javaLogic errorMedium

Unexpected string split behavior with regex characters

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What it should do

Split the given string using the provided delimiter and return the resulting array. Example: splitString("a.b|c", ".|") -> ["a", "b", "c"]

What happens instead

The output array does not contain the expected split elements.

public class Main {
  public static String[] splitString(String input, String delimiter) {
    return input.split(delimiter);
  }

  public static void main(String[] args) {
    String[] result = splitString("a.b|c", ".|");
    for (String s : result) {
      System.out.println(s);
    }
  }
}

Test a custom input to verify an edge case (e.g. empty lists, negative numbers, duplicates).

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This bug belongs to the logic errors pattern

The wrong operator, an inverted condition, a formula the right way round but backwards.

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public class Main { public static String[] splitString(String input, String delimiter) { return input.split(delimiter); } public static void main(String[] args) { String[] result = splitString("a.b|c", ".|"); for (String s : result) { System.out.println(s); } } }

Unexpected string split behavior with regex characters

What it should do

What happens instead

More logic errors to practise

Unexpected string split behavior with regex characters

What it should do

What happens instead

More logic errors to practise