mlemanczyk/even-perfect-numbers-scanner
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Tiny clean and micro-optimizations

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Marek Lemańczyk committed 2025-09-19 00:55:50 +02:00
1 parent f3878f3480
commit ab80a55457
1 file changed
+16 -21
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EvenPerfectBitScanner.ResultsParser/Program.cs
+16 -21
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@@ -62,10 +62,7 @@ internal static class Program
} }
} }
private static bool IsHelpOption(string value) private static bool IsHelpOption(string value) => HelpOptions.Contains(value);
{
return HelpOptions.Contains(value);
}
private static void PrintHelp() private static void PrintHelp()
{ {
@@ -139,11 +136,11 @@ internal static class Program
return; return;
} }
List<CandidateResult> sortedResults = new(primeResults); List<CandidateResult> sortedResults = [.. primeResults];
BubbleSort(sortedResults); BubbleSort(sortedResults);
List<CandidateResult> passedResults = new(); List<CandidateResult> passedResults = [];
List<CandidateResult> rejectedResults = new(); List<CandidateResult> rejectedResults = [];
for (int i = 0; i < sortedResults.Count; i++) for (int i = 0; i < sortedResults.Count; i++)
{ {
@@ -180,9 +177,9 @@ internal static class Program
string passedOutputPath = BuildOutputPath(inputPath, "sorted-primes-passed-"); string passedOutputPath = BuildOutputPath(inputPath, "sorted-primes-passed-");
string rejectedOutputPath = BuildOutputPath(inputPath, "sorted-primes-rejected-"); string rejectedOutputPath = BuildOutputPath(inputPath, "sorted-primes-rejected-");
WriteCsv(sortedOutputPath, header, Array.Empty<CandidateResult>()); WriteCsv(sortedOutputPath, header, []);
WriteCsv(passedOutputPath, header, Array.Empty<CandidateResult>()); WriteCsv(passedOutputPath, header, []);
WriteCsv(rejectedOutputPath, header, Array.Empty<CandidateResult>()); WriteCsv(rejectedOutputPath, header, []);
} }
private static CandidateResult ParseLine(string line) private static CandidateResult ParseLine(string line)
@@ -268,9 +265,10 @@ internal static class Program
RemoveEntriesBelowPrime(pendingResults, currentPrime); RemoveEntriesBelowPrime(pendingResults, currentPrime);
bool extractedPrime;
while (pendingResults.Count > 0) while (pendingResults.Count > 0)
{ {
bool extractedPrime = ExtractPrimeEntries(pendingResults, primeResults, currentPrime); extractedPrime = ExtractPrimeEntries(pendingResults, primeResults, currentPrime);
if (extractedPrime) if (extractedPrime)
{ {
if (!TryAdvancePrime(primeEnumerator, ref currentPrime, pendingResults)) if (!TryAdvancePrime(primeEnumerator, ref currentPrime, pendingResults))
@@ -372,21 +370,18 @@ internal static class Program
return true; return true;
} }
private static void InsertPendingResult(List<CandidateResult> pendingResults, CandidateResult result) private static void InsertPendingResult(List<CandidateResult> pendingResults, CandidateResult result) => pendingResults.Insert(FindFirstIndexAtLeast(pendingResults, result.P), result);
{
int insertIndex = FindFirstIndexAtLeast(pendingResults, result.P);
pendingResults.Insert(insertIndex, result);
}
private static int FindFirstIndexAtLeast(List<CandidateResult> pendingResults, ulong value) private static int FindFirstIndexAtLeast(List<CandidateResult> pendingResults, ulong value)
{ {
int low = 0; int low = 0,
int high = pendingResults.Count - 1; high = pendingResults.Count - 1,
mid;
while (low <= high) while (low <= high)
{ {
int mid = low + ((high - low) >> 1); mid = low + ((high - low) >> 1);
ulong midValue = pendingResults[mid].P; if (pendingResults[mid].P < value)
if (midValue < value)
{ {
low = mid + 1; low = mid + 1;
continue; continue;