## README ¶

### 993. Cousins in Binary Tree

In a binary tree, the root node is at depth 0, and children of each depth k node are at depth k+1.

Two nodes of a binary tree are cousins if they have the same depth, but have different parents.

We are given the root of a binary tree with unique values, and the values x and y of two different nodes in the tree.

Return true if and only if the nodes corresponding to the values x and y are cousins.

Example 1:

```
Input: root = [1,2,3,4], x = 4, y = 3
Output: false
```

Example 2:

```
Input: root = [1,2,3,null,4,null,5], x = 5, y = 4
Output: true
```

Example 3:

```
Input: root = [1,2,3,null,4], x = 2, y = 3
Output: false
```

Note:

- The number of nodes in the tree will be between 2 and 100.
- Each node has a unique integer value from 1 to 100.