Python

Alphabet Rhombus in Python — With Code, Output & Explanation

Print the alphabet rhombus pattern in Python. Complete working code, expected output, algorithm explanation, and practice variations for beginners learning loops.

September 18, 2026

Best Time to Buy and Sell Stock in Python

Solve Best Time to Buy and Sell Stock in Python with working code. One-Pass Min Tracking (Optimal) approach with O(n) time, plus complexity analysis and interview tips.

September 12, 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 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

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

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

Reverse Linked List in Python — Iterative (Optimal) & More

Solve Reverse Linked List in Python with working code. Iterative (Optimal) approach with O(n) time, plus complexity analysis and interview tips.

April 09, 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

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

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 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

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

Maximum Subarray in Python — Kadane's Algorithm (Optimal) & More

Solve Maximum Subarray in Python four ways — Kadane's O(n) algorithm, brute force, divide-and-conquer, and index tracking — with interview tips.

October 23, 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

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 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

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

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

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

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

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

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 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 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

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

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

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

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

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

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

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

Contains Duplicate in Python: Set vs Dictionary vs Sorting

3 ways to detect duplicate elements in a Python array — set-based, dictionary-based, and sorting approaches compared with complexity analysis.

January 08, 2024

Awesome Python

An opinionated list of awesome Python frameworks, libraries, software and resources

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