kakko-kokka.dart

kakko-kokka.dart

void main() {
  testExtractStrings();
}

List<String> extractStrings(String input) {
  List<String> result = [];
  List<int> stack = [];
  int startIndex = 0;

  for (int i = 0; i < input.length; i++) {
    if (input[i] == '[') {
      if (stack.isEmpty) {
        String head = input.substring(startIndex, i);
        result.add(head);
      }
      if (stack.isEmpty) {
        startIndex = i + 1;
      }
      stack.add(i);
    } else if (input[i] == ']' && stack.isNotEmpty) {
      if (stack.length == 1) {
        String extractedString = input.substring(startIndex, i);
        startIndex = i + 1;
        result.add(extractedString);
      }
      stack.removeLast();
    }
  }

  if (startIndex != 0) {
    result.add(input.substring(startIndex));
  }

  return result;
}

void testExtractStrings() {
  String input = "あいうえおかきく[け[こ]さ]し]す]せそ";

  List<String> expected = ["あいうえおかきく", "け[こ]さ", "し]す]せそ"];

  List<String> result = extractStrings(input);
  result.forEach((String line) {
      print(line);
  });

  if (result.length != expected.length) {
    print("Test failed: Length mismatch");
    print("Expected length: ${expected.length}, Actual length: ${result.length}");
    return;
  }

  for (int i = 0; i < result.length; i++) {
    if (result[i] != expected[i]) {
      print("Test failed: Mismatch at index $i");
      print("Expected: ${expected[i]}, Actual: ${result[i]}");
      return;
    }
  }

  print("Test passed!");
}