Find Max Number of Pairs

Given an array, find the numbers with t

Example 1

Input:

nums = [1, 9, 23, 30, 54, 103]

Output:

4

Explanation: The possible pairs with the same number of digits are:

• {1, 9}
• {23, 30}
• {23, 54} There are a total of 4 different pairs, so the output is 4.