LeetCode 1169 Explained | Invalid Transactions – Step-by-Step Solution
Автор: Code 007
Загружено: 2026-01-10
Просмотров: 6
In this video, we solve *LeetCode 1169 – Invalid Transactions* step by step.
We break down the problem statement, identify the key conditions that make a transaction invalid, and then implement a clean and efficient solution. This problem is a great example of how careful problem analysis and data structuring can simplify seemingly complex logic.
📌 What you’ll learn:
How to interpret real-world constraints in coding problems
How to group and compare transactions efficiently
Common pitfalls to avoid in LeetCode string-parsing problems
Writing clean and readable logic for interview-style questions
🧠 Problem Overview:
A transaction is invalid if:
The amount exceeds $1000, or
The same person makes another transaction in a different city within 60 minutes
🔧 Topics Covered:
Hash maps
String parsing
Iteration and comparison logic
💻 Difficulty:
Medium
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🔗 LeetCode Problem Link:
https://leetcode.com/problems/invalid...
#leetcode #codinginterview #dsa #algorithms #programming #softwareengineering
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