Challenges
Remove Duplicates from Sorted Array in Python — 3 Ways
Safely remove duplicates in-place from a sorted array in Python. 3 approaches: two-pointers, slow-fast index tracking, and set-based shortcut, with complexity analysis.
August 29, 2024
Remove Duplicates from Sorted Array in Swift — Two Pointers
Solve Remove Duplicates from Sorted Array in Swift with working code. Two Pointers (Optimal) approach with O(n) time, plus complexity analysis and interview tips.
August 29, 2024
Pyramid Star Pattern in Dart — With Code, Output & Variations
Print the pyramid star pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
July 08, 2024
Pyramid Star Pattern in Go — With Code, Output & Variations
Print the pyramid star pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
July 08, 2024
Pyramid Star Pattern in Python — With Code, Output & Variations
Print the pyramid star pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
July 08, 2024
Pyramid Star Pattern in Swift — With Code, Output & Variations
Print the pyramid star pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
July 08, 2024
Linked List Cycle in Dart — Floyd's Tortoise & Hare & More
Solve Linked List Cycle in Dart with working code. Floyd's Tortoise & Hare (Optimal) approach with O(n) time, plus complexity analysis and interview tips.
May 01, 2024
Linked List Cycle in Go — Floyd's Tortoise & Hare & More
Solve Linked List Cycle in Go with working code. Floyd's Tortoise & Hare (Optimal) approach with O(n) time, plus complexity analysis and interview tips.
May 01, 2024
Linked List Cycle in Python — Floyd's Tortoise & Hare
Detect a cycle in a linked list two ways — hash set tracking and Floyd's Tortoise and Hare (fast/slow pointers) — with code and a dry run.
May 01, 2024
Linked List Cycle in Swift — Floyd's Tortoise & Hare & More
Solve Linked List Cycle in Swift with working code. Floyd's Tortoise & Hare (Optimal) approach with O(n) time, plus complexity analysis and interview tips.
May 01, 2024
Left Triangle Star Pattern in Dart — Mirrored Stars
Create a mirrored/right-aligned triangle star pattern in Dart. Includes StringBuffer for efficiency, output verification, and beginner practice variations.
April 07, 2024
Left Triangle Star Pattern in Go — With Code, Output & Variations
Print the left triangle star pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
April 07, 2024