Implement removeFirst for a doubly linked list
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Implement removeFirst for a doubly linked list
![8
}
no usages new
@Test
/**This test checks the correct implementation of the removeFirst method. */
public void removeFirst Test() {
Deque<Integer> deque = new Linked List Deque<> ();
deque.addFirst ( x: 1);
deque.addFirst(x: 2);
deque.addLast(x: 3);
}
I
Integer removed Element = deque.removeFirst();
assert That (removed Element).is EqualTo( expected: 2);
assert That (deque.size()).is EqualTo( expected: 2);
assert That (deque.get (0)).is EqualTo( expected: 1);
assert That (deque.get (1)).is EqualTo( expected: 3);
assert That (deque.toList()). contains Exactly(...varargs: 1,3).inOrder();](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd79172df-13f4-42af-b879-ea96769a4e84%2F3bedf43b-0ecc-4643-be62-2b8f3e3bd4c7%2Fj7xvtg_processed.jpeg&w=3840&q=75)
Transcribed Image Text:8
}
no usages new
@Test
/**This test checks the correct implementation of the removeFirst method. */
public void removeFirst Test() {
Deque<Integer> deque = new Linked List Deque<> ();
deque.addFirst ( x: 1);
deque.addFirst(x: 2);
deque.addLast(x: 3);
}
I
Integer removed Element = deque.removeFirst();
assert That (removed Element).is EqualTo( expected: 2);
assert That (deque.size()).is EqualTo( expected: 2);
assert That (deque.get (0)).is EqualTo( expected: 1);
assert That (deque.get (1)).is EqualTo( expected: 3);
assert That (deque.toList()). contains Exactly(...varargs: 1,3).inOrder();
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