JavaScript Stack Using LIFO Principle

This JavaScript program implements a simple stack using an array, demonstrating key operations like adding, removing, and displaying elements according to the Last In, First Out (LIFO) principle.

Initial Array (Data):

let Data = [10, 20, 30, 40, 50, 60, 70, 80, 90];

• The array Data starts with 9 elements, ranging from 10 to 90.

Displaying the Original Array:

console.log("Varignal Array ", Data);

• This line prints the original array to the console.

AddEle Function:

function AddEle(val) {
  if (isFull()) {
    console.log("Array is Full ,Element Can't add ..!");
  } else {
    console.log(`Add New >> ${val} Element..!`);
    Data.push(val);
  }
}

• This function adds a new element (val) to the array.
• It first checks if the array is full using the isFull() function.
• If the array is full (10 elements), it prints a message indicating that no more elements can be added.
• Otherwise, it adds the new element to the end of the array using push(val) and prints a confirmation message.

isFull Function:

function isFull() {
  if (Data.length >= 10) {
    return true;
  } else {
    return false;
  }
}

• This function checks if the array has reached its capacity (10 elements).
• It returns true if the array length is 10 or more, indicating it's full, and false otherwise.

Remove Function:

function Remove(item) {
  if (isEmpty()) {
    console.log("Array is empty..!");
  } else {
    console.log("Removed Arry's Last Element..!");
    Data.pop(item);
  }
}

• This function removes the last element from the array.
• It first checks if the array is empty using the isEmpty() function.
• If the array is empty, it prints a message indicating that no elements can be removed.
• Otherwise, it removes the last element using pop() and prints a message indicating the removal.

isEmpty Function:

function isEmpty() {
  if (Data.length === 0) {
    return true;
  } else {
    return false;
  }
}

• This function checks if the array is empty.
• It returns true if the array length is 0, indicating it's empty, and false otherwise.

Display Function:

function Display() {
  console.log("Upadted Array ..!", Data);
}

• This function prints the current state of the array to the console.

Executing the Functions:

AddEle(200);  // Attempts to add 200 to the array.
Remove();     // Removes the last element from the array.
Display();    // Displays the updated array.

Output:

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