Javascript 从Java到Java的Port Inn代码验证

将代码从Java移植到JavaScript是一项相当容易的任务.

您可能应该包含完整的Java代码.以下是我认为它会是什么样子:

我看到characters.get被称为characters.get，所以看起来characters是List<Character>.更好的做法是展示Java代码如何将String转换为List.

import java.util.List;

public class Validator {
  private static final int[] INN_MULTIPLIERS = {-1, 5, 7, 9, 4, 6, 10, 5, 7};

  public static boolean isValid(List<Character> characters) {
    int sum = 0;
    int lastCharacterIndex = characters.size() - 1;
    for (int index = 0; index < lastCharacterIndex; index++) {
        sum += Character.digit(characters.get(index), 10) * INN_MULTIPLIERS[index];
    }
    int checkDigit = (sum % 11) % 10;
    return Character.digit(characters.get(lastCharacterIndex), 10) == checkDigit;
  }

  public static void main(String[] args) {
    // for (int i = 10000000; i < 99999999; i++) {
    //     String code = Integer.toString(i, 10);
    //     List<Character> digits = code.chars().mapToObj(e -> (char) e).toList();
    //     if (isValid(digits)) {
    //         System.out.println(i); // A valid code
    //     }
    // }

    String code = "18158984"; // Should be valid
    List<Character> digits = code.chars().mapToObj(e -> (char) e).toList();
    System.out.println(isValid(digits));
  }
}

以下是等效的JavaScript代码:

1. Character.digit可以移植到parseInt
2. Java中的==(双等号)在JavaScript中应该是===(三个等号

const INN_MULTIPLIERS = [-1, 5, 7, 9, 4, 6, 10, 5, 7];

function isValid(characters) {
  let sum = 0;
  const lastCharacterIndex = characters.length - 1;
  for (let index = 0; index < lastCharacterIndex; index++) {
    sum += parseInt(characters[index], 10) * INN_MULTIPLIERS[index];
  }
  const checkDigit = (sum % 11) % 10;
  return parseInt(characters[lastCharacterIndex], 10) === checkDigit;
}

const code = "18158984"; // Should be valid
const digits = code.split('');
console.log(isValid(digits));