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string-processing-system [PIOL] #29

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122c6b9
Create Program.cs para mogana
DigBick8 Feb 28, 2026
fef9d79
Create StringService.cs mga calls
DigBick8 Feb 28, 2026
8b43cae
Create StringView.cs humana
DigBick8 Feb 28, 2026
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13 changes: 13 additions & 0 deletions StringProcessingApp/Program.cs
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Original file line number Diff line number Diff line change
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using StringProcessingApp.Views;

namespace StringProcessingApp
{
class Program
{
static void Main(string[] args)
{
StringView view = new StringView();
view.Run();
}
}
}
63 changes: 63 additions & 0 deletions StringProcessingApp/Services/StringService.cs
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namespace StringProcessingApp.Services
{
public class StringService
{
private string originalText = "";
private string currentText = "";

public void SetText(string text)
{
originalText = text;
currentText = text;
}

public string GetText()
{
return currentText;
}

public string ToUpperCase()
{
currentText = currentText.ToUpper();
return currentText;
}

public string ToLowerCase()
{
currentText = currentText.ToLower();
return currentText;
}

public int CountCharacters()
{
return currentText.Length;
}

public bool ContainsWord(string word)
{
return currentText.Contains(word);
}

public string ReplaceWord(string oldWord, string newWord)
{
currentText = currentText.Replace(oldWord, newWord);
return currentText;
}

public string ExtractSubstring(int startIndex, int length)
{
return currentText.Substring(startIndex, length);
}

public string TrimSpaces()
{
currentText = currentText.Trim();
return currentText;
}

public void ResetText()
{
currentText = originalText;
}
}
}
145 changes: 145 additions & 0 deletions StringProcessingApp/Views/StringView.cs
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using System;
using StringProcessingApp.Services;

namespace StringProcessingApp.Views
{
public class StringView
{
private StringService service = new StringService();

public void Run()
{
bool running = true;

while (running)
{
DisplayMenu();
Console.Write("Choose an option: ");
string choice = Console.ReadLine();

Console.WriteLine();

switch (choice)
{
case "1":
EnterText();
break;

case "2":
Console.WriteLine("Current Text: " + service.GetText());
break;

case "3":
Console.WriteLine("UPPERCASE: " + service.ToUpperCase());
break;

case "4":
Console.WriteLine("lowercase: " + service.ToLowerCase());
break;

case "5":
Console.WriteLine("Character Count: " + service.CountCharacters());
break;

case "6":
CheckContains();
break;

case "7":
ReplaceWord();
break;

case "8":
ExtractSubstring();
break;

case "9":
Console.WriteLine("Trimmed Text: " + service.TrimSpaces());
break;

case "10":
service.ResetText();
Console.WriteLine("Text has been reset.");
break;

case "11":
running = false;
break;

default:
Console.WriteLine("Invalid option. Try again.");
break;
}

Console.WriteLine();
}
}

private void DisplayMenu()
{
Console.WriteLine("---Menu Options---");
Console.WriteLine("1. Enter Text");
Console.WriteLine("2. View Current Text");
Console.WriteLine("3. Convert to UPPERCASE");
Console.WriteLine("4. Convert to lowercase");
Console.WriteLine("5. Count Characters");
Console.WriteLine("6. Check if Contains Word");
Console.WriteLine("7. Replace Word");
Console.WriteLine("8. Extract Substring");
Console.WriteLine("9. Trim Spaces");
Console.WriteLine("10. Reset Text");
Console.WriteLine("11. Exit");
}

private void EnterText()
{
Console.Write("Enter text: ");
string input = Console.ReadLine();
service.SetText(input);
Console.WriteLine("Text saved.");
}

private void CheckContains()
{
Console.Write("Enter word to search: ");
string word = Console.ReadLine();

bool result = service.ContainsWord(word);

if (result)
Console.WriteLine("The text contains the word.");
else
Console.WriteLine("The text does NOT contain the word.");
}

private void ReplaceWord()
{
Console.Write("Enter word to replace: ");
string oldWord = Console.ReadLine();

Console.Write("Enter new word: ");
string newWord = Console.ReadLine();

Console.WriteLine("Updated Text: " + service.ReplaceWord(oldWord, newWord));
}

private void ExtractSubstring()
{
try
{
Console.Write("Enter start index: ");
int start = int.Parse(Console.ReadLine());

Console.Write("Enter length: ");
int length = int.Parse(Console.ReadLine());

string result = service.ExtractSubstring(start, length);
Console.WriteLine("Extracted Substring: " + result);
}
catch
{
Console.WriteLine("Invalid index or length.");
}
}
}
}