")
  }
}