How to resolve the algorithm CUSIP step by step in the Scala programming language

Published on 12 May 2024 09:40 PM
#Scala

How to resolve the algorithm CUSIP step by step in the Scala programming language

Table of Contents

Problem Statement

A   CUSIP   is a nine-character alphanumeric code that identifies a North American financial security for the purposes of facilitating clearing and settlement of trades. The CUSIP was adopted as an American National Standard under Accredited Standards X9.6.

Ensure the last digit   (i.e., the   check digit)   of the CUSIP code (the 1st column) is correct, against the following:

Let's start with the solution:

Step by Step solution about How to resolve the algorithm CUSIP step by step in the Scala programming language

Source code in the scala programming language

object Cusip extends App {

  val candidates = Seq("037833100", "17275R102", "38259P508", "594918104", "68389X106", "68389X105")

  for (candidate <- candidates)
    printf(f"$candidate%s -> ${if (isCusip(candidate)) "correct" else "incorrect"}%s%n")

  private def isCusip(s: String): Boolean = {
    if (s.length != 9) false
    else {
      var sum = 0
      for (i <- 0 until 7) {
        val c = s(i)
        var v = 0
        if (c >= '0' && c <= '9') v = c - 48
        else if (c >= 'A' && c <= 'Z') v = c - 55 // lower case letters apparently invalid
        else if (c == '*') v = 36
        else if (c == '@') v = 37
        else if (c == '#') v = 38
        else return false
        if (i % 2 == 1) v *= 2 // check if odd as using 0-based indexing
        sum += v / 10 + v % 10
      }
      s(8) - 48 == (10 - (sum % 10)) % 10
    }
  }

}

You may also check:How to resolve the algorithm Strip control codes and extended characters from a string step by step in the Erlang programming language
You may also check:How to resolve the algorithm Sort numbers lexicographically step by step in the Wren programming language
You may also check:How to resolve the algorithm Binary search step by step in the Kotlin programming language
You may also check:How to resolve the algorithm Tokenize a string with escaping step by step in the C++ programming language
You may also check:How to resolve the algorithm Entropy step by step in the Lambdatalk programming language