private static void WriteInternmentExample()
{
Console.WriteLine("Examples of internment.");
Console.WriteLine("Without internment:");
var s1 = CustomString.CreateInstance("Hello world".ToCharArray());
Console.WriteLine($"{nameof(s1)} = \"{s1}\" created...");
var s2 = CustomString.CreateInstance("Hello world".ToCharArray());
Console.WriteLine($"{nameof(s2)} = \"{s2}\" created...");
Console.WriteLine($"{nameof(s1)}.Equals({nameof(s2)}) => {s1.Equals(s2)}");
Console.WriteLine($"ReferenceEquals({nameof(s1)},{nameof(s2)}) => {ReferenceEquals(s1, s2)}");
Console.WriteLine();
Console.WriteLine("With internment:");
var s3 = CustomString.CreateInstance("Hello world".ToCharArray());
Console.WriteLine($"{nameof(s3)} = \"{s3}\" created...");
s3 = CustomString.Intern(s3);
Console.WriteLine($"{nameof(s3)} = \"{s3}\" interned...");
var s4 = CustomString.CreateInstance("Hello world".ToCharArray());
Console.WriteLine($"{nameof(s4)} = \"{s4}\" created...");
Console.WriteLine($"{nameof(s3)}.Equals({nameof(s4)}) => {s3.Equals(s4)}");
Console.WriteLine($"ReferenceEquals({nameof(s3)},{nameof(s4)}) => {ReferenceEquals(s3, s4)}");
WriteSeparatorStringsAndAwaitMessage();
}
private static Dictionary <CustomString, int> CalculateStringsFrequencies(CustomString text, bool dependOnRegister, params char[] separators)
{
if (!dependOnRegister)
{
text = text.ReplaceByDelegate(c => char.ToLower(c));
}
Dictionary <CustomString, int> result = new Dictionary <CustomString, int>();
List <char> currentStringSymbols = new List <char>();
for (int i = 0; i < text.Length; i++)
{
if (separators.Contains(text[i]))
{
CustomString str = CustomString.CreateInstance(currentStringSymbols.ToArray());
currentStringSymbols.Clear();
AddStringToFrequencies(result, str);
continue;
}
currentStringSymbols.Add(text[i]);
}
AddStringToFrequencies(result, CustomString.CreateInstance(currentStringSymbols.ToArray()));
return(result);
}
private static void WriteLastIndexOfExamples()
{
Console.WriteLine("Examples of overloads of method \"WriteLastIndexOf\".");
CustomString str = CustomString.CreateInstance("Hello world".ToCharArray());
Console.WriteLine($"{nameof(str)} = CreateInstance(\"{str}\")");
Console.WriteLine($"str.LastIndexOf('l') => {str.LastIndexOf('l')}");
Console.WriteLine($"str.LastIndexOf('k') => {str.LastIndexOf('k')}");
Console.WriteLine($"str.LastIndexOf('w', 6) => {str.LastIndexOf('w', 6)}");
Console.WriteLine($"str.LastIndexOf('w', 8) => {str.LastIndexOf('w', 8)}");
Console.WriteLine($"str.LastIndexOf('w', 3, 4) => {str.LastIndexOf('w', 3, 4)}");
Console.WriteLine($"str.LastIndexOf('w', 3, 2) => {str.LastIndexOf('w', 3, 2)}");
CustomString requiredStr1 = CustomString.CreateInstance("Hello".ToCharArray());
CustomString requiredStr2 = CustomString.CreateInstance("hello".ToCharArray());
CustomString requiredStr3 = CustomString.CreateInstance("rl".ToCharArray());
CustomString requiredStr4 = CustomString.CreateInstance("rld".ToCharArray());
Console.WriteLine($"str.LastIndexOf(\"{requiredStr1}\") => {str.LastIndexOf(requiredStr1)}");
Console.WriteLine($"str.LastIndexOf(\"{requiredStr2}\") => {str.LastIndexOf(requiredStr2)}");
Console.WriteLine($"str.LastIndexOf(\"{requiredStr3}\") => {str.LastIndexOf(requiredStr3)}");
Console.WriteLine($"str.LastIndexOf(\"{requiredStr4}\") => {str.LastIndexOf(requiredStr4)}");
Console.WriteLine($"str.LastIndexOf(\"{requiredStr3}\", 0, 9) => {str.LastIndexOf(requiredStr3, 0, 9)}");
Console.WriteLine($"str.LastIndexOf(\"{requiredStr3}\", 0, 8) => {str.LastIndexOf(requiredStr3, 0, 8)}");
WriteSeparatorStringsAndAwaitMessage();
}
private static void WriteCustomMethodsExamples()
{
Console.WriteLine("Examples of custom methods.");
CustomString str = CustomString.CreateInstance("HeLLo wOrld".ToCharArray());
Console.WriteLine($"{nameof(str)} = CreateInstance(\"{str}\")");
Console.WriteLine($"str.RemoveByPredicate(c => char.IsUpper(c)) => {str.RemoveByPredicate(c => char.IsUpper(c))}");
Console.WriteLine($"str.RemoveByPredicate(c => c == 'L') => {str.RemoveByPredicate(c => c == 'L')}");
Console.WriteLine($"str.ReplaceByDelegate(c => char.ToLower(c)) => {str.ReplaceByDelegate(c => char.ToLower(c))}");
Console.WriteLine($"str.ReplaceByDelegate(c => char.ToLower(c) == 'l' ? '1' : c)) => {str.ReplaceByDelegate(c => char.ToLower(c) == 'l' ? '1' : c)}");
WriteSeparatorStringsAndAwaitMessage();
}
static void Main()
{
Console.WriteLine("Введите текст...");
var text = CustomString.CreateInstance(Console.ReadLine().ToCharArray());
var frequencies = CalculateStringsFrequencies(text, false, separators);
var wordsCount = frequencies.Values.Sum();
Console.WriteLine($"Всего слов: {wordsCount}");
Console.WriteLine();
Console.WriteLine($"{CustomString.CreateInstance("Строка".ToCharArray()).FormatCenter(WORD_LENGTH_FOR_FORMAT)}| Количество | Частота |");
foreach (var kvp in frequencies)
{
Console.WriteLine(
$"{kvp.Key, -WORD_LENGTH_FOR_FORMAT}" +
$"| {CustomString.CreateInstance(kvp.Value.ToString().ToCharArray()).FormatCenter(COUNT_WORDS_FORMAT_LENGTH)} " +
$"| {CustomString.CreateInstance(((kvp.Value + .0) / wordsCount).ToString("0.#####").ToCharArray()).FormatCenter(FREQUENCIES_FORMAT_LENGTH)}" +
$"| ");
}
}
private static void WriteToCharArrayExamples()
{
Console.WriteLine("Examples of overloads of method \"ToCharArray\".");
CustomString str = CustomString.CreateInstance("Hello world".ToCharArray());
Console.WriteLine($"{nameof(str)} = CreateInstance(\"{str}\")");
Console.WriteLine($"str.ToCharArray() => {ArrayToString(str.ToCharArray())}");
Console.WriteLine($"str.ToCharArray(6, 5) => {ArrayToString(str.ToCharArray(6, 5))}");
Console.Write("str.ToCharArray(6, 6) => ");
try
{
Console.Write(ArrayToString(str.ToCharArray(6, 6)));
}
catch (ArgumentOutOfRangeException)
{
Console.Write(nameof(ArgumentOutOfRangeException));
}
finally
{
Console.WriteLine();
}
string ArrayToString(char[] arr)
{
StringBuilder stringBuilder = new StringBuilder();
foreach (var val in arr)
{
stringBuilder.Append($"[{val}] ");
}
return(stringBuilder.ToString());
}
WriteSeparatorStringsAndAwaitMessage();
}
public static CustomString FormatCenter(this CustomString str, int symbolsCount)
{
int offset = Math.Max(symbolsCount - str.Length, 0);
char[] res = new char[Math.Max(str.Length, symbolsCount)];
for (int i = 0; i < offset / 2; i++)
{
res[i] = ' ';
}
for (int i = 0; i < str.Length; i++)
{
res[offset / 2 + i] = str[i];
}
for (int i = offset / 2 + str.Length; i < res.Length; i++)
{
res[i] = ' ';
}
return(CustomString.CreateInstance(res));
}
private static void WriteCreationExample()
{
Console.WriteLine("Examples of creation.");
Console.WriteLine($"CreateInstance(\"Hello world\") = > {CustomString.CreateInstance("Hello world".ToCharArray())}");
Console.WriteLine($"CreateInstance(\"Hello world\", 6, 5) => {CustomString.CreateInstance("Hello world".ToCharArray(), 6, 5)}");
Console.Write("CreateInstance(\"Hello world\", 6, 6) => ");
try
{
Console.Write(CustomString.CreateInstance("Hello world".ToCharArray(), 6, 6));
}
catch (ArgumentOutOfRangeException)
{
Console.Write(nameof(ArgumentOutOfRangeException));
}
finally
{
Console.WriteLine();
}
Console.WriteLine($"CreateInstance('1', 10) => {CustomString.CreateInstance('1', 10)}");
WriteSeparatorStringsAndAwaitMessage();
}
private static void WriteOperationsExample()
{
Console.WriteLine("Examples of operations.");
Test(CustomString.CreateInstance("123".ToCharArray()), CustomString.CreateInstance("1234".ToCharArray()));
Test(CustomString.CreateInstance("aaa".ToCharArray()), CustomString.CreateInstance("aaa".ToCharArray()));
Test(CustomString.CreateInstance("bb".ToCharArray()), CustomString.CreateInstance("azzzzzz".ToCharArray()));
WriteSeparatorStringsAndAwaitMessage();
void Test(CustomString str1, CustomString str2)
{
Console.WriteLine($"{str1} + {str2} => {str1 + str2}");
Console.WriteLine($"{str1} > {str2} => {str1 > str2}");
Console.WriteLine($"{str1} >= {str2} => {str1 >= str2}");
Console.WriteLine($"{str1} < {str2} => {str1 < str2}");
Console.WriteLine($"{str1} <= {str2} => {str1 <= str2}");
Console.WriteLine($"{str1} == {str2} => {str1 == str2}");
Console.WriteLine();
}
}