Question

How to remove a pair of the same adjacent characters from a string in Scala

Answer 1

object RemoveAdjacentPair_Scala {
  def removeAdjacentPair(s: String): String = {
    var str = s
    var i = 0
    while (i < str.length - 1) {
      if (str(i) == str(i + 1)) {
        str = str.substring(0, i) + str.substring(i + 2)
        if (i != 0) i -= 1
      } else {
        i += 1
      }
    }
    
    str
  }

  def main(args: Array[String]): Unit = {
    var s = "aabcccdeeffffgac"
    
    s = removeAdjacentPair(s)
    
    println(s)
  }
}





/*
run:
  
bcdgac

*/

 

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