ckaczor/Advent2019
1
0
Fork 0
mirror of https://github.com/ckaczor/Advent2019.git synced 2026-01-13 17:22:15 -05:00
Code Issues Packages Projects Releases Wiki Activity

Day 4

Browse Source
This commit is contained in:
Chris Kaczor
2019-12-04 18:47:39 -05:00
parent 26928243e0
commit f06aa3b590
3 changed files with 67 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
Advent.csproj.DotSettings
View File

@@ -1,4 +1,5 @@
<wpf:ResourceDictionary xml:space="preserve" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:System;assembly=mscorlib" xmlns:ss="urn:shemas-jetbrains-com:settings-storage-xaml" xmlns:wpf="http://schemas.microsoft.com/winfx/2006/xaml/presentation">
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=day1/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=day2/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=day3/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=day3/@EntryIndexedValue">True</s:Boolean>
<s:Boolean x:Key="/Default/CodeInspection/NamespaceProvider/NamespaceFoldersToSkip/=day4/@EntryIndexedValue">True</s:Boolean></wpf:ResourceDictionary>

63
Day4/Day4.cs Normal file
View File

@@ -0,0 +1,63 @@
using System;
using System.Linq;
namespace Advent
{
public static class Day4
{
public static void Execute()
{
//Console.WriteLine(IsValidPassword("112233"));
//Console.WriteLine(IsValidPassword("123444"));
//Console.WriteLine(IsValidPassword("111122"));
var count = 0;
for (var i = 109165; i <= 576723; i++)
{
if (IsValidPassword(i.ToString()))
count++;
}
Console.WriteLine(count);
}
private static bool IsValidPassword(string password)
{
var digits = password.ToCharArray();
var sortedDigits = password.ToCharArray().OrderBy(c => c);
if (!digits.SequenceEqual(sortedDigits))
return false;
var hasDouble = false;
var index = 0;
var letter = digits[0];
while (index < 6)
{
var count = 1;
while (index < 5 && digits[index + 1] == letter)
{
count++;
index++;
}
if (count == 2)
{
hasDouble = true;
break;
}
index++;
if (index < 6)
letter = digits[index];
}
return hasDouble;
}
}
}

3
Program.cs
View File

@@ -6,7 +6,8 @@
{
//Day1.Execute();
//Day2.Execute();
Day3.Execute();
//Day3.Execute();
Day4.Execute();
}
}
}