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* Javascript -> JavaScript (English) * Update technical documentation page for required change * Update use-class-syntax-to-define-a-constructor-function.english.md * Update left-factorials.md
760 B
760 B
title
| title |
|---|
| Learn how a Stack Works |
Learn how a Stack Works
Method:
- Stacks are an abstract data structures.
- They follow LIFO (Last In First Out) or FILO (First In Last Out) principle.
- Stack's insertion and deletion operations are of O(1) time complexity.
- In JavaScript, arrays can be treated as a Stack since
.push()and.pop()methods have time complexity of O(1). - In this challenge we need to
.pop()and then.push()into the stack.
Solution:
var homeworkStack = ["BIO12","HIS80","MAT122","PSY44"];
homeworkStack.pop();
homeworkStack.push("CS50");
Reference:
- Wikipedia
- Video by Hackerrank