Data structures and algorithms are among the most fundamental concepts of Computer Science. Whether it’s real-world problems you’re trying to solve or the typical coding question asked in an interview, almost every problem requires you to demonstrate a deep understanding of data structures and algorithms. 

This course is a detailed review of some of the most common data structures and algorithms that you’ll see in interviews and your everyday work. With implementation details, thorough explanations, and hands-on coding exercises, you’ll quickly gain the confidence you need to solve any problem, no matter the situation.

Data Structures and Algorithms in Python

The `peek` operation of stack removes and returns the top of the stack. 

The <code>peek</code> operation of stack removes and returns the top of the stack.

Stacks follow the First-In, First-Out property. 

New elements are inserted at the bottom of the stack.  

Stacks follow the First-In, Last-Out property. 

Stack is always implemented using linked lists. 

Which of the following is true about stacks? 

Which of the following is true about stacks?

Removing the top element from the stack requires moving out all the elements in the stack. 

Removing the top element from the stack requires moving out all the elements in the stack.

 What is the output of the following code? 
 ```python
myStack = Stack()
myStack.push("A")
myStack.push("B")
myStack.pop()
myStack.push("C")
myStack.push("D")
myStack.pop()
myStack.pop()
print(myStack.peek())
 ```

What is the output of the following code?
<pre><code class="language-python">myStack = Stack()
myStack.push(&quot;A&quot;)
myStack.push(&quot;B&quot;)
myStack.pop()
myStack.push(&quot;C&quot;)
myStack.push(&quot;D&quot;)
myStack.pop()
myStack.pop()
print(myStack.peek())
</code></pre>

```python
push()
pop()
isEmpty()
peek()
```

```python
push()
pop()
isEmpty()
peek()
get_stack()
```

What are the basic operations of a stack?


What are the basic operations of a stack?

It's quiz time! Test yourself by solving these questions about stacks.

Introduction

Stack

Singly Linked Lists

Circular Linked Lists

Doubly Linked Lists

Arrays

Binary Trees

Binary Search Trees

Binary Search

Recursion

String Processing

Quiz