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Given a value N, find out the largest palindrome number which is product of two N-digit numbers.

**Example 1:**

Input:N = 2Output:9009Explanation:9009 is the largest number which is product of two 2-digit numbers. 9009 = 91*99.

**Example 2:**

**Input: **N = 1
**Output: **9
**Explanation: **9 is the largest number
which is product of two 1-digit numbers.
3 * 3 = 9.

**Your Task:**

You don't need to read or print anyhting. Your task is to complete the function **LargestProductPalin()** which takes N as input parameter and returns largest palindromic product of 2 N-digit numbers.

**Expected Time Complexity: **O(10^{n+1})

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

**Constraints:**

1 <= N <= 6

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Largest Product Pallindrome

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