What Is Push and Pop in Data Structure?

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Heather Bennett

What Is Push and Pop in Data Structure?

Data structures are essential for storing and organizing data efficiently. One commonly used data structure is a stack, which follows the principle of Last-In-First-Out (LIFO).

In a stack, the two fundamental operations are push and pop. Let’s explore what push and pop mean in the context of a data structure.

Push Operation

The push operation adds an element to the top of the stack. It increases the stack size by one and places the new element at the top.

This action is like stacking one item on top of another.

To better understand how push works, consider an example where we have a stack with three elements: A, B, and C. When we perform a push operation to add element D, it becomes the new topmost element.

  • A (bottom)
  • B
  • C (top)
  • D (new top)

In HTML code, you can use <b> tags to make text bold. By employing this styling element, you can emphasize key terms such as “push” to make them stand out clearly.

Pop Operation

The opposite of push is the pop operation. It removes the topmost element from the stack.

When an item is popped, its position gets freed up for other elements to take over.

Continuing from our previous example, if we perform a pop operation after pushing D onto the stack, D will be removed from the top, and C will become the new topmost element.

  • A (bottom)
  • B
  • C (new top)

Using the <u> tag, we can underline important terms like “pop” to draw attention to them. This visual cue enhances readability and helps readers quickly grasp the concepts being discussed.

Summary

In summary, push and pop are fundamental operations in a stack data structure. The push operation adds an element to the top of the stack, while the pop operation removes the topmost element from the stack.

These operations allow us to manipulate a stack efficiently and follow the Last-In-First-Out principle.

By incorporating HTML styling elements like bold text, underlined text,

    and

  • tags for lists, and subheaders such as

    and

    , we can enhance both the visual appeal and organization of our tutorial on push and pop in data structures.

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