static void Main()
{
// Shuffle
var collectionToShuffle = new List <int> {
1, 2, 3, 4, 5, 6, 7, 8, 9
};
var shuffler = new Shuffler <int>();
Console.WriteLine($"Collection before shuffle -> {string.Join(", ", collectionToShuffle)}");
shuffler.Shuffle(collectionToShuffle);
Console.WriteLine($"Collection after shuffle -> {string.Join(", ", collectionToShuffle)}");
var collectionToSearch = new List <int> {
-36, 1, 16, 42, 278, 301
};
Console.WriteLine();
Console.WriteLine($"Collection to search -> [{string.Join(", ", collectionToSearch)}]");
// Binary Search
var binarySearcher = new BinarySearcher <int>();
int binarySearcherIndex = binarySearcher.Search(301, collectionToSearch);
Console.WriteLine($"Binary search, searching for {301} -> index[{binarySearcherIndex}]");
// Linear Search
var linearSearcher = new LinearSearcher <int>();
int linearSearcherIndex = linearSearcher.Search(42, collectionToSearch);
Console.WriteLine($"Linear search, searching for {42} -> index[{linearSearcherIndex}]");
}
public static void FindIndex_ArrayEmpty_MinusOneReturned([Random(100)] int itemToSearch)
{
// Arrange
var searcher = new LinearSearcher <int>();
var inputArray = new int[0];
// Act
var actualIndex = searcher.FindIndex(inputArray, itemToSearch);
// Assert
Assert.AreEqual(-1, actualIndex);
}
public void ShouldReturnCorrectIndexIfElementDoesNotExists()
{
var collection = new List <int> {
-1, 10, 98, 103, 1067, 1069
};
var binarySearcher = new LinearSearcher <int>();
int actualIndex = binarySearcher.Search(1, collection);
int expectedIndex = -1;
Assert.AreEqual(expectedIndex, actualIndex);
}
public static void FindIndex_MissingItem_MinusOneRetured([Random(0, 1000, 100)] int maxLimit, [Random(-100, 1100, 10)] int missingItem)
{
// Arrange
var searcher = new LinearSearcher <int>();
var random = Randomizer.CreateRandomizer();
var inputArray = Enumerable.Range(0, maxLimit).Select(x => random.Next(0, 1000)).Where(x => x != missingItem).OrderBy(x => x).ToArray();
// Act
var actualIndex = searcher.FindIndex(inputArray, missingItem);
// Assert
Assert.AreEqual(-1, actualIndex);
}
public static void FindIndex_CorrectItemInList_CorrectIndex([Random(1, 1000, 100)] int maxLimit)
{
//Arrange
var searcher = new LinearSearcher <int>();
var randomizer = Randomizer.CreateRandomizer();
var inputArray = Enumerable.Range(0, maxLimit).Select(t => randomizer.Next(0, 1000)).OrderBy(t => t).ToArray();
var selectedIndex = randomizer.Next(0, maxLimit);
//Act
var actualIndex = searcher.FindIndex(inputArray, inputArray[selectedIndex]);
//Assert
Assert.AreEqual(inputArray[selectedIndex], inputArray[actualIndex]);
}
public static void FindIndex_NullArray_MinusOneReturned([Random(100)] int itemToSearch)
{
//Arrange
var searcher = new LinearSearcher <int>();
var randomizer = Randomizer.CreateRandomizer();
int[] inputArray = null;
//Act
var actualIndex = searcher.FindIndex(inputArray, itemToSearch);
//Assert
Assert.AreEqual(-1, actualIndex);
}