CODEWITHSUNDEEP
java
Beauregard Lionett
Beauregard Lionett

Reputation: 321

Profanity Filter: I just need some help on how to make it recognize _only_ the values in an array

    /*

    Profanity Filter:
    - Cat
    - Dog
    - LLama
    - Has to differ cases, like cAt
    - Has to differ words that contain the words to be filtered, "Cataclysm", for example. Hello, World of Warcraft.

*/

import java.util.Scanner;

public class ProfanityFilter
{
    public static void main (String[] args)
    {
        Scanner kb = new Scanner(System.in);
        String userInput, toLowerCase;
        boolean flag = false;
        int i;
        String[] list = new String[12];
        list[0] = "cat";
        list[1] = " cat";
        list[2] = "cat ";
        list[3] = " cat ";
        list[4] = "dog";
        list[5] = " dog";
        list[6] = "dog ";
        list[7] = " dog ";
        list[8] = "llama";
        list[9] = " llama";
        list[10] = "llama ";
        list[11] = " llama ";

        System.out.println("Enter a string:");
        userInput = kb.nextLine();
        toLowerCase = userInput.toLowerCase();

        for (i = 0; i < list.length; i++)
        {
            if(toLowerCase.contains(list[i]) | toLowerCase.equals(list[i]))
            {
                flag = true;
            }
        }

        if (flag)
        {
            System.out.println("Something you said is forbidden.");
        }
        else
        {
            System.out.println("Nothing was found");
        }
    }
}

I'm just having trouble finding the proper exception to what I need. I know I'm pretty close, but I'm also tired after trying many many hours to solve this problem and coming out empty of a solution that will return true for the instances I need (the ones in the array). Can you point me out to what I'm doing wrong in here or to a proper solution without regular expressions?

I've already tried to put a break; after I turn the boolean flag to true but it didn't work, it keeps iterating and thus the output keeps being false.

Thanks!

Upvotes: 1

Views: 540

Answers (1)

Andreas
Andreas

Reputation: 5103

Here is a potential solution:

public class Class {
  private static final String[] profaneWords = {
    "cat",
    "dog",
    "llama"
  };

  public static void main(String... args) {
    System.out.println(isProfane("this is some user input."));
    System.out.println(isProfane("this is some user input containing the dirty word 'Cat'."));
    System.out.println(isProfane(" cat "));
    System.out.println(isProfane("Cat"));
  }

  private static boolean isProfane(final String input) {
    for (final String profanity : profaneWords) {
      if (input.toLowerCase().contains(profanity)) {
        return true;
      }
    }
    return false;
  }
}

Here is a streaming java8 version:

import java.util.Arrays;

public class Class {
  private static final String[] profaneWords = {
    "cat",
    "dog",
    "llama"
  };

  private static boolean isProfane(final String input) {
    return Arrays.stream(profaneWords)
      .anyMatch(input.toLowerCase()::contains);
  }
}

Upvotes: 2

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