Skip to content

[Hacker Rank] Interview Preparation Kit: Miscellaneous: Flipping bits… #228

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Jul 21, 2025
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Original file line number Diff line number Diff line change
@@ -0,0 +1,14 @@
// @link Problem definition [[docs/hackerrank/interview_preparation_kit/miscellaneous/flipping-bits.md]]

namespace algorithm_exercises_csharp.hackerrank.interview_preparation_kit.miscellaneous;

using System.Diagnostics.CodeAnalysis;
using System.Text;

public static class FlippingBitsAlternative
{
public static long flippingBits(long n)
{
return ~n & 0xFFFFFFFF; // Use bitwise NOT and mask to ensure 32 bits
}
}
Original file line number Diff line number Diff line change
@@ -0,0 +1,54 @@
namespace algorithm_exercises_csharp_test.hackerrank.interview_preparation_kit.miscellaneous;

using algorithm_exercises_csharp_test.common;
using algorithm_exercises_csharp.hackerrank.interview_preparation_kit.miscellaneous;

[TestClass]
public class FlippingBitsAlternativeTest
{
public class FlippingBitsAlternativeTestCaseTest(long input, long answer)
{
public long Input { get; } = input;
public long Answer { get; } = answer;
}

public class FlippingBitsAlternativeTestCase(string title, List<FlippingBitsAlternativeTestCaseTest> tests)
{
public string Title { get; } = title;
public List<FlippingBitsAlternativeTestCaseTest> Tests { get; } = tests;
}

private List<FlippingBitsAlternativeTestCase> testCases { get; set; } = default!;

[TestInitialize]
public void testInitialize()
{
testCases = JsonLoader.resourceLoad<List<FlippingBitsAlternativeTestCase>>(
"hackerrank/interview_preparation_kit/miscellaneous/flipping_bits.testcases.json"
) ?? [];
}

[TestMethod]
public void testFlippingBitsAlternative()
{
long result;

foreach (FlippingBitsAlternativeTestCase tests in testCases)
{
foreach (FlippingBitsAlternativeTestCaseTest test in tests.Tests)
{
result = FlippingBitsAlternative.flippingBits(test.Input);
Assert.AreEqual(
test.Answer,
result,
string.Format(
System.Globalization.CultureInfo.InvariantCulture,
"FlippingBitsAlternative.flippingBits({0}) => must be: {1}",
test.Input,
test.Answer
)
);
}
}
}
}