g1001_1100.s1012_numbers_with_repeated_digits.Solution

public class Solution extends Object

1012 - Numbers With Repeated Digits.

Hard

Given an integer n, return the number of positive integers in the range [1, n] that have at least one repeated digit.

Example 1:

Input: n = 20

Output: 1

Explanation: The only positive number (<= 20) with at least 1 repeated digit is 11.

Example 2:

Input: n = 100

Output: 10

Explanation: The positive numbers (<= 100) with atleast 1 repeated digit are 11, 22, 33, 44, 55, 66, 77, 88, 99, and 100.

Example 3:

Input: n = 1000

Output: 262

Constraints:

Class Solution

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