Mastery Points
0
Stack Implementation in dsa
Context & Logic
A custom stack implementation using an array or linked list to manage elements based on the LIFO principle.
Example
class Stack {
constructor() { this.items = []; }
push(item) { this.items.push(item); }
pop() { return this.items.pop(); }
peek() { return this.items[this.items.length - 1]; }
isEmpty() { return this.items.length === 0; }
}Step-by-Step Logic
1
Create an array or list to store elements.
2
Implement push: Add element to the end of the collection.
3
Implement pop: Remove and return the last element added.
4
Implement peek: View the top element without removing it.
Complexity Metrics
Time Efficiency
O(1) for all core operations
Memory Footprint
O(n)