CodeByTushu — Daily LeetCode Solutions Publishing Platform ⚡

Learn. Build. Share. Grow.
Daily algorithmic excellence across Java, Python, C++, and JavaScript.

⚡ Today's Daily Problem (Featured: 09 November 2026)

#	Problem Title	Difficulty	Date	Java	Python	C++	JS	Video	Notes
1606	Find Servers That Handled Most Number of Requests	Hard	09 Nov 2026	Java	Python	C++	JS	Watch Video	README

📂 Repository Folder Structure

Solutions are organized cleanly by month and date inside the solutions/ directory:

CodeByTushu-LeetCode-Solutions/
├── README.md                                          # Main repository documentation & archive
├── solutions.json                                     # Structured JSON problem archive
├── .gitignore                                         # Git ignore specifications
├── assets/                                            # Official CodeByTushu brand assets
│   └── logo.png                                       # Official circular brand logo
└── solutions/
    ├── README.md                                      # Monthly Solutions Archive Hub
    ├── January/                                       # Detailed Example Structure
    │   ├── README.md                                  # Monthly dashboard & solutions table
    │   └── 01-January/                                # Daily problem folder
    │       └── 66-Plus-One/
    │           ├── README.md                          # Problem analysis & complexity
    │           ├── Solution.java                      # Java solution
    │           ├── solution.py                        # Python solution
    │           ├── solution.cpp                       # C++ solution
    │           └── solution.js                        # JavaScript solution
    ├── February/                                      # February daily solutions & README
    ├── March/                                         # March daily solutions & README
    ├── April/                                         # April daily solutions & README
    ├── May/                                           # May daily solutions & README
    ├── June/                                          # June daily solutions & README
    ├── July/                                          # July daily solutions & README
    ├── August/                                        # August daily solutions & README
    ├── September/                                     # September daily solutions & README
    ├── October/                                       # October daily solutions & README
    ├── November/                                      # November daily solutions & README
    └── December/                                      # December daily solutions & README

📊 Repository Statistics (Live & Verified)

Total Published Problems: 241
Supported Languages: 4 (Java, Python, C++, JavaScript)
Difficulty Breakdown:
- 🟢 Easy: 60
- 🟡 Medium: 125
- 🔴 Hard: 56
Active Year: 2026
Active Months: November 2026, October 2026, September 2026, August 2026, July 2026, June 2026, May 2026, April 2026, January 2026

🎯 Executive Overview

Welcome to the CodeByTushu Daily LeetCode Solutions Publishing Platform. All daily LeetCode solutions, deep-dive algorithmic approaches, and video walkthroughs are publicly accessible on our official platform:

👉 CodeByTushu LeetCode Portal (https://codebytushu.com/Leetcode/)

This GitHub repository serves as the official, structured open-source code archive providing complete, optimal implementations across four major programming languages:

☕ Java (Solution.java) — Enterprise OOP, standard collections, optimal primitive logic.
🐍 Python (solution.py) — Clean Pythonic code with type annotations and standard data structures.
⚡ C++ (solution.cpp) — High-performance STL algorithms, cache-friendly vectors, and fast I/O.
🌐 JavaScript (solution.js) — Modern ES6+, typed arrays, and performance-tuned JS.

🌐 Official LeetCode Live Platform

Explore the full interactive LeetCode experience on our official platform:

👉 https://codebytushu.com/Leetcode/

🌟 Key Highlights:

🚀 Daily DSA Series: Curated daily algorithmic challenges solved step-by-step.
⏱️ Optimal Memory & Speed: Strict $\mathcal{O}(1)$ or minimal auxiliary memory benchmarks.
💡 Detailed Approaches & Invariants: Comprehensive explanations and dry runs.
🎥 Video Solutions: Embedded walkthroughs directly integrated from our YouTube channel.

💻 Supported Programming Languages & Implementation Philosophy

Every problem in this repository is solved across four industry-standard languages. Each language serves a unique educational and practical purpose:

☕ 1. Java (`Solution.java`)

Why We Use It: Java is the backbone of enterprise software engineering and technical interview rounds at top-tier tech companies (FAANG, Fortune 500). Its strong typing and predictable memory model enforce rigorous object-oriented problem-solving.
What You Will Learn:
- Standard Java Collections Framework (ArrayList, HashMap, TreeMap, PriorityQueue).
- High-performance primitive optimizations (char[], bitwise manipulation, avoiding boxed types like Integer).
- Idiomatic class structures and clean, maintainable modular code.
How Solutions Are Implemented: Designed with zero unnecessary heap allocations for optimal runtime performance, adhering to clean coding standards expected in senior engineering interviews.

🐍 2. Python (`solution.py`)

Why We Use It: Python is the premier language for rapid algorithmic prototyping, machine learning, and clean algorithmic expression. Its expressive syntax allows developers to grasp core logic without verbosity.
What You Will Learn:
- Modern Pythonic idioms, list comprehensions, and generator expressions.
- Standard library mastery: collections (deque, defaultdict, Counter), heapq, and itertools.
- Type annotations (typing.List, typing.Optional) and recursion optimization (functools.lru_cache).
How Solutions Are Implemented: Highly readable, concise, and mathematically elegant implementations that follow PEP 8 standards with full type annotations.

⚡ 3. C++ (`solution.cpp`)

Why We Use It: C++ represents the gold standard in competitive programming and high-frequency, low-latency computing. It gives direct control over system memory and cache locality.
What You Will Learn:
- High-performance Standard Template Library (STL) algorithms and containers (std::vector, std::unordered_map, std::string_view).
- Pass-by-reference (const string&), pointer arithmetic, and cache-friendly contiguous memory allocations.
- I/O fast synchronization (ios_base::sync_with_stdio(false); cin.tie(NULL);).
How Solutions Are Implemented: Tuned for blazing fast execution ($0\text{ ms}$ LeetCode runs), minimal memory footprint, and competitive programming paradigms.

🌐 4. JavaScript (`solution.js`)

Why We Use It: JavaScript powers the entire web ecosystem and full-stack engineering landscape. Frontend and full-stack technical interviews heavily emphasize JavaScript DSA.
What You Will Learn:
- Modern ECMAScript (ES6+) patterns (const/let, arrow functions, spread operator, object destructuring).
- Built-in data structures: Map, Set, Array.prototype higher-order methods, and typed arrays (Uint32Array).
- Engine-level optimization under V8 (Chrome / Node.js JIT execution characteristics).
How Solutions Are Implemented: Clean function-scoped implementations compatible with LeetCode's Node.js runtime, emphasizing clarity and asymptotic optimality.

📚 Solutions Archive — Monthly Folders System

Daily LeetCode solutions are organized into dedicated monthly archives. Click on any month below to view that month's complete date-wise problem index, direct solution code (Java, Python, C++, JavaScript), video walkthroughs, and editorial notes:

📅 2026 Monthly Archives Directory

Month	Season / Quarter	Status	Solved Problems	Direct Folder Link
❄️ January	Winter (Q1)	🟢 Complete Series	31 Solved	👉 Open January Folder (31 Days Solved)
🌸 February	Late Winter (Q1)	🟢 Complete Series	28 Solved	👉 Open February Folder (28 Days Solved)
🌷 March	Spring (Q1)	🟢 Complete Series	31 Solved	👉 Open March Folder (31 Solved)
🌿 April	Spring (Q2)	🟢 Complete Series	30 Solved	👉 Open April Folder (30 Solved)
☀️ May	Early Summer (Q2)	🟢 Complete Series	31 Solved	👉 Open May Folder (31 Solved)
🌊 June	Summer (Q2)	🟢 Complete Series	30 Solved	👉 Open June Folder (30 Solved)
🍉 July	Mid Summer (Q3)	🟢 Complete Series	31 Solved	👉 Open July Folder (31 Solved)
🌴 August	Late Summer (Q3)	🟢 Complete Series	31 Solved	👉 Open August Folder (31 Solved)
🍂 September	Autumn (Q3)	🟢 Complete Series	30 Solved	👉 Open September Folder (30 Solved)
🎃 October	Autumn (Q4)	🟢 Complete Series	31 Solved	👉 Open October Folder (31 Days Solved)
🍁 November	Late Autumn (Q4)	🟢 Active Series	9 Solved	👉 Open November Folder (9 Days Solved)
🎄 December	Winter Finale (Q4)	📁 Upcoming Series	—	📂 Open December Folder

Tip

Clicking any month above directly opens that month's dedicated folder, displaying its interactive date-wise problem table, direct Java, Python, C++, and JavaScript code links, video walkthroughs, and comprehensive READMEs!

📅 Monthly Archive Index

Explore daily solutions organized by month:

🏷️ Topic & Tag Index

Array: #1606, #1267, #1882, #2747, #1385, #3505, #3736, #462, #453, #1848, #3741, #3740, #3655, #3653, #874, #3661, #3418, #2751, #3665, #2946, #3548, #3546, #2906, #1594, #1886, #3643, #3567, #3212, #3070, #1727, #1878, #3970, #1980, #1582, #1536, #3882, #3963, #1356, #3721, #3719, #1382, #3634, #3379, #3640, #3637, #3013, #3010, #744, #3619, #2976, #3651, #1200, #1984, #1877, #3510, #3507, #3315, #3314, #1292, #1254, #1895, #3047, #2975, #2943, #3454, #3453, #1266, #85, #1458, #1975, #1390, #961, #66, #3742, #3225, #2033, #1391, #1559, #3464, #2615, #2452, #1722, #2126, #3161, #3300, #3093, #1340, #1752, #33, #3043, #2657, #2540, #1345, #1306, #154, #153, #2784, #1674, #1665, #2553, #2770, #1914, #3629, #3660, #2078, #1855, #3761, #3488, #2515, #2463, #3644, #3942, #3886, #1846, #3020, #3739, #3737, #1833, #1840, #1732, #3838, #3691, #3689, #2161, #2196, #2574, #3635, #3633, #2144, #2089, #1464, #628, #3514, #3513, #1260, #1979, #3312, #3867, #3336, #1331, #3534, #3532, #1569, #2267, #1807, #3550, #1658, #3525, #3524, #1477, #835, #3414, #3483, #3904, #3903, #3876, #3875, #3568, #2913, #3727, #2897, #2778, #2333, #2091, #2948, #3718, #1872, #3116, #3069, #1386, #3471, #1563, #2029, #3702, #2958, #2996, #1140, #3310, #3731, #1406, #877, #486, #1288, #1301, #3286, #2812
Backtracking: #1415, #1980, #401, #1096, #301, #22
Binary Indexed Tree: #3505, #3841, #3161, #3739
Binary Lifting: #3841, #3559
Binary Search: #1385, #3661, #3296, #3600, #3634, #744, #1292, #3454, #3453, #3464, #3161, #33, #2540, #154, #153, #1855, #3488, #3635, #2089, #3501, #3312, #3534, #3414, #3116, #3620, #2812
Bit Manipulation: #3655, #3653, #3970, #1009, #3841, #3882, #1680, #1404, #1356, #1022, #1461, #868, #762, #693, #401, #190, #67, #3315, #3314, #3120, #2657, #3644, #3514, #3513, #3534, #3568, #2897, #856, #3116, #1386, #3702
Breadth-First Search / Depth-First Search: #3841, #1022, #1382, #110, #3619, #1254, #865, #1339, #1161, #1391, #1559, #1722, #1345, #1306, #3629, #3559, #3558, #1291, #2685, #2265, #3568, #3310, #301, #2492, #3286, #2812
Bucket Sort / Frequency Array: #2333
Combinatorics: #1415, #3559, #3558, #3518, #3312, #1569, #1621, #3116
Counting / Frequency Counting: #1267, #3713, #3721, #3719, #2833, #3737, #1189, #2089, #3016, #3312, #2029
Counting Sort: #1833
Design: #2069, #1622
Divide and Conquer: #3655, #1545, #190, #1569
Dijkstra's Algorithm: #3970
Dynamic Programming: #3505, #1320, #3661, #3418, #3665, #2573, #1594, #3130, #3129, #3882, #799, #1653, #3640, #2977, #3651, #85, #712, #1458, #1411, #3742, #3225, #1871, #1340, #2770, #3660, #2463, #3700, #3699, #3753, #3514, #3336, #3534, #1569, #2267, #3525, #3524, #1477, #1621, #2472, #3414, #940, #115, #678, #32, #22, #1872, #1563, #1510, #1140, #3302, #1406, #877, #486, #1301, #3620
Enumeration: #2975, #3751, #3633, #1291, #3483, #2778
Game Theory / Minimax: #1872, #1927, #1563, #2029, #1510, #1140, #1406, #877, #486
Geometry: #3047, #2975, #3454, #3453, #1266, #3464, #1344, #1401, #836
Graph: #3600, #3970, #2977, #2976, #3650, #1391, #3629, #2685, #3534, #3532, #3310, #2492, #3620, #3286
Heap (Priority Queue): #1606, #1882, #1878, #3296, #3970, #3013, #3650, #3510, #3691, #1464, #3286
Matrix: #1267, #2075, #3418, #3665, #2573, #2946, #3548, #3546, #2906, #1594, #1886, #3643, #3567, #3212, #3070, #1727, #1878, #1582, #1536, #3882, #3963, #3619, #3651, #1292, #1254, #1895, #85, #1975, #3742, #3225, #2033, #1391, #1559, #1914, #1260, #2267, #835, #3568, #1301, #3286, #2812
Matrix Exponentiation:
Minimum Spanning Tree: #3600 #3700
Greedy: #1606, #3736, #453, #3474, #2573, #1727, #3296, #1888, #1536, #1689, #3666, #1653, #3640, #1877, #3507, #2943, #1975, #3464, #2833, #2126, #1665, #3660, #2078, #3863, #1846, #1833, #1840, #3691, #3689, #3633, #2144, #3016, #3014, #3518, #3517, #3536, #3499, #1081, #1111, #1520, #2472, #3876, #3723, #3727, #2897, #2333, #1541, #921, #678, #2091, #3734, #3720, #1927, #1386, #2029, #3348, #3302
Hash Table: #1267, #2747, #3741, #3740, #874, #2840, #3548, #1461, #3714, #3713, #3721, #3719, #2975, #865, #961, #2615, #3121, #3120, #3043, #2657, #2540, #1345, #2784, #1674, #3761, #3488, #1358, #3020, #3737, #1189, #3838, #2196, #3016, #1331, #1807, #1658, #1520, #1477, #3483, #2913, #2897, #3734, #3720, #3718, #1386, #3471, #3090, #2958, #2996, #3731
Linked List: #3510, #2095, #2130, #2058
Line Sweep: #3454
Math: #3736, #462, #453, #1320, #3741, #3740, #3655, #3653, #2069, #1878, #1622, #1415, #3296, #1009, #1980, #1689, #1680, #3666, #762, #67, #799, #3379, #3619, #3047, #2975, #1266, #2409, #1390, #1411, #66, #2033, #3300, #2553, #3629, #3783, #3761, #3644, #3942, #3886, #3020, #3700, #1840, #1344, #3838, #3559, #3558, #3691, #3689, #3753, #3751, #3014, #3518, #628, #3536, #3513, #1979, #3312, #3867, #3658, #3336, #3756, #1569, #3550, #3525, #3524, #3498, #1401, #1621, #836, #3871, #3870, #3876, #3875, #3723, #3727, #2897, #2778, #2333, #856, #2091, #3718, #1872, #1927, #3622, #3116, #1563, #2029, #3702, #1510, #1140, #3348, #3345, #1406, #877, #486, #3754
Monotonic Stack: #85, #1081
Number Theory: #3886, #1979, #3312, #3867, #3658, #3336, #3116, #3348
Ordered Set: #1606, #2213
Prefix / Suffix Precomputation: #3660, #3635, #3501, #3312, #3756, #1658, #3904, #3903, #1872, #1563, #2996, #1140
Prefix Sum: #3548, #3546, #2906, #3212, #3070, #3130, #3129, #3714, #1653, #3640, #1292, #1895, #2409, #3225, #2615, #1871, #1674, #3739, #3737, #3699, #1732, #2574
Recursion: #1545, #761, #1382, #110, #1569, #486
Segment Tree: #1622, #3721, #3454, #3161, #3501, #3756, #3525, #2213
Shortest Path: #3970, #2977, #2976, #3650, #3620, #3286
Simulation: #1606, #1882, #3653, #2069, #874, #657, #2075, #2751, #3665, #2946, #1886, #3643, #1784, #1758, #1582, #1545, #3963, #1680, #1404, #868, #799, #3379, #3637, #3510, #3507, #2409, #3300, #2553, #1914, #3783, #2515, #3942, #3886, #3614, #3612, #3838, #2161, #1260, #1614, #3550, #3498, #2913, #2778, #3622, #3069, #3345, #3754
Sliding Window: #2747, #3505, #3567, #1888, #3634, #1984, #1871, #1358, #1658, #1477, #2904, #3090, #2958
Sorting: #2747, #1385, #462, #3661, #2751, #3567, #1727, #1878, #1356, #761, #3634, #1200, #1984, #1877, #2943, #2033, #2126, #1340, #2784, #1665, #2463, #3863, #3886, #1846, #1833, #1840, #3635, #2144, #2089, #3016, #3517, #1464, #628, #3536, #3867, #1291, #1331, #3534, #3414, #3727, #2333, #2948, #2996, #3731, #1288
Stack: #2751, #1653, #85, #2130, #1081, #1111, #1614, #1190, #1096, #1541, #1021, #921, #856, #678, #32, #20
State-Space Search: #3970
String: #1320, #657, #2075, #3474, #2840, #2839, #2573, #1415, #3841, #1980, #1888, #1784, #1758, #1545, #3963, #1689, #3666, #1404, #1461, #761, #696, #67, #3714, #3713, #1653, #2977, #2976, #712, #2409, #2833, #2452, #3093, #3121, #3120, #1871, #3043, #2515, #3863, #1358, #1967, #1189, #3614, #3612, #3838, #3753, #3751, #3016, #3014, #3518, #3517, #3501, #3499, #1081, #3756, #1111, #1614, #1190, #1807, #1096, #3498, #1520, #2472, #940, #115, #3723, #1541, #1021, #301, #921, #856, #678, #32, #22, #20, #3734, #3720, #2904, #1927, #3090, #2213, #3348, #3302
Topological Sort: #3620
Tree / Binary Tree: #3841, #1022, #1382, #110, #865, #1339, #1161, #3559, #3558, #2196, #1569, #2265
Trie: #2452, #3093, #3043
Two Pointers: #2747, #1385, #3643, #696, #3634, #3640, #3637, #1877, #2540, #2078, #1855, #2095, #2130, #2161, #3517, #3499, #3867, #3534, #2948, #3734, #3302
Union Find: #3600, #1254, #1391, #1559, #1722, #2685, #3532, #2948, #2492

🛠️ The Daily Publishing Workflow

To add today's problem, you only need to supply:

Today's publication date (e.g. 13 October 2026)
Problem screenshot or statement
Your solution code (Java or any preferred language)
YouTube video URL (optional, leave pending if not yet recorded)

Everything else is automated:

Problem number, official title, difficulty, and LeetCode link extraction.
Automatic generation of idiomatic code across Java, Python, C++, and JavaScript.
Detailed time and auxiliary space complexity analysis.
Problem folder creation: solutions/October/DD-October/ID-Title/.
Individual problem README.md creation.
JSON problem archive synchronization (solutions.json).
Main README.md archive update and tag index linking.
Review and Git status inspection prior to publishing.

🌟 Connect With CodeByTushu

🌐 Official LeetCode Platform: codebytushu.com/Leetcode/
📺 YouTube: youtube.com/@codebytushu
🐙 GitHub: github.com/CodeByTushu
💼 LinkedIn: linkedin.com/company/codebytushu
📸 Instagram: instagram.com/codebytushu
🌍 Official Website: codebytushu.com

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CodeByTushu — Daily LeetCode Solutions Publishing Platform ⚡

⚡ Today's Daily Problem (Featured: 09 November 2026)

📂 Repository Folder Structure

📊 Repository Statistics (Live & Verified)

🎯 Executive Overview

🌐 Official LeetCode Live Platform

🌟 Key Highlights:

💻 Supported Programming Languages & Implementation Philosophy

☕ 1. Java (`Solution.java`)

🐍 2. Python (`solution.py`)

⚡ 3. C++ (`solution.cpp`)

🌐 4. JavaScript (`solution.js`)

📚 Solutions Archive — Monthly Folders System

📅 2026 Monthly Archives Directory

📅 Monthly Archive Index

🏷️ Topic & Tag Index

🛠️ The Daily Publishing Workflow

🌟 Connect With CodeByTushu

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Name		Name	Last commit message	Last commit date
assets		assets
solutions		solutions
.gitignore		.gitignore
README.md		README.md
solutions.json		solutions.json

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CodeByTushu — Daily LeetCode Solutions Publishing Platform ⚡

⚡ Today's Daily Problem (Featured: 09 November 2026)

📂 Repository Folder Structure

📊 Repository Statistics (Live & Verified)

🎯 Executive Overview

🌐 Official LeetCode Live Platform

🌟 Key Highlights:

💻 Supported Programming Languages & Implementation Philosophy

☕ 1. Java (Solution.java)

🐍 2. Python (solution.py)

⚡ 3. C++ (solution.cpp)

🌐 4. JavaScript (solution.js)

📚 Solutions Archive — Monthly Folders System

📅 2026 Monthly Archives Directory

📅 Monthly Archive Index

🏷️ Topic & Tag Index

🛠️ The Daily Publishing Workflow

🌟 Connect With CodeByTushu

About

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☕ 1. Java (`Solution.java`)

🐍 2. Python (`solution.py`)

⚡ 3. C++ (`solution.cpp`)

🌐 4. JavaScript (`solution.js`)