| 88. 合并两个有序数组 | 2 | https://leetcode-cn.com/problems/merge-sorted-array |
| 3. 无重复字符的最长子串 | 2 | https://leetcode-cn.com/problems/longest-substring-without-repeating-characters |
| 70. 爬楼梯 | 2 | https://leetcode-cn.com/problems/climbing-stairs |
| 384. 打乱数组 | 2 | https://leetcode-cn.com/problems/shuffle-an-array |
| 104. 二叉树的最大深度 | 1 | https://leetcode-cn.com/problems/maximum-depth-of-binary-tree |
| 206. 反转链表 | 1 | https://leetcode-cn.com/problems/reverse-linked-list |
| 46. 全排列 | 1 | https://leetcode-cn.com/problems/permutations |
| 704. 二分查找 | 1 | https://leetcode-cn.com/problems/binary-search |
| 7. 整数反转 | 1 | https://leetcode-cn.com/problems/reverse-integer |
| 121. 买卖股票的最佳时机 | 1 | https://leetcode-cn.com/problems/best-time-to-buy-and-sell-stock |
| 509. 斐波那契数 | 1 | https://leetcode-cn.com/problems/fibonacci-number |
| 231. 2的幂 | 1 | https://leetcode-cn.com/problems/power-of-two |
| 剑指 Offer 10- I. 斐波那契数列 | 1 | https://leetcode-cn.com/problems/fei-bo-na-qi-shu-lie-lcof |
| 102. 二叉树的层序遍历 | 1 | https://leetcode-cn.com/problems/binary-tree-level-order-traversal |
| 169. 多数元素 | 1 | https://leetcode-cn.com/problems/majority-element |
| 110. 平衡二叉树 | 1 | https://leetcode-cn.com/problems/balanced-binary-tree |