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Problem of the day

You are given an array 'ARR' consisting of 'N' integers. You need to rearrange the array elements such that all negative numbers appear before all positive numbers.

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The order of elements in the resulting array is not important.
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Let the array be [1, 2, -3, 4, -4, -5]. On rearranging the array such that all negative numbers appear before all positive numbers we get the resulting array [-3, -5, -4, 2, 4, 1].
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Detailed explanation

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The very first line of input contains an integer ‘T’ denoting the number of test cases.
The first line of every test case contains an integer ‘N’ denoting the number of elements present in the array.
The second line of every test case contains ‘N’ space-separated integers denoting the elements present in the array.
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For each test case, “Yes” is printed if the resulting array is correct otherwise “No”.
Output for each test case is printed on a separate line.
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```
1 <= T <= 10
1 <= N <= 5 * 10^4
-10^5 <= ARR[i] <= 10^5
Where ‘T’ represents the number of test cases and ‘N’ represents the number of elements present in the array.
Time Limit: 1 sec
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```
2
5
1 -4 -2 5 3
2
2 1
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Yes
Yes
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For the first test case we have, array: [1, -4, -2, 5, 3] and N = 5. On rearranging the array such that all negative numbers appear before all positive numbers we get the resulting array [-2, -4, 1, 5, 3].
For the second test case we have, array: [2, 1] and N = 2. There are no negative numbers. Hence, we do not require any rearrangement.
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```
3
4
1 -5 -5 3
5
-1 -2 3 4 5
1
-2
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Yes
Yes
Yes
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For the first test case we have, array: [1, -5, -5, 3] and N = 4. On rearranging the array such that all negative numbers appear before all positive numbers we get the resulting array [-5, -5, 1, 3].
For the second test case we have, array: [-1, -2, 3, 4, 5] and N = 5. There are already arranged in required way. Hence, we do not require any rearrangement.
For the third test case we have, array: [-2 ] and N = 1. The array is already arranged in required way. Hence, we do not require any rearrangement.
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