Level of a Node in Binary Tree
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Given a Binary Tree and a target key, your task is to complete the function getLevel() that returns the level of the key from the given binary tree.

           3
/   \
2     5
/   \
1     4
Key: 4
Level: 3  

Note: if no such key exsits then return 0.
Input:
The function takes 2 arguments as input, first the reference pointer to the root node of the binary tree and a integer value target. There will be multiple test cases and for each test the function will be called seperately.

Output:
For each test return the level of the target value from the binary tree.

Constraints:
1<=T<=100
1<=N<=100

Example:
Input:

2
2
1 2 L 1 3 R
2
5
1 2 R 1 3 L 2 4 L 2 5 R 4 7 L
7
Ouput:
2
4

Note:The Input/Ouput format and Example given are used for system's internal purpose, and should be used by a user for Expected Output only. As it is a function problem, hence a user should not read any input from stdin/console. The task is to complete the function specified, and not to write the full code.

#### ** For More Input/Output Examples Use 'Expected Output' option **

Author: harshitsidhwa