Challenges
Left Triangle Star Pattern in Python: Easy Tutorial for Beginners
Print a left-aligned star triangle in Python using nested loops. Includes code walkthrough, output, and 4 variations to practice loop logic.
April 07, 2024
Left Triangle Star Pattern in Swift ā Code, Output & Variations
Print the left triangle star pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
April 07, 2024
Inverted Right Triangle Star Pattern in Dart: Descending Loops
Print an inverted right-angle triangle star pattern in Dart with full example code, three variations, and common beginner mistakes explained.
February 23, 2024
Inverted Right Triangle Star Pattern in Go ā Code & Variations
Print the inverted right triangle star pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
February 23, 2024
Inverted Right Triangle Star Pattern in Python ā With Code
Print the inverted right triangle star pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
February 23, 2024
Inverted Right Triangle Star Pattern in Swift ā Code & Variations
Print the inverted right triangle star pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
February 23, 2024
Count Nice Pairs in Dart ā Modular Arithmetic Trick
Count nice pairs in an array in Dart. Learn the modular arithmetic trick that turns O(nĀ²) into O(n) using hash maps, with full code and tests.
January 14, 2024
Contains Duplicate in Dart ā Hash Set (Optimal) & More
Solve Contains Duplicate in Dart with working code. Hash Set (Optimal) approach with O(n) time, plus complexity analysis and interview tips.
January 08, 2024
Contains Duplicate in Go ā Hash Set (Optimal) & More
Solve Contains Duplicate in Go with working code. Hash Set (Optimal) approach with O(n) time, plus complexity analysis and interview tips.
January 08, 2024
Contains Duplicate in Python: Set vs Dictionary vs Sorting
3 ways to detect duplicate elements in a Python array ā set-based, dictionary-based, and sorting approaches compared with complexity analysis.
January 08, 2024
Contains Duplicate in Swift ā Hash Set (Optimal) & More
Solve Contains Duplicate in Swift with working code. Hash Set (Optimal) approach with O(n) time, plus complexity analysis and interview tips.
January 08, 2024