rpuzonas/algoru-labs
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add lab3

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This commit is contained in:
Rokas Puzonas 2023-05-22 00:44:04 +03:00
parent 8f4473f8fa
commit 8fe4234c82
3 changed files with 125 additions and 1 deletions
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10
Lab3/Lab3.csproj Normal file
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@ -0,0 +1,10 @@
<Project Sdk="Microsoft.NET.Sdk">
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>
</Project>

108
Lab3/Program.cs Normal file
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@ -0,0 +1,108 @@
using System.Reflection.Metadata.Ecma335;
namespace Lab3
{
internal class Program
{
public static long methodToAnalysis1(int[] arr)
{
long n = arr.Length;
long k = n;
for (int i = 0; i < n; i++)
{
if (arr[i] / 7 == 0)
{
k -= 2;
}
else
{
k += 3;
}
}
if (arr[0] > 0)
{
for (int i = 0; i < n * n; i++)
{
if (arr[0] > 0)
{
k += 3;
}
}
}
return k;
}
public static long methodToAnalysis2(int n, int[] arr)
{
long k = 0;
for (int i = 0; i < n; i++)
{
k += arr[i] + FF4(i, arr);
}
return k;
}
public static long FF4(int n, int[] arr)
{
if (n > 0 && arr.Length > n && arr[n] < 0)
{
return FF4(n / 2, arr) + FF4(n / 3, arr);
}
return n;
}
public static int knapsack(int weightLimit, int n, int[] weights, int[] values)
{
if (n == 1)
{
return weights[0] <= weightLimit ? values[0] : 0;
}
if (weights[n - 1] > weightLimit)
{
return knapsack(weightLimit, n - 1, weights, values);
}
int case1 = knapsack(weightLimit - weights[n - 1], n - 1, weights, values) + values[n - 1];
int case2 = knapsack(weightLimit, n - 1, weights, values);
return Math.Max(case1, case2);
}
public static int knapsackDP(int weightLimit, int n, int[] weights, int[] values)
{
int[,] memo = new int[n + 1, weightLimit +1];
for (int i = 1; i <= n; i++)
{
for (int w = 1; w <= weightLimit; w++)
{
if (weights[i-1] <= w)
{
memo[i, w] = Math.Max(values[i - 1] + memo[i - 1, w - weights[i - 1]], memo[i - 1, w]);
}
else
{
memo[i, w] = memo[i - 1, w];
}
}
}
return memo[n, weightLimit];
}
static void Main(string[] args)
{
int weightLimit = 15;
int[] weights = new int[]{ 7, 2, 1, 9 };
int[] values = new int[]{ 5, 4, 7, 2 };
int n = weights.Length;
Console.WriteLine(knapsackDP(weightLimit, n, weights, values));
Console.WriteLine(knapsack(weightLimit, n, weights, values));
}
}
}

8
Labs.sln
View File

@ -5,7 +5,9 @@ VisualStudioVersion = 17.1.32328.378
MinimumVisualStudioVersion = 10.0.40219.1
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Lab1", "Lab1\Lab1.csproj", "{497767A1-722A-4F48-86E5-C2AE6E0B9C9A}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lab2", "Lab2\Lab2.csproj", "{6AF5D775-08B9-4D4F-9E2E-116C551D0581}"
Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Lab2", "Lab2\Lab2.csproj", "{6AF5D775-08B9-4D4F-9E2E-116C551D0581}"
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lab3", "Lab3\Lab3.csproj", "{C3128C1D-C1F7-476A-808F-1A3FE5E848FA}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
@ -21,6 +23,10 @@ Global
{6AF5D775-08B9-4D4F-9E2E-116C551D0581}.Debug|Any CPU.Build.0 = Debug|Any CPU
{6AF5D775-08B9-4D4F-9E2E-116C551D0581}.Release|Any CPU.ActiveCfg = Release|Any CPU
{6AF5D775-08B9-4D4F-9E2E-116C551D0581}.Release|Any CPU.Build.0 = Release|Any CPU
{C3128C1D-C1F7-476A-808F-1A3FE5E848FA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
{C3128C1D-C1F7-476A-808F-1A3FE5E848FA}.Debug|Any CPU.Build.0 = Debug|Any CPU
{C3128C1D-C1F7-476A-808F-1A3FE5E848FA}.Release|Any CPU.ActiveCfg = Release|Any CPU
{C3128C1D-C1F7-476A-808F-1A3FE5E848FA}.Release|Any CPU.Build.0 = Release|Any CPU
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE