/// <summary>
/// Clears the undo and redo stacks, clears IsStateChanged flag, considers the current state to be the original state.
/// </summary>
public void Reset()
{
_undoStack.Clear();
GetState(out T currentState);
_currentState = new StateRecord <T> {
State = currentState
};
_redoStack.Clear();
ClearIsStateChangedFlag();
ClearStackInvoked?.Invoke(this, new EventArgs());
}
public void ClearTest()
{
for (var i = 0; i < 100; ++i)
{
_stack.Push(i);
}
int expectedCount = 0;
_stack.Clear();
int actualCount = _stack.Count;
Assert.AreEqual(expectedCount, actualCount);
}
// Implement the IStack<T> interface.
public void Clear()
{
lock (SyncRoot)
{
stack.Clear();
}
}
public IEnumerable <TLink> Walk(TLink sequence)
{
_stack.Clear();
var element = sequence;
if (IsElement(element))
{
yield return(element);
}
else
{
while (true)
{
if (IsElement(element))
{
if (_stack.IsEmpty)
{
break;
}
element = _stack.Pop();
foreach (var output in WalkContents(element))
{
yield return(output);
}
element = GetNextElementAfterPop(element);
}
else
{
_stack.Push(element);
element = GetNextElementAfterPush(element);
}
}
}
}
static void TestStack(IStack <int> stack)
{
Console.WriteLine("should be true:{0}", stack.IsEmpty());
stack.Push(1);
stack.Push(2);
stack.Push(3);
Console.WriteLine("should be false:{0}", stack.IsEmpty());
Console.WriteLine("should be 3:{0}", stack.Top());
Console.WriteLine("should be 3:{0}", stack.Pop());
Console.WriteLine("should be 2:{0}", stack.Top());
stack.Clear();
Console.WriteLine("should be true:{0}", stack.IsEmpty());
DataStructures.Stack.StackLL <int> stackll = new DataStructures.Stack.StackLL <int>();
Console.WriteLine("should be true:{0}", stackll.IsEmpty());
stackll.Push(1);
stackll.Push(2);
stackll.Push(3);
Console.WriteLine("should be false:{0}", stackll.IsEmpty());
Console.WriteLine("should be 3:{0}", stackll.Top());
Console.WriteLine("should be 3:{0}", stackll.Pop());
Console.WriteLine("should be 2:{0}", stackll.Top());
stackll.Clear();
Console.WriteLine("should be true:{0}", stackll.IsEmpty());
Console.WriteLine();
}
public void Stack_Clear_CountMustBeZeroAfterClear(IStack<int> stack)
{
const int countOfElement = 0;
foreach (var element in MassOfNumber)
stack.Push(element);
stack.Clear();
var result = stack.Count;
Assert.Equal(countOfElement, result);
}
public int Calculate(string expression)
{
_stack.Clear();
var tokens = expression.Split(' ');
foreach (var token in tokens)
{
if (int.TryParse(token, out int number))
{
_stack.Push(number);
}
else
{
try
{
int right = _stack.Pop();
int left = _stack.Pop();
int result = CalcBinary(left, right, token);
_stack.Push(result);
}
catch (EmptyStackException e)
{
throw new InvalidExpressionException(
"Неверное число операторов в выражении", e
);
}
catch (DivideByZeroException e)
{
throw new DivideByZeroException(
"В выражении присутсвует деление на ноль", e
);
}
catch (InvalidOperationException e)
{
throw new InvalidExpressionException(
"Неверный оператор!", e
);
}
}
}
int value = _stack.Pop();
if (!_stack.IsEmpty())
{
throw new InvalidExpressionException(
"Неверное число операторов в выражении"
);
}
return(value);
}
public void TestClear()
{
InitForTest();
Assert.AreEqual(5, stack.Count);
stack.Clear();
Assert.AreEqual(0, stack.Count);
Assert.ThrowsException <InvalidOperationException>(() => stack.Pop());
Assert.ThrowsException <InvalidOperationException>(() => stack.Peek());
stack.Push(5);
Assert.AreEqual(5, stack.Pop());
}
public void Stack_Clear_CountMustBeZeroAfterClear(IStack <int> stack)
{
const int countOfElement = 0;
foreach (var element in MassOfNumber)
{
stack.Push(element);
}
stack.Clear();
var result = stack.Count;
Assert.AreEqual(countOfElement, result);
}
private void IntStackTestCopyTo(IStack <int> st)
{
int[] arr = { 1, 2, 3, 4, 5 };
int[] arr_to_copy = new int[5];
arr_to_copy[0] = 1;
arr_to_copy[4] = 5;
st.Clear();
st.Push(4);
st.Push(3);
st.Push(2);
st.CopyTo(arr_to_copy, 1);
Assert.AreEqual(arr, arr_to_copy);
st.Push(6);
var ex = Assert.Throws <ArgumentException>(() => st.CopyTo(arr_to_copy, 1));
Assert.That(ex.Message, Is.EqualTo("The number of elements in the source Stack<T> is greater than the available space from arrayIndex to the end of the destination array."));
}
public void ExecuteCommand(ICommand command)
{
var saveToHistory = command.Execute();
if (saveToHistory)
{
var previousPositionOfSpace = board.BlankPosition;
var memento = new BoardDifference
{
PositionOfSpace = board.BlankPosition,
PreviousPositionOfSpace = previousPositionOfSpace
};
history.Push(memento);
}
else
{
history.Clear();
}
}
private void StringStackTest(IStack <string> st)
{
st.Push("to");
st.Push("be");
st.Push("or");
st.Push("not");
Assert.AreEqual("not", st.Peek());
Assert.AreEqual("not", st.Pop());
Assert.AreEqual(3, st.Count);
var sb = new StringBuilder();
foreach (string item in st)
{
sb.Append(item).Append(" ");
}
Assert.AreEqual("or be to ", sb.ToString());
Stack <string> st0 = new Stack <string>(st);
Assert.AreEqual("to", st0.Pop());
st.Clear();
Assert.IsTrue(st.IsEmpty);
}
/// <summary> /// Clears the observable stack. /// </summary> public void Clear() => internalStack.Clear();
public void Clear()
{
_undoStack.Clear();
_redoStack.Clear();
}
public T Push(T item)
{
_redoStack.Clear();
return(_undoStack.Push(item));
}
public void Clear()
{
_stack.Clear();
}
public StackCalc(IStack stack)
{
_stack = stack;
_stack.Clear();
}
public void ClearTest(IStack stack)
{
stack.Push(5);
stack.Clear();
Assert.IsTrue(stack.IsEmpty());
}
/// <summary>
/// Конструктор, создающий экземпляр класса
/// </summary>
/// <param name="chosenStack">Класс, реализующий интерфейс стека</param>
public StackCalc(IStack chosenStack)
{
stack = chosenStack;
stack.Clear();
}
public static (bool, double) Calculate(string postfixExpression, IStack stack)
{
string number = string.Empty;
foreach (char symbol in postfixExpression)
{
if (char.IsDigit(symbol))
{
number = string.Concat(number, char.ToString(symbol));
continue;
}
if (number.Length > 0)
{
stack.Push(double.Parse(number));
number = string.Empty;
continue;
}
if (symbol == ' ')
{
continue;
}
switch (symbol)
{
case '+':
case '-':
case '*':
case '/':
if (stack.IsEmpty())
{
return(false, 0);
}
double topValue = stack.Pop();
if (stack.IsEmpty() || (symbol == '/' && Math.Abs(topValue - 0) < 0.00001))
{
stack.Clear();
return(false, 0);
}
stack.Push(topValue);
PerformOperation(symbol, stack);
break;
default:
stack.Clear();
return(false, 0);
}
}
if (stack.IsEmpty())
{
return(false, 0);
}
var result = stack.Pop();
if (stack.IsEmpty())
{
return(true, result);
}
stack.Clear();
return(false, 0);
}
private void ClearCheck(IStack stack)
{
stack.Push(5);
stack.Clear();
Assert.AreEqual(true, stack.IsEmpty());
}
public void Clear()
{
Chess.ObserveOperationCall(impl, "Clear");
impl.Clear();
Chess.ObserveOperationReturn();
}
Task IHistoryStack.Clear()
{
return(_stack.Clear());
}
public void Initialize()
{
stack.Clear();
calculator = new Calculator(stack);
str = "";
}
