Discussion on: Daily Challenge #243 - Redacted!

void main() {
  var doc1 = "TOP SECRET:\nThe missile launch code for Sunday XXXXXXXXXX is:\nXXXXXXXXXXXXXXXXX";
  var doc2 = "TOP SECRET:\nThe missile launch code for Sunday 5th August is:\n7-ZERO-8X-ALPHA-1";
  print(allegedlySimilar(doc1, doc2)); // true

  doc1 = "The name of the mole is Professor XXXXX";
  doc2 = "The name of the mole is Professor Dinglemouse";
  print(allegedlySimilar(doc1, doc2));  // false

  doc1 = "XXXXXXXX XXXXXXX XXXXXXXXXXXXXXXXXXX\nXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXX XXXXXXXXXXXXX XXXXX";
  doc2 = "Area-51. Medical Report. 23/Oct/1969\nE.T. subject 4 was given an asprin after reporting sick for duty today";
  print(allegedlySimilar(doc1, doc2)); // true
}

bool allegedlySimilar(String doc1, String doc2) {
  var redacted = (data) {
    List<String> joined = List<String>();
    var lines = data.split("\n");
    for(var line in lines) {
      var data = StringBuffer();
      line.split('').forEach((char) => data.write('X'));
      joined.add(data.toString());
    }
    return joined.join("\n");
  };
  return redacted(doc1) == redacted(doc2);
}