| ID | Problem Show tags Hide tags | AC / Tried | Difficulty | |
|---|---|---|---|---|
| 145 | DSA0507 一般树转二叉树 | 7 / 31 | 2 | |
| 146 | DSA0508 二叉树转一般树 | 6 / 7 | 2 | |
| 147 | DSA0509 有根有序树的二叉树形式层次遍历 | 7 / 21 | 2 | |
| 135 | DSA1004 有根有序树的后序遍历 | 13 / 56 | 2 | |
| 166 | DSA1005 无向图的最小环问题 | 6 / 16 | 3 |
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