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https://leetcode.com/problems/encode-number
Given a non-negative integer num, Return its encoding string.
num
The encoding is done by converting the integer to a string using a secret function that you should deduce from the following table:
Example 1:
**Input:** num = 23 **Output:** "1000"
Example 2:
**Input:** num = 107 **Output:** "101100"
Constraints:
0 <= num <= 10^9
