80 Days Of Challenges Series' Articles

Shahrouz Nikseresht

Nov 9 '25

Day 29: Python Strong Password Generator, Create Secure Passwords with Random and Constraints

#challenge #python #beginners #programming

1

3 min read

Shahrouz Nikseresht

Nov 10 '25

Day 30: Python List Merger, Combine Two Lists Manually with Loops

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2 min read

Shahrouz Nikseresht

Nov 11 '25

Day 31: Python List Rotator, Shift Elements Right by One with Manual Indexing

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1

3 min read

Shahrouz Nikseresht

Nov 12 '25

Day 32: Python Temperature Converter, Switch Between Fahrenheit and Celsius with Inputs

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1

2 min read

Shahrouz Nikseresht

Nov 13 '25

Day 33: Python Sort by Vowels, Custom Sorting Fruits by Vowel Count with Keys

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1

3 min read

Shahrouz Nikseresht

Nov 14 '25

Day 34: Python Balanced Numbers Filter, Identify Numbers with Equal Even and Odd Digits Using Modular Checks

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4 min read

Shahrouz Nikseresht

Nov 15 '25

Day 35: Python Morse Code Generator, Convert English Text to Morse with Full A-Z Mapping and Interactive Input

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1

4 min read

Shahrouz Nikseresht

Nov 16 '25

Day 36: Python Integer Sequence Generator, Efficiently Concatenate Numbers from 1 to n with Interactive Input

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1

5 min read

Shahrouz Nikseresht

Nov 17 '25

Day 37: Python Image Search, Case-Insensitive Filter for Matching Terms in Lists

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1

2 min read

Shahrouz Nikseresht

Nov 18 '25

Day 38: Python Domain Extractor, Pull Unique Domains from Emails with Validation and Order Preservation

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1

3 min read

Shahrouz Nikseresht

Nov 19 '25

Day 39: Python Word Counter, Count Words in Text with Whitespace Handling

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1

2 min read

Shahrouz Nikseresht

Nov 20 '25

Day 40: Python Armstrong Numbers Finder, Detect Narcissistic Numbers in a Range with Digit Power Sum

#challenge #python #intermediate #programming

2

3 min read

Shahrouz Nikseresht

Nov 21 '25

Day 41: Python Happy Number Checker, Detect Numbers Leading to 1 Through Digit Square Sums with Cycle Detection

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1

3 min read

Shahrouz Nikseresht

Nov 22 '25

Day 42: Python Roman Numeral Converter, Bidirectional Conversion Between Roman and Integers with Mapping and Loops

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1

3 min read

Shahrouz Nikseresht

Nov 23 '25

Day 43: Python Valid Parentheses Checker, Stack-Based Bracket Validation with Mapping and Loop Scanning

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1

2 min read

Shahrouz Nikseresht

Nov 24 '25

Day 44: Python Longest Substring Finder, Sliding Window Technique for Non-Repeating Characters Length

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5

2 min read

Shahrouz Nikseresht

Nov 25 '25

Day 45: Python Majority Element Finder, Boyer-Moore Voting Algorithm for Efficient Detection in Arrays

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1

2 min read

Shahrouz Nikseresht

Nov 26 '25

Day 46: Python Moving Average Calculator, Optimized Sliding Window for Simple Moving Average Computation

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1

2 min read

Shahrouz Nikseresht

Nov 27 '25

Day 47: Python Rotate Array to Right by K Steps – Master the Elegant Slicing Trick in One Line

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1

3 min read

Shahrouz Nikseresht

Nov 28 '25

Day 48: Python Merge Two Sorted Lists - Master the Two-Pointer Technique in Pure O(n)

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1

3 min read

Shahrouz Nikseresht

Nov 29 '25

Day 49: Python Playlist Shuffler – True Unbiased Random Shuffle with Fisher-Yates Algorithm

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1

3 min read

Shahrouz Nikseresht

Nov 30 '25

Day 50: Python Group Anagrams – The Cleanest O(n * m log m) Way to Cluster Words by Letter Signature

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1

2 min read

Shahrouz Nikseresht

Dec 1 '25

Day 51: Python First Unique Character – Find the First Non-Repeating Char in String with Hash Map Magic

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2

2 min read

Shahrouz Nikseresht

Dec 2 '25

Day 52: Python Longest Continuous Increasing Subarray – Find the Maximum Length of Strictly Increasing Adjacent Elements in O(n)

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1

3 min read

Shahrouz Nikseresht

Dec 3 '25

Day 53: Python Count Overlapping Substrings – The Hidden Limitation of str.count() and the Perfect Sliding Window Fix

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3 min read

Shahrouz Nikseresht

Dec 4 '25

Day 54: Python Summary Ranges – Compress Sorted Unique Integers into Minimal "a->b" Strings Like LeetCode Pros

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3 min read

Shahrouz Nikseresht

Dec 5 '25

Day 55: Python Calculate Mean & Median Manually – No Statistics Module, Just Pure Python Power

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3 min read

Shahrouz Nikseresht

Dec 6 '25

Day 56: Python Fibonacci nth Term – Blazing Fast O(n) Iterative Solution with O(1) Space (No Recursion!)

#challenge #python #intermediate #programming

2 min read

Shahrouz Nikseresht

Dec 7 '25

Day 57: Python GCD & LCM with Euclidean Algorithm, Lightning-Fast Divisor Math That's 2000+ Years Old (And Still Unbeatable)

#challenge #python #intermediate #algorithms

3 min read

Shahrouz Nikseresht

Dec 8 '25

Day 58: Python Run-Length Encoding (RLE) – Compress Strings Like a Pro with This Ultra-Simple O(n) Trick

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2 min read