Why the DP State Machine Works | Best Time to Buy & Sell Stock II | LeetCode 122
Автор: Soul Dev
Загружено: 2026-03-07
Просмотров: 20
Описание:
Everyone solves LeetCode 122 with greedy. But the DP State Machine approach reveals the deeper structure of the problem — two states, two transitions, one clean recurrence. In this video, I prove why the state machine is correct and how it generalises to the entire stock problem family.
WHAT YOU'LL LEARN:
✅ How to model stock trading as a DP state machine
✅ Why DP beats greedy in insight — even when both give O(n)
✅ How to extend this exact template to LC 309 (Cooldown) and LC 123 (2 transactions)
📌 PROBLEM LINK: https://leetcode.com/problems/best-ti...
PREVIOUS VIDEO → • LeetCode 121 Explained Mathematically | Be...
────────────────────────────────
🔔 Subscribe for deep mathematical & DP explanations of LeetCode problems,
CSES solutions, and system design case studies — for people who want to
understand, not memorize.
────────────────────────────────
#LeetCode #LeetCode122 #DynamicProgramming #DP #StateMachine #DSA
#DataStructuresAndAlgorithms #CodingInterview #LeetCodeMedium
#CompetitiveProgramming #FAANG #SoftwareEngineering #codewithsouldev
#BuySellStock #DPStateMachine #CPP #Python #Java #LeetCodeDP
Повторяем попытку...
Доступные форматы для скачивания:
Скачать видео
-
Информация по загрузке:
