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#algorithms #data-structures #stack #breadth-first-search #queue #two-pointer #linked-list #apex #architecture #layered #good-practices

Sort a stack with another stack
Sort a stack in ascending order using only one additional stack.
Created:
Nov 9, 2025
Tags:
#algorithms #data-structures #stack
Calculate the number of islands in a 2D grid
Calculate the number of islands in a 2D grid using Breadth-First Search (BFS).
Created:
Nov 4, 2025
Tags:
#algorithms #breadth-first-search #data-structures #queue
Swap nodes in pairs
Swap every two adjacent nodes in a linked list and return its head.
Created:
Oct 28, 2025
Tags:
#algorithms #two-pointer #data-structures #linked-list
Reverse a linked list
Reverse a linked list with the two-pointer technique iteratively.
Created:
Oct 11, 2025
Tags:
#algorithms #two-pointer #data-structures #linked-list
Remove Nth node from end of linked list
A classic linked list problem that can be resolved with the two-pointer technique.
Created:
Oct 7, 2025
Tags:
#algorithms #two-pointer #data-structures #linked-list
Dependency inversion in Apex
The fifth of the SOLID principles
Created:
Nov 10, 2023
Tags:
#apex #architecture #layered #good-practices