leetcode练习记录
| Num | Title | Java | Python | Difficulty |
|---|---|---|---|---|
| 232 | Implement Queue using Stacks | √ | x | ★ |
| 226 | Invert Binary Tree | × | √ | ★ |
| 225 | Implement Stack using Queues | × | √ | ★★ |
| 219 | Contains Duplicate II | × | √ | ★ |
| 217 | Contains Duplicate | × | √ | ★ |
| 206 | Reverse Linked List | × | √ | ★ |
| 205 | Isomorphic Strings | × | √ | ★ |
| 179 | Largest Number | × | √ | ★★ |
| 174 | Dungeon Game | × | √ | ★★★ |
| 172 | Factorial Trailing Zeroes | × | √ | ★ |
| 151 | Reverse Words in a String | × | √ | ★★ |
| 150 | Evaluate Reverse Polish Notation | × | √ | ★★ |
| 141 | Linked List Cycle | √ | × | ★★ |
| 125 | Valid Palindrome | × | √ | ★ |
| 118 | Pascal's Triangle | √ | × | ★ |
| 88 | Merge Sorted Array | × | √ | ★ |
| 69 | Sqrt(x) | √ | √ | ★★ |
| 2 | Add Two Numbers | × | √ | ★★ |
| 1 | Two Sum | × | √ | ★★ |
Difficulty: Easy = ★ Medium = ★★ Hard = ★★★