leetcodehard

#leetcodehard

0 followers·9 articles

leetcodehard

#leetcodehard·0 followers·9 articles

Anni Huang

huanganni.hashnode.dev·Jul 20, 2025

Jul 20, 2025

LeetCode Daily Challenge-LeetCode 1948 Delete Duplicate Folders in System-Two Solutions(Hard, Java)

Discuss·5 reads

array

Anni Huang

huanganni.hashnode.dev·Jul 18, 2025

Jul 18, 2025

LeetCode Daily Challenge-2163: Minimum Difference in Sums After Removal of Elements(Hard, Java, DP+priorityQueue+greedy)

Discuss·2 reads

array

Anni Huang

huanganni.hashnode.dev·Jul 14, 2025

Jul 14, 2025

LeetCode 460 LFU Cache (Hard, Java)

Discuss·2 reads

LFU cache

Anni Huang

huanganni.hashnode.dev·Jul 07, 2025

Jul 07, 2025

4. Median of Two Sorted Arrays: From intuitive to optimized(Java, Hard)

Discuss·2 reads

leetcode-solution

Anni Huang

huanganni.hashnode.dev·Jul 05, 2025

Jul 05, 2025

Trapping Rain Water: From Intuitive to Optimized Solutions - Top Tech & Investment Banking Interview Guide (Java, Hard, O(n))

Discuss·7 reads

Zopsmart

Anni Huang

huanganni.hashnode.dev·Jul 04, 2025

Jul 04, 2025

LeetCode Daily Challenge-3333: Find the Original Typed String II - Advanced Dynamic Programming Solution(Hard)

Discuss

Daily LeetCode Challenge

shohanur rahman

shohan777.hashnode.dev·Nov 02, 2024

Nov 02, 2024

Leetcode 233 (Number of Digit One) was fun.

Discuss·3 reads

leetcode

Saurav Maheshwari

xauravww.hashnode.dev·Sep 03, 2024

Sep 03, 2024

Merging K - Sorted Linked Lists

Discuss·9 reads

Data Structures and Algorithms

data structures

Jay Chouksey

jayjava.hashnode.dev·Jul 20, 2024

Jul 20, 2024

First Missing Positive

Discuss·6 reads

leetcodehard

Changelog

New steps component and improved accessibility on Hashnode's blog and docs product.

Nov 05, 2024·

new

Cutting Out the Middlemen: How Mobile Wallet Is Reshaping Digital Paymen

Naomi Antia Benson·60 reads

Creditlink: Redefining Trust in Web3 With On-Chain Credit Scoring.

Patience Uyire·20 reads

How WiFi Map Turns Everyday Actions Into On-Chain Rewards

Naomi Antia Benson·33 reads

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