g1001_1100.s1012_numbers_with_repeated_digits

Class Solution

java.lang.Object

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:

• 1 <= n <= 109

Constructor Summary

Constructors

Constructor and Description
Solution()

Method Summary

Modifier and Type	Method and Description
int	numDupDigitsAtMostN(int n)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Solution

public Solution()

Method Detail

numDupDigitsAtMostN

public int numDupDigitsAtMostN(int n)