public class Solution
extends Object
1796 - Second Largest Digit in a String\.
Easy
Given an alphanumeric string `s`, return _the **second largest** numerical digit that appears in_ `s`_, or_ `-1` _if it does not exist_.
An **alphanumeric** string is a string consisting of lowercase English letters and digits.
**Example 1:**
**Input:** s = "dfa12321afd"
**Output:** 2
**Explanation:** The digits that appear in s are [1, 2, 3]. The second largest digit is 2.
**Example 2:**
**Input:** s = "abc1111"
**Output:** -1
**Explanation:** The digits that appear in s are [1]. There is no second largest digit.
**Constraints:**
* `1 <= s.length <= 500`
* `s` consists of only lowercase English letters and/or digits.