# 棧練習題

| 題號 | 題目名稱| 難度 | 備註 | 題解 |
| ---- | ------------------------------------------------------------------------ | -------------------------------- |:------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------:| ----------------------------------------------------------- |
|20|[Valid parentheses 有效的括號](https://leetcode.cn/problems/valid-parentheses/)|<font color=DarkGreen>Easy</font>|| [有效的括號題解](https://hackmd.io/@paxton0222/SybV719To) |
|232|[Implement queue using stack 使用棧實現隊列](https://leetcode.com/problems/implement-queue-using-stacks/description/)|<font color=DarkGreen>Easy</font>||[使用實現隊列題解](https://hackmd.io/@paxton0222/HyP8dcbeh)|
|682|[Baseball game 棒球比賽](https://leetcode.cn/problems/baseball-game/)|<font color=DarkGreen>Easy</font>|||
|1700|[Number of students unable to eat lunch 無法吃午餐的學生數量](https://leetcode.cn/problems/number-of-students-unable-to-eat-lunch/)|<font color=DarkGreen>Easy</font>|||
|155|[Min Stack](https://leetcode.com/problems/min-stack/description/?envType=study-plan-v2&envId=top-interview-150)|<font color=Orange>Medium</font>||[Min Stack 題解](https://hackmd.io/@paxton0222/H1kiNoa03)|
|150|[Evaluate Reverse Polish Notation](https://leetcode.com/problems/evaluate-reverse-polish-notation/description/?envType=study-plan-v2&envId=top-interview-150)|<font color=Orange>Medium</font>||[Evaluate Reverse Polish Notation 題解](https://hackmd.io/@paxton0222/rkbJ_pTCn)|
|227|[Basic Calculator II](https://leetcode.com/problems/basic-calculator-ii/description/)|<font color=Orange>Medium</font>||[Basic Calculator II 題解](https://hackmd.io/@paxton0222/S1tPT3C0h)|
|224|[Basic Calculator](https://leetcode.com/problems/basic-calculator/description/)|<font color=Red>Hard</font>||[Basic Calculator 題解](https://hackmd.io/@paxton0222/Sy3EXyJJp)|