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删除字符串 

package HelloPackage

import scala.io.StdIn

object DeleteStr {
  def main(args: Array[String]): Unit = {
    var str1 = ""
    var str2 = ""
    var i = 0
    var j = 0
    var flag = 0
    print("请输入第一个字符串:")
    str1 = StdIn.readLine()
    print("请输入第二个字符串：")
    str2 = StdIn.readLine()

    for (i <- 0 to str1.length-1){
      j = 0
      flag = 0

      for (j <- 0 to str2.length-1){
        if (str1.charAt(i).equals( str2.charAt(j) ) ){
          flag = 1
        }
      }

      if (flag == 0){
        print(str1.charAt(i))
      }

    }
  }
}

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