You are given an integer num. You will apply the following steps to num two separate times:
x (0 <= x <= 9).y (0 <= y <= 9). Note y can be equal to x.x in the decimal representation of num by y.Let a and b be the two results from applying the operation to num independently.
Return the max difference between a and b.
Note that neither a nor b may have any leading zeros, and must not be 0.
Example 1:
Input: num = 555 Output: 888 Explanation: The first time pick x = 5 and y = 9 and store the new integer in a. The second time pick x = 5 and y = 1 and store the new integer in b. We have now a = 999 and b = 111 and max difference = 888
Example 2:
Input: num = 9 Output: 8 Explanation: The first time pick x = 9 and y = 9 and store the new integer in a. The second time pick x = 9 and y = 1 and store the new integer in b. We have now a = 9 and b = 1 and max difference = 8
Constraints:
1 <= num <= 108