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41 lines
1.5 KiB
Dart
41 lines
1.5 KiB
Dart
import 'package:aoc2020/aocbase.dart';
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import 'package:aoc2020/model/readdata.dart';
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// import 'dart:mirrors';
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class AOC20201202 extends AOCBase {
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@override
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Future<void> a({bool test}) async {
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var mylist = await ReadData.readFile<String>(classString, test: test);
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var validPasswords = 0;
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for (var index = 0; index < mylist.length; index++) {
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var mysplit = mylist[index].split(' ');
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var password = mysplit[2];
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var testLetter = mysplit[1].split(':')[0];
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var rangeCount = mysplit[0].split('-');
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var minCount = int.parse(rangeCount[0]);
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var maxCount = int.parse(rangeCount[1]);
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var count = testLetter.allMatches(password).length;
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if (count >= minCount && count <= maxCount) validPasswords++;
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}
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answerA = validPasswords;
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}
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@override
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Future<void> b({bool test}) async {
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var mylist = await ReadData.readFile<String>(classString, test: test);
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var validPasswords = 0;
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for (var index = 0; index < mylist.length; index++) {
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var mysplit = mylist[index].split(' ');
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var password = mysplit[2];
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var testLetter = mysplit[1].split(':')[0];
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var rangeCount = mysplit[0].split('-');
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var index1 = int.parse(rangeCount[0]) - 1;
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var letter1 = password.substring(index1, index1+1) == testLetter;
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var index2 = int.parse(rangeCount[1]) - 1;
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var letter2 = password[index2] == testLetter;
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if (letter1 ^ letter2) validPasswords++;
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}
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answerB = validPasswords;
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}
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}
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