/**
* Returns an string representation of the elements in the stack satisfying the given predicate.
* {@code predicate}
*
* @param predicate
* @return String representation of the elements
*/
public String printStack(Predicate<T> predicate) {
StringBuilder builder = new StringBuilder();
for (StackNode<T> tempElement = startElement;
tempElement != null;
tempElement = tempElement.getNext()) {
if (predicate.apply(tempElement.getData())) {
builder.append(tempElement.getData().toString());
builder.append("\n");
}
}
return builder.toString();
}
/**
* Removes the topmost element of the stock.
*
* @return Topmost element in the stack
*/
public T pop() {
// Store first node in temp and retrieve new node
StackNode<T> tempElement = startElement;
startElement = tempElement.getNext();
size--;
return tempElement.getData();
}
/**
* Searches for an object in the stack. If this object exists return true, otherwise return false.
*
* @param object Object of type T to insert in stack
* @return True if element is found
*/
public boolean peek(T object) {
for (StackNode<T> tempElement = startElement;
tempElement.getNext() != null;
tempElement = tempElement.getNext()) {
if (object.equals(tempElement.getData())) {
return true;
}
}
return false;
}