#leetcode-medium

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NO notes from shu

LeetCode Diaries #7: Consecutively Humbled — Two solutions and One Existential Crisis Later

Do you ever read a question and think to yourself — ‘Easy, I got this’? Except you really don’t ‘got this’. You had never really ‘got…

Aug 07, 2026 · 4 min read · 0 claps #python #leetcode #leetcode-medium

TCH

NO notes from shu

LeetCode Diaries #6: Turns Out the Most Optimal Solution isn’t the Most Intuitive One

It finally happened…for problem #6 I did in fact end up asking the powers that be for the best solution.

Aug 05, 2026 · 4 min read · 0 claps #python #leetcode-medium #data-structure-algorithm

TCH

EV Everythingguy

From Parent Comparisons to Range Propagation: How I Derived the Validate BST Solution During an…

Binary Search Tree validation is one of those problems that looks simple at first.

Jul 30, 2026 · 5 min read · 0 claps #leetcode-medium #binary-tree #binary-search

VI Vinod Muddasu

Number-of-Unique-xor-Triplets-i

The above link has the better and path wise understanding and explanation of the question 3513 of Leetcode.

Jul 23, 2026 · 2 min read · 0 claps #sad #leetcode-medium #leetcode

TCH

KR Krysh

3737: Count Subarrays With Majority Element I

Problem Overview

Jun 25, 2026 · 4 min read · 0 claps #leetcode-medium #leetcode #programming

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RA Rahul Kumar · CodeX

DSA Day 96/250: Task Scheduler (LeetCode 621)

Schedule tasks efficiently with cooling periods using a greedy counting approach.

Jun 22, 2026 · 4 min read · 0 claps paywalled #data-structures #data-structure-algorithm #leetcode

TCH

RA Rahul Kumar · CodeX

DSA Day 95/250: Find K Pairs with Smallest Sums (LeetCode 373)

Find the k pairs with the smallest sums using a min heap and sorted array properties.

Jun 11, 2026 · 4 min read · 6 claps paywalled #data-structures #data-structure-algorithm #leetcode

SCI TCH

RA Rahul Kumar · CodeX

DSA Day 94/250: Kth Smallest Element in a Sorted Matrix (LeetCode 378)

Find the kth smallest element efficiently using binary search on answer space.

Jun 11, 2026 · 3 min read · 10 claps paywalled #data-structures #data-structure-algorithm #leetcode

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AG Agrawal Monaa

🚀 Rethinking “Medium” Problems — It’s Easier Than You Think

Many developers struggle at the initial point of solving coding problems. The moment they see the label medium, their subconscious…

Jun 10, 2026 · 1 min read · 2 claps #coding #leetcode-medium #logic

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RA Rahul Kumar · CodeX

DSA Day 93/250: K Closest Points to Origin (LeetCode 973)

Find the k closest points to the origin efficiently using a max heap.

Jun 09, 2026 · 3 min read · 1 claps paywalled #data-structures #data-structure-algorithm #leetcode

TCH

KR Krysh

LeetCode 3689: Maximum Total Subarray Value I | From Overthinking to a One-Line Solution

Some LeetCode problems look like they are hiding a Dynamic Programming monster behind a friendly title.

Jun 09, 2026 · 2 min read · 0 claps #technology #leetcode #leetcode-medium

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HA Hariprasanth Shanmugam

Sliding Window + HashMap: The Pattern That Changed How I Solve String Problems

When solving string problems, I kept noticing the same combination appear again and again:

Jun 01, 2026 · 2 min read · 0 claps #sad #leetcode-medium #javascript

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SA Samidha Joshi

LeetCode 73: Set Matrix Zeroes

In this blog:

Jun 01, 2026 · 4 min read · 1 claps #matrix #data-structure-algorithm #leetcode-medium

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IS Ishmaam

Linked List Patterns I learned from solving Leetcode Part 1

Pattern 1: Finding the Middle of the List

May 28, 2026 · 5 min read · 0 claps #leetcode-medium #linked-lists #interview

LIF

A 許博淳 · 數據共筆

LeetCode:(SQL)(SQL 50)Restaurant Growth

題目連結：https://leetcode.com/problems/restaurant-growth/description/?envType=study-plan-v2&envId=top-sql-50

May 19, 2026 · 4 min read · 0 claps #leetcode #leetcode-medium #sql

A 許博淳 · 數據共筆

LeetCode:(SQL)(SQL 50)(Advanced String Functions / Regex / Clause) Second Highest Salary

題目連結：https://leetcode.com/problems/second-highest-salary/description/?envType=study-plan-v2&envId=top-sql-50

May 19, 2026 · 2 min read · 0 claps #leetcode #leetcode-medium #sql

A 許博淳 · 數據共筆

LeetCode：(SQL)(SQL 50)Monthly Transactions I

題目連結：https://leetcode.com/problems/monthly-transactions-i/description/?envType=study-plan-v2&envId=top-sql-50

May 17, 2026 · 0 min read · 0 claps #leetcode #leetcode-medium #sql-50

HUM AI

SH Shruti Deora

Day 6 : Blind 75

Hey everyone!

May 02, 2026 · 2 min read · 1 claps #leetcode #leetcode-medium #9-to-5

HUM AI TCH

RA Ramnayan Yadav

Dynamic Sliding Window & Two Pointer — Concepts Explained with Examples

In this post i’m gone explained you dynamic sliding window and two pointer concept. first and foremost we have to know why i should use…

Apr 30, 2026 · 3 min read · 0 claps #programming #leetcode-medium #data-structures

A 許博淳 · 數據共筆

Leetcode：(SQL)(SQL 50)(Advanced Select and Joins)Product Price at a Given Date

題目連結：https://leetcode.com/problems/product-price-at-a-given-date/description/?envType=study-plan-v2&envId=top-sql-50

Apr 28, 2026 · 2 min read · 0 claps #sql #sql-50 #leetocde

A 許博淳 · 數據共筆

Leetcode：(SQL)(SQL 50)(Advanced Select and Joins) Consecutive Numbers

題目連結：https://leetcode.com/problems/consecutive-numbers/description/?envType=study-plan-v2&envId=top-sql-50

Apr 28, 2026 · 2 min read · 0 claps #leetcode #leetcode-medium #sql

TCH

MI Minoltan Issack

The Farmer’s Sarah: Which Land Sections Are Most Profitable?

The Problem — Sarah’s Farm

Apr 15, 2026 · 5 min read · 301 claps #leetcode #problem-solving #2d-array-sum

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AR Ariharan Elangovan

Solution for Frequency of the Most Frequent Element (Leetcode problem:- 1838)

Hi Myself Ariharan, I am a software Engineer with 6 years of experience in software industry. I want to learn DSA, System Design concepts…

Apr 14, 2026 · 1 min read · 0 claps #data-structures #sliding-window-algorithm #leetcode-medium

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RA Rahul Kumar · CodeX

DSA Day 34/250: Longest Palindromic Substring (LeetCode 5)

Master the longest palindromic substring using the optimal expand-around-center technique with full iteration clarity.

Feb 07, 2026 · 3 min read · 109 claps paywalled #data-structures #data-structure-algorithm #leetcode

A 許博淳 · 數據共筆

Leetcode：(SQL)(SQL 50)(Sub Query) Friend Requests II: Who Has the Most Friends

題目連結：https://leetcode.com/problems/friend-requests-ii-who-has-the-most-friends/description/?envType=study-plan-v2&envId=top-sql-50

Jan 01, 2026 · 2 min read · 0 claps #leetcode #leetcode-medium #sql

LIF

A 許博淳 · 數據共筆

Leetcode：(SQL)(SQL 50)(Sub Query) Restaurant Growth

題目連結：https://leetcode.com/problems/restaurant-growth/description/?envType=study-plan-v2&envId=top-sql-50

Dec 26, 2025 · 3 min read · 0 claps #leetcode #leetcode-medium #sql

TCH

AA Aakansha A

Manacher’s Algorithm

and 5. Longest Palindromic Substring

Nov 15, 2025 · 2 min read · 0 claps #manachers-algorithm #leetcode-medium #longestpalindromicsubstr

TCH

A 黎子甄

LeetCode JS 2676. Throttle [Medium]

Throttle

Oct 27, 2025 · 8 min read · 20 claps #leetcode #leetcode-medium #throttle

HUM SCI SPT

BL Blogging

Why Students Prefer the Best LEET Coaching in Uttam Nagar

One of the most crucial tests for diploma holders and B.Sc. (Mathematics) graduates who wish to be admitted directly into the second year…

Aug 26, 2025 · 7 min read · 0 claps #leet #leetcode-medium #leetcode-solution

AK Akansha Saraswat

Longest Repeating Character Replacement — Blind75 Leetcode

Problem Link: https://leetcode.com/problems/longest-repeating-character-replacement/description/?envType=problem-list-v2&envId=oizxjoit

Jul 17, 2025 · 1 min read · 0 claps #blind75 #leetcode-medium #longest

1P 1P!ng

LeetCode — 106. Construct Binary Tree from Inorder and Postorder Traversal

題目連結：https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal/description/

Jun 12, 2025 · 2 min read · 0 claps #leetcode #leetcode-medium #writeup

TCH

1P 1P!ng

LeetCode — 11. Container With Most Water

題目連結：https://leetcode.com/problems/container-with-most-water/description/

Jun 11, 2025 · 3 min read · 0 claps #leetcode #leetcode-medium #writeup

SM Smriti Agrawal

1123: Lowest Common Ancestor of Deepest Leaves

Link: https://leetcode.com/problems/lowest-common-ancestor-of-deepest-leaves/description

Apr 04, 2025 · 3 min read · 0 claps #leetcode #leetcode-medium #leetcode-daily-challenge

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RU Ruben Lazarus

Reversing an Integer in Rust — Optimized Approach

Introduction

Feb 03, 2025 · 3 min read · 1 claps paywalled #rust #rust-programming-language #leetcode-medium

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RU Ruben Lazarus

Zigzag Conversion in Rust: An Optimized Approach

Introduction

Jan 31, 2025 · 3 min read · 7 claps paywalled #rust #rust-programming-language #leetcode-medium

GEN TCH

RU Ruben Lazarus

Finding the Longest Palindromic Substring in Rust

Palindromes are fascinating patterns in strings that read the same backward as forward. Among the various problems in string manipulation…

Jan 26, 2025 · 4 min read · 1 claps paywalled #expand-around-center #longestpalindromicsubstr #rust

TCH LIF

RU Ruben Lazarus

Validating a Sudoku Board in Rust: A Step-by-Step Guide

Introduction

Jan 17, 2025 · 3 min read · 0 claps paywalled #rust #rust-programming-language #leetcode

TCH

RU Ruben Lazarus

Efficiently Finding Start and End Indices in a Sorted Array Using Rust

When working with sorted arrays, a common problem is finding the starting and ending positions of a target element. This problem can be…

Jan 16, 2025 · 3 min read · 0 claps paywalled #rust #rust-programming-language #leetcode

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RU Ruben Lazarus

Efficiently Searching in a Rotated Sorted Array Using Rust

In this article, we will delve into the problem of searching for a target value in a rotated sorted array. We’ll understand the problem…

Jan 14, 2025 · 3 min read · 1 claps paywalled #rotated-sorted-array #rust-programming-language #rust

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RU Ruben Lazarus

Understanding and Implementing Next Permutation in Rust

Introduction

Jan 10, 2025 · 3 min read · 0 claps paywalled #next-permutation #rust #rust-programming-language

MDA TCH AI

RU Ruben Lazarus

Understanding Rust’s Approach to Integer Division Without / Operator

Rust is known for its emphasis on safety, performance, and expressiveness. In this article, we’ll dive deep into a Rust implementation for…

Jan 03, 2025 · 4 min read · 1 claps paywalled #rust #rust-programming-language #leetcode

ECO

MU Muhammad Osama

Finding a Peak Element in an Array with Binary Search

When working with arrays, a common problem is finding a peak element. A peak element is defined as an element that is greater than its…

Dec 27, 2024 · 2 min read · 0 claps #binary-search #arrays #peak

VI Vikas Singh

LeetCode: 769 Max chunks to make sorted

Problem Statement

Dec 20, 2024 · 1 min read · 0 claps paywalled #leetcode #sorting #concatenate

MU Muhammad Osama

Optimizing Solutions to the “Equal Row and Column Pairs” Problem on LeetCode

Introduction

Dec 19, 2024 · 3 min read · 0 claps #leetcode #leetcode-medium #arrays

MU Muhammad Osama

Binary Search in Rotated Array

Problem Statement

Nov 18, 2024 · 3 min read · 5 claps #leetcode #leetcode-medium #search-rotated-sorted-arr

MU Muhammad Osama

Efficiently Finding the Lowest Common Ancestor in a Binary Search Tree

When dealing with binary trees, one common problem you might encounter is finding the Lowest Common Ancestor (LCA) of two nodes. The LCA of…

Nov 05, 2024 · 2 min read · 0 claps #leetcode #leetcode-medium #trees

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MU Muhammad Osama

Summing Root-to-Leaf Numbers in a Binary Tree: A Depth-First Search Approach in C++

The provided C++ code solves the problem of finding the sum of all root-to-leaf numbers in a binary tree. Each path from the root to a leaf…

Oct 27, 2024 · 2 min read · 0 claps #binary-tree #leetcode #leetcode-medium

MU Muhammad Osama

Optimizing “Minimum Steps” in String Processing Using C++

In this post, we will walk through a C++ solution for a problem where the goal is to calculate the minimum number of steps required to…

Oct 27, 2024 · 2 min read · 0 claps #leetcode-medium #two-pointers #black

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TA Tasmia Binte Monzoor

287. Find the Duplicate Number Leetcode | Using Tortoise and Hare Algorithm

The given code is an implementation of Floyd’s Tortoise and Hare (Cycle Detection) algorithm, which is often used to solve problems like…

Sep 23, 2024 · 3 min read · 0 claps #leetcode-medium #floyd-cycle-detection #find-the-duplicate-number

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FA Fatma Erturk

LeetCode 5. Longest Palindromic Substring (Medium)

Given a string s, return the longest palindromic substring in s.

Jul 21, 2024 · 1 min read · 6 claps #leetcode #leetcode-medium #longestpalindromicsubstr