题目描述：
LeetCode 1015. Numbers With Repeated Digits
Given a positive integer N, return the number of positive integers less than or equal to N that have at least 1 repeated digit.
Example 1:
Input: 20 Output: 1 Explanation: The only ...
LeetCode 1015. Numbers With Repeated Digits
Given a positive integer N, return the number of positive integers less than or equal to N that have at least 1 repeated digit.
Example 1:
Input: 20 Output: 1 Explanation: The only ...