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Given a number **N,** complete the following tasks,

Task 1. Generate a new number from N by changing the zeroes in the binary representation of N to 1.

Task 2. Find the difference between N and the newly generated number.

**Example 1:**

**Input:** **N = **8
**Output: **7 15
**Explanation:**
There are 3 zeroes in binary representation
of 8. Changing them to 1 will give 15.
Difference between these two is 7.

**Example 2:**

**Input:** **N = **6
**Output: **1 7
**Explanation:**
There is 1 zero in binary representation
of 6. Changing it to 1 will give 7.
Difference between these two is 1.

**Your Task:**

You don't need to read input or print anything. Your task is to complete the function **changeBits()** which takes an integer N as input parameter and returns a list of two integers containing the difference and the generated number respectively.

**Expected Time Complexity:** O(log(N))

**Expected Auxiliary Space:** O(1)

**Constraints:**

0 <= N <= 10^{8}

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