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Completed day 2

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This commit is contained in:
Rob Stoffelen 2024-12-02 09:16:36 +01:00
parent 2c0ba40a24
commit 9e3c218ffe
1 changed files with 35 additions and 64 deletions
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99
AdventOfCode.Solutions/2024/Day 02/Day02.cs
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@ -18,76 +18,47 @@ namespace AdventOfCode.Solutions._2024
}
//2
//
public async Task<string> GetSolutionPart1()
{
//_inputReader.SetSampleInput(true);
string[] data = await _inputReader.ReadAsArrayString();
int save = data.Length;
foreach (string line in data)
{
int[] intData = line.Split(' ').Select(int.Parse).ToArray();
bool isIncrease = intData[1] < intData[0];
for (int index = 1; index < intData.Length; index++)
{
int trueDiff = intData[index - 1] - intData[index];
int diff = Math.Abs(trueDiff);
if (diff < 1 || diff > 3)
{
save--;
break;
}
//230
public async Task<string> GetSolutionPart1()
=> (await _inputReader.ReadAsArrayString())
.Select(ParselineToReports)
.Where(reports => AreReportsSave(reports, false))
.Count()
.ToString();
if (isIncrease && trueDiff < 0)
{
save--;
break;
}
else if (!isIncrease && trueDiff > 0)
{
save--;
break;
}
//4
//301
public async Task<string> GetSolutionPart2() => (await _inputReader.ReadAsArrayString())
.Select(ParselineToReports)
.Where(reports => AreReportsSave(reports, true))
.Count()
.ToString();
private static bool AreReportsSave(int[] reports, bool tolarance = false)
{
bool isIncrease = reports[1] < reports[0];
for (int index = 1; index < reports.Length; index++)
{
int trueDiff = reports[index - 1] - reports[index];
int diff = Math.Abs(trueDiff);
if (diff < 1 || diff > 3)
{
return tolarance && HasSafeCombo(reports);
}
if ((isIncrease && trueDiff < 0) || (!isIncrease && trueDiff > 0))
{
return tolarance && HasSafeCombo(reports);
}
}
return save.ToString();
return true;
}
//
//
public async Task<string> GetSolutionPart2()
{
string[] data = await _inputReader.ReadAsArrayString();
int save = data.Length;
foreach (string line in data)
{
int[] intData = line.Split(' ').Select(int.Parse).ToArray();
bool isIncrease = intData[1] < intData[0];
for (int index = 1; index < intData.Length; index++)
{
int trueDiff = intData[index - 1] - intData[index];
int diff = Math.Abs(trueDiff);
if (diff < 1 || diff > 3)
{
save--;
break;
}
private static bool HasSafeCombo(int[] reports)
=> reports.Select((_, i) => SkipReport(reports, i)).Any(reports => AreReportsSave(reports));
if (isIncrease && trueDiff < 0)
{
save--;
break;
}
else if (!isIncrease && trueDiff > 0)
{
save--;
break;
}
}
}
return save.ToString();
}
private static int[] SkipReport(int[] reports, int index) => reports.Where((_, i) => i != index).ToArray();
private static int[] ParselineToReports(string line) => line.Split(' ').Select(int.Parse).ToArray();
}
}