Challenges - Learn To Code
10 Creative Pattern Programs in Dart — Spiral, ZigZag & More
Master Dart with 10 unique pattern programs — Spiral Square, K-Shape, Wave, Checkerboard, Fibonacci Triangle, and more. Great for interview prep.
September 04, 2026
Spiral Number Matrix in Dart — With Code, Output & Explanation
Print the spiral number matrix pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 20, 2026
Spiral Number Matrix in Go — With Code, Output & Explanation
Print the spiral number matrix pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 20, 2026
Spiral Number Matrix in Python — With Code, Output & Explanation
Print the spiral number matrix pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 20, 2026
Spiral Number Matrix in Swift — With Code, Output & Explanation
Print the spiral number matrix pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 20, 2026
Spiral Maze Path in Dart — With Code, Output & Explanation
Print the spiral maze path pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 02, 2026
Spiral Maze Path in Go — With Code, Output & Explanation
Print the spiral maze path pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 02, 2026
Spiral Maze Path in Python — With Code, Output & Explanation
Print the spiral maze path pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 02, 2026
Spiral Maze Path in Swift — With Code, Output & Explanation
Print the spiral maze path pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 02, 2026
Snake Matrix in Dart — With Code, Output & Explanation
Print the snake matrix pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
June 04, 2026
Snake Matrix in Go — With Code, Output & Explanation
Print the snake matrix pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
June 04, 2026
Snake Matrix in Python — With Code, Output & Explanation
Print the snake matrix pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
June 04, 2026
Snake Matrix in Swift — With Code, Output & Explanation
Print the snake matrix pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
June 04, 2026
Right Pascal Star in Dart — With Code, Output & Explanation
Print the right pascal star pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
May 03, 2026
Right Pascal Star in Go — With Code, Output & Explanation
Print the right pascal star pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
May 03, 2026
Right Pascal Star in Python — With Code, Output & Explanation
Print the right pascal star pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
May 03, 2026
Right Pascal Star in Swift — With Code, Output & Explanation
Print the right pascal star pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
May 03, 2026
Repeated Letter Rows in Dart — With Code, Output & Explanation
Print the repeated letter rows pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
March 12, 2026
Repeated Letter Rows in Go — With Code, Output & Explanation
Print the repeated letter rows pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
March 12, 2026
Repeated Letter Rows in Python — With Code, Output & Explanation
Print the repeated letter rows pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
March 12, 2026
Repeated Letter Rows in Swift — With Code, Output & Explanation
Print the repeated letter rows pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
March 12, 2026
Pascal's Triangle in Dart — With Code, Output & Explanation
Print the pascal's triangle pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
January 21, 2026
Pascal's Triangle in Go — With Code, Output & Explanation
Print the pascal's triangle pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
January 21, 2026
Pascal's Triangle in Python — With Code, Output & Explanation
Print the pascal's triangle pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
January 21, 2026
Pascal's Triangle in Swift — With Code, Output & Explanation
Print the pascal's triangle pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
January 21, 2026
10 Advanced Pattern Programs in Python — Floyd's & More
Learn advanced Python pattern programs — Floyd's Triangle, Pascal's Triangle, Butterfly, Spiral Matrix, ZigZag, and more. Full source code with examples.
January 03, 2026
Palindromic Number Pyramid in Dart — Code, Output & Explanation
Print the palindromic number pyramid pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
December 18, 2025
Palindromic Number Pyramid in Go — Code, Output & Explanation
Print the palindromic number pyramid pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
December 18, 2025
Palindromic Number Pyramid in Python — Code, Output & Explanation
Print the palindromic number pyramid pattern in Python. Complete working code, expected output, and a clear step-by-step explanation for beginners learning loops.
December 18, 2025
Palindromic Number Pyramid in Swift — Code, Output & Explanation
Print the palindromic number pyramid pattern in Swift. Complete working code, expected output, and a clear step-by-step explanation for beginners learning loops.
December 18, 2025
Number Pyramid in Dart — With Code, Output & Explanation
Print the number pyramid pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 16, 2025
Number Pyramid in Go — With Code, Output & Explanation
Print the number pyramid pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 16, 2025
Number Pyramid in Python — With Code, Output & Explanation
Print the number pyramid pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 16, 2025
Number Pyramid in Swift — With Code, Output & Explanation
Print the number pyramid pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 16, 2025
Letter Diamond in Dart — With Code, Output & Explanation
Print the letter diamond pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
September 01, 2025
Letter Diamond in Go — With Code, Output & Explanation
Print the letter diamond pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
September 01, 2025
Letter Diamond in Python — With Code, Output & Explanation
Print the letter diamond pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
September 01, 2025
Letter Diamond in Swift — With Code, Output & Explanation
Print the letter diamond pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
September 01, 2025
Hollow Square Star in Dart — With Code, Output & Explanation
Print the hollow square star pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 31, 2025
Hollow Square Star in Go — With Code, Output & Explanation
Print the hollow square star pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 31, 2025
Hollow Square Star in Python — With Code, Output & Explanation
Print the hollow square star pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 31, 2025
Hollow Square Star in Swift — With Code, Output & Explanation
Print the hollow square star pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 31, 2025
Hollow Cross Plus in Dart — With Code, Output & Explanation
Print the hollow cross plus pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 03, 2025
Hollow Cross Plus in Go — With Code, Output & Explanation
Print the hollow cross plus pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 03, 2025
Hollow Cross Plus in Python — With Code, Output & Explanation
Print the hollow cross plus pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 03, 2025
Hollow Cross Plus in Swift — With Code, Output & Explanation
Print the hollow cross plus pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
July 03, 2025
Floyd's Triangle in Dart — With Code, Output & Explanation
Print Floyd's Triangle in Dart using nested loops and a running counter. Full working code with output, plus variations like reverse Floyd's and right alignment.
June 09, 2025
Floyd's Triangle in Go — With Code, Output & Explanation
Print the floyd's triangle pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
June 09, 2025
Floyd's Triangle in Python — With Code, Output & Explanation
Print Floyd's Triangle in Python using nested loops. Five approaches with working code and output, complexity analysis, tests, and practice variations.
June 09, 2025
Floyd's Triangle in Swift — With Code, Output & Explanation
Print the floyd's triangle pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
June 09, 2025
Cross/Plus Sign Star in Dart — With Code, Output & Explanation
Print the cross/plus sign star pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
May 14, 2025
Cross/Plus Sign Star in Go — With Code, Output & Explanation
Print the cross/plus sign star pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
May 14, 2025
Cross/Plus Sign Star in Python — With Code, Output & Explanation
Print the cross/plus sign star pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
May 14, 2025
Cross/Plus Sign Star in Swift — With Code, Output & Explanation
Print the cross/plus sign star pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
May 14, 2025
Christmas Tree Star in Dart — With Code, Output & Explanation
Print the christmas tree star pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
March 25, 2025
Christmas Tree Star in Go — With Code, Output & Explanation
Print the christmas tree star pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
March 25, 2025
Christmas Tree Star in Python — With Code, Output & Explanation
Print the christmas tree star pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
March 25, 2025
Christmas Tree Star in Swift — With Code, Output & Explanation
Print the christmas tree star pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
March 25, 2025
Checkerboard in Dart — With Code, Output & Explanation
Print the checkerboard pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
February 25, 2025
Checkerboard in Go — With Code, Output & Explanation
Print the checkerboard pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
February 25, 2025
Checkerboard in Python — With Code, Output & Explanation
Print the checkerboard pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
February 25, 2025
Checkerboard in Swift — With Code, Output & Explanation
Print the checkerboard pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
February 25, 2025
Right-Facing Arrowhead in Dart — With Code, Output & Explanation
Print the right-facing arrowhead pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
January 24, 2025
Right-Facing Arrowhead in Go — With Code, Output & Explanation
Print the right-facing arrowhead pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
January 24, 2025
Right-Facing Arrowhead in Python — Code, Output & Explanation
Print the right-facing arrowhead pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
January 24, 2025
Right-Facing Arrowhead in Swift — With Code, Output & Explanation
Print the right-facing arrowhead pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
January 24, 2025
Alphabet Pyramid in Dart — With Code, Output & Explanation
Print the alphabet pyramid pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
December 31, 2024
Alphabet Pyramid in Go — With Code, Output & Explanation
Print the alphabet pyramid pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
December 31, 2024
Alphabet Pyramid in Python — With Code, Output & Explanation
Print the alphabet pyramid pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
December 31, 2024
Alphabet Pyramid in Swift — With Code, Output & Explanation
Print the alphabet pyramid pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
December 31, 2024
Alphabet Hollow Diamond in Dart — With Code, Output & Explanation
Print the alphabet hollow diamond pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 27, 2024
Alphabet Hollow Diamond in Go — With Code, Output & Explanation
Print the alphabet hollow diamond pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 27, 2024
Alphabet Hollow Diamond in Python — Code, Output & Explanation
Print the alphabet hollow diamond pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 27, 2024
Alphabet Hollow Diamond in Swift — Code, Output & Explanation
Print the alphabet hollow diamond pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 27, 2024
Alphabet Rectangle in Dart — With Code, Output & Explanation
Print the alphabet rectangle pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 09, 2024
Alphabet Rectangle in Go — With Code, Output & Explanation
Print the alphabet rectangle pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 09, 2024
Alphabet Rectangle in Python — With Code, Output & Explanation
Print the alphabet rectangle pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 09, 2024
Alphabet Rectangle in Swift — With Code, Output & Explanation
Print the alphabet rectangle pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.
November 09, 2024
Solid Square Star Pattern in Dart — Code, Output & Variations
Print the solid square star pattern in Dart. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
October 08, 2024
Solid Square Star Pattern in Go — With Code, Output & Variations
Print the solid square star pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
October 08, 2024
Solid Square Star Pattern in Python: Simple Grid Tutorial
Print a solid square star pattern in Python using nested loops or the string multiplication trick. Includes code, output, and practice variations.
October 08, 2024
Solid Square Star Pattern in Swift — Code, Output & Variations
Print the solid square star pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
October 08, 2024
Right Triangle Star Pattern in Dart — Beginner Guide
Build a right-angled star triangle in Dart with nested loops. Full code with main() function, expected output, and practice exercises for new Dart developers.
September 10, 2024
Right Triangle Star Pattern in Go — Code, Output & Variations
Print the right triangle star pattern in Go. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
September 10, 2024
Right Triangle Star Pattern in Python — Beginner Guide
Learn how to print a right triangle star pattern in Python with for-loops. Includes full code, output walkthrough, and 5 variations for beginners.
September 10, 2024
Right Triangle Star Pattern in Swift — Code, Output & Variations
Print the right triangle star pattern in Swift. Complete working code, expected output, algorithm explanation, and practice variations for beginners.
September 10, 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
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
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 — 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 — 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 — 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 — 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