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225. Implement Stack using Queues

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Пытков Роман
2024-01-30 23:36:49 +03:00
parent 8b40248caf
commit 66ea6b80f4
4 changed files with 70 additions and 0 deletions
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11
225. Implement Stack using Queues/225. Implement Stack using Queues.csproj Normal file
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<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net8.0</TargetFramework>
<RootNamespace>_225._Implement_Stack_using_Queues</RootNamespace>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>

50
225. Implement Stack using Queues/MyStack.cs Normal file
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namespace _225._Implement_Stack_using_Queues;
public class MyStack
{
private Queue<int> _queue = new Queue<int>(256);
private int? _lastNum = null;
public MyStack()
{
}
public void Push(int x)
{
if (_lastNum == null)
{
_lastNum = x;
return;
}
int count = _queue.Count;
_queue.Enqueue(_lastNum.Value);
_lastNum = x;
while (count-- > 0)
_queue.Enqueue(_queue.Dequeue());
}
public int Pop()
{
if (_lastNum != null)
{
int res = _lastNum.Value;
_lastNum = null;
return res;
}
return _queue.Dequeue();
}
public int Top()
{
if (_lastNum != null)
return _lastNum.Value;
return _queue.Peek();
}
public bool Empty()
{
return _lastNum == null && _queue.Count == 0;
}
}

3
225. Implement Stack using Queues/Program.cs Normal file
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// See https://aka.ms/new-console-template for more information
Console.WriteLine("Hello, World!");

6
Leetcode.sln
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@@ -163,6 +163,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "8. String to Integer (atoi)
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "15. 3Sum", "15. 3Sum\15. 3Sum.csproj", "{4FAFB0B1-A240-44B9-8305-3CA7FED8AE3C}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "225. Implement Stack using Queues", "225. Implement Stack using Queues\225. Implement Stack using Queues.csproj", "{4DF0467F-C3C9-4F92-9EE7-D21AD30F559D}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Any CPU = Debug|Any CPU
@@ -489,6 +491,10 @@ Global
{4FAFB0B1-A240-44B9-8305-3CA7FED8AE3C}.Debug|Any CPU.Build.0 = Debug|Any CPU
{4FAFB0B1-A240-44B9-8305-3CA7FED8AE3C}.Release|Any CPU.ActiveCfg = Release|Any CPU
{4FAFB0B1-A240-44B9-8305-3CA7FED8AE3C}.Release|Any CPU.Build.0 = Release|Any CPU
{4DF0467F-C3C9-4F92-9EE7-D21AD30F559D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{4DF0467F-C3C9-4F92-9EE7-D21AD30F559D}.Debug|Any CPU.Build.0 = Debug|Any CPU
{4DF0467F-C3C9-4F92-9EE7-D21AD30F559D}.Release|Any CPU.ActiveCfg = Release|Any CPU
{4DF0467F-C3C9-4F92-9EE7-D21AD30F559D}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE