Question

How to remove the last occurrence of a word from a string in Scala

Answer 1

object RemoveTheLastOccurrenceOfAWordFromAString_Scala {
  def removeLastOccurrenceOfAWordFromAString(str: String, word: String): String = {
    // Find the position of the last occurrence of word in str
    val pos = str.lastIndexOf(word)

    if (pos != -1) {
      str.substring(0, pos) + str.substring(pos + word.length)
    } else {
      str
    }
  }

  def main(args: Array[String]): Unit = {
    var str = "scala c# c python scala c++ java scala rust"
    val word = "scala"

    str = removeLastOccurrenceOfAWordFromAString(str, word)

    println(str)
  }
}


   
/*
           
run:
     
scala c# c python scala c++ java  rust
       
*/

 

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