- Sansa and XOR

# Sansa and XOR

# Sansa and XOR

Sansa has an array. She wants to find the value obtained by XOR-ing the contiguous subarrays, followed by XOR-ing the values thus obtained. Determine this value.

**Example**

```
Subarray Operation Result
3 None 3
4 None 4
5 None 5
3,4 3 XOR 4 7
4,5 4 XOR 5 1
3,4,5 3 XOR 4 XOR 5 2
```

Now we take the resultant values and XOR them together:

. Return .

**Function Description**

Complete the *sansaXor* function in the editor below.

sansaXor has the following parameter(s):

*int arr[n]:*an array of integers

**Returns**

*int:*the result of calculations

**Input Format**

The first line contains an integer , the number of the test cases.

Each of the next pairs of lines is as follows:

- The first line of each test case contains an integer , the number of elements in .

- The second line of each test case contains space-separated integers .

**Constraints**

**Sample Input**

```
2
3
1 2 3
4
4 5 7 5
```

**Sample Output**

```
2
0
```

**Explanation**

*Test case #00:*

*Test case #01:*