static void Main()
{
HashTable <string, int> grades = new HashTable <string, int>();
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
grades.Add("Peter", 3);
grades.Add("Maria", 6);
grades["George"] = 5;
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
grades.AddOrReplace("Peter", 33);
grades.AddOrReplace("Tanya", 4);
grades["George"] = 55;
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
Console.WriteLine("Keys: " + string.Join(", ", grades.Keys));
Console.WriteLine("Values: " + string.Join(", ", grades.Values));
Console.WriteLine("Count = " + string.Join(", ", grades.Count));
Console.WriteLine("--------------------");
grades.Remove("Peter");
grades.Remove("George");
grades.Remove("George");
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
Console.WriteLine("ContainsKey[\"Tanya\"] = " + grades.ContainsKey("Tanya"));
Console.WriteLine("ContainsKey[\"George\"] = " + grades.ContainsKey("George"));
Console.WriteLine("Grades[\"Tanya\"] = " + grades["Tanya"]);
Console.WriteLine("--------------------");
}
public void Count_Empty_Add_Remove_ShouldWorkCorrectly()
{
// Arrange
HashTable <string, int> hashTable = new HashTable <string, int>();
// Assert
Assert.AreEqual(0, hashTable.Count);
// Act & Assert
hashTable.Add("Peter", 555);
hashTable.AddOrReplace("Peter", 555);
hashTable.AddOrReplace("Ivan", 555);
Assert.AreEqual(2, hashTable.Count);
// Act & Assert
hashTable.Remove("Peter");
Assert.AreEqual(1, hashTable.Count);
// Act & Assert
hashTable.Remove("Peter");
Assert.AreEqual(1, hashTable.Count);
// Act & Assert
hashTable.Remove("Ivan");
Assert.AreEqual(0, hashTable.Count);
}
static void Main()
{
var grades = new HashTable<string, int>();
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
grades.Add("Peter", 3);
grades.Add("Maria", 6);
grades["George"] = 5;
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
grades.AddOrReplace("Peter", 33);
grades.AddOrReplace("Tanya", 4);
grades["George"] = 55;
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
Console.WriteLine("Keys: " + string.Join(", ", grades.Keys));
Console.WriteLine("Values: " + string.Join(", ", grades.Values));
Console.WriteLine("Count = " + string.Join(", ", grades.Count));
Console.WriteLine("--------------------");
grades.Remove("Peter");
grades.Remove("George");
grades.Remove("George");
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
Console.WriteLine("ContainsKey[\"Tanya\"] = " + grades.ContainsKey("Tanya"));
Console.WriteLine("ContainsKey[\"George\"] = " + grades.ContainsKey("George"));
Console.WriteLine("Grades[\"Tanya\"] = " + grades["Tanya"]);
Console.WriteLine("--------------------");
}
static void Main()
{
string input = Console.ReadLine();
var phonebook = new HashTable<string, string>();
while (input != "search")
{
string[] record = input.Split( new char[] {'-'}, StringSplitOptions.RemoveEmptyEntries);
phonebook.AddOrReplace(record[0], record[1]);
input = Console.ReadLine();
}
input = Console.ReadLine();
while (input != "")
{
if (phonebook.ContainsKey(input))
{
Console.WriteLine("{0} -> {1}", input, phonebook[input]);
}
else
{
Console.WriteLine("Contact {0} does not exist.", input);
}
input = Console.ReadLine();
}
}
public static void Main(string[] args)
{
var phonebook = new HashTable <string, string>();
string line = Console.ReadLine();
while (line != "search")
{
string[] parameters = line.Split(new[] { '-' }, StringSplitOptions.RemoveEmptyEntries);
string name = parameters[0];
string phone = parameters[1];
phonebook.AddOrReplace(name, phone);
line = Console.ReadLine();
}
line = Console.ReadLine();
while (!string.IsNullOrWhiteSpace(line))
{
if (phonebook.ContainsKey(line))
{
Console.WriteLine("{0} -> {1}", line, phonebook[line]);
}
else
{
Console.WriteLine("Contact {0} does not exist.", line);
}
line = Console.ReadLine();
}
}
private static void Phonebook()
{
var text = Console.ReadLine();
var phonebook = new HashTable <string, string>();
while (text != "search")
{
var info = text.Split('-');
var name = info[0];
var number = info[1];
phonebook.AddOrReplace(name, number);
text = Console.ReadLine();
}
var searchedName = Console.ReadLine();
while (!string.IsNullOrEmpty(searchedName))
{
if (phonebook.ContainsKey(searchedName))
{
Console.WriteLine($"{searchedName} -> {phonebook[searchedName]}");
}
else
{
Console.WriteLine($"Contact {searchedName} does not exist.");
}
searchedName = Console.ReadLine();
}
}
static void Main()
{
// Arrange
var hashTable = new HashTable <DateTime, string>();
var date = new DateTime(1995, 7, 18);
hashTable.Add(date, "Some value");
// Act
var containsKey = hashTable.ContainsKey(date);
///////////////////////////////////////////////////
var grades = new HashTable <string, int>();
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
grades.Add("Peter", 3);
grades.Add("Maria", 6);
grades["George"] = 5;
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
grades.AddOrReplace("Peter", 33);
grades.AddOrReplace("Tanya", 4);
grades["George"] = 55;
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
Console.WriteLine("Keys: " + string.Join(", ", grades.Keys));
Console.WriteLine("Values: " + string.Join(", ", grades.Values));
Console.WriteLine("Count = " + string.Join(", ", grades.Count));
Console.WriteLine("--------------------");
grades.Remove("Peter");
grades.Remove("George");
grades.Remove("George");
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
Console.WriteLine("ContainsKey[\"Tanya\"] = " + grades.ContainsKey("Tanya"));
Console.WriteLine("ContainsKey[\"George\"] = " + grades.ContainsKey("George"));
Console.WriteLine("Grades[\"Tanya\"] = " + grades["Tanya"]);
Console.WriteLine("--------------------");
}
static void Main()
{
// Arrange
var hashTable = new HashTable<DateTime, string>();
var date = new DateTime(1995, 7, 18);
hashTable.Add(date, "Some value");
// Act
var containsKey = hashTable.ContainsKey(date);
///////////////////////////////////////////////////
var grades = new HashTable<string, int>();
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
grades.Add("Peter", 3);
grades.Add("Maria", 6);
grades["George"] = 5;
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
grades.AddOrReplace("Peter", 33);
grades.AddOrReplace("Tanya", 4);
grades["George"] = 55;
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
Console.WriteLine("Keys: " + string.Join(", ", grades.Keys));
Console.WriteLine("Values: " + string.Join(", ", grades.Values));
Console.WriteLine("Count = " + string.Join(", ", grades.Count));
Console.WriteLine("--------------------");
grades.Remove("Peter");
grades.Remove("George");
grades.Remove("George");
Console.WriteLine("Grades:" + string.Join(",", grades));
Console.WriteLine("--------------------");
Console.WriteLine("ContainsKey[\"Tanya\"] = " + grades.ContainsKey("Tanya"));
Console.WriteLine("ContainsKey[\"George\"] = " + grades.ContainsKey("George"));
Console.WriteLine("Grades[\"Tanya\"] = " + grades["Tanya"]);
Console.WriteLine("--------------------");
}
public void AddOrReplace_WithDuplicates_ShouldWorkCorrectly()
{
// Arrange
var hashTable = new HashTable<string, int>();
// Act
hashTable.AddOrReplace("Peter", 555);
hashTable.AddOrReplace("Maria", 999);
hashTable.AddOrReplace("Maria", 123);
hashTable.AddOrReplace("Maria", 6);
hashTable.AddOrReplace("Peter", 5);
// Assert
var expectedElements = new KeyValue<string, int>[]
{
new KeyValue<string, int>("Peter", 5),
new KeyValue<string, int>("Maria", 6)
};
var actualElements = hashTable.ToList();
CollectionAssert.AreEquivalent(expectedElements, actualElements);
}
public void AddOrReplace_WithDuplicates_ShouldWorkCorrectly()
{
// Arrange
HashTable <string, int> hashTable = new HashTable <string, int>();
// Act
hashTable.AddOrReplace("Peter", 555);
hashTable.AddOrReplace("Maria", 999);
hashTable.AddOrReplace("Maria", 123);
hashTable.AddOrReplace("Maria", 6);
hashTable.AddOrReplace("Peter", 5);
// Assert
KeyValue <string, int>[] expectedElements =
{
new KeyValue <string, int>("Peter", 5),
new KeyValue <string, int>("Maria", 6)
};
List <KeyValue <string, int> > actualElements = hashTable.ToList();
CollectionAssert.AreEquivalent(expectedElements, actualElements);
}
public static void Main()
{
HashTable <string, string> phonebook = new HashTable <string, string>();
Queue <string> output = new Queue <string>();
string input = Console.ReadLine();
while (input != "search")
{
string name = input.Split('-')[0];
string phoneNumber = input.Split('-')[1];
phonebook.AddOrReplace(name, phoneNumber);
input = Console.ReadLine();
}
input = Console.ReadLine();
while (input != string.Empty)
{
KeyValue <string, string> contact = phonebook.Find(input);
if (contact == null)
{
output.Enqueue(string.Format("Contact {0} does not exist.", input));
}
else
{
output.Enqueue(string.Format("{0} -> {1}", contact.Key, contact.Value));
}
input = Console.ReadLine();
}
foreach (string result in output)
{
Console.WriteLine(result);
}
}
public void Count_Empty_Add_Remove_ShouldWorkCorrectly()
{
// Arrange
var hashTable = new HashTable<string, int>();
// Assert
Assert.AreEqual(0, hashTable.Count);
// Act & Assert
hashTable.Add("Peter", 555);
hashTable.AddOrReplace("Peter", 555);
hashTable.AddOrReplace("Ivan", 555);
Assert.AreEqual(2, hashTable.Count);
// Act & Assert
hashTable.Remove("Peter");
Assert.AreEqual(1, hashTable.Count);
// Act & Assert
hashTable.Remove("Peter");
Assert.AreEqual(1, hashTable.Count);
// Act & Assert
hashTable.Remove("Ivan");
Assert.AreEqual(0, hashTable.Count);
}
public bool AddOrReplace(TKey key, TValue value)
{
return(table.AddOrReplace(key, value));
}
