Leetcode Problem 1796. Second Largest Digit in a String

1796. Second Largest Digit in a String

Leetcode Solutions

Initialize an empty set to store unique digits.
Iterate over each character in the string.
If the character is a digit, add it to the set.
Convert the set to a list and sort it in descending order.
If the sorted list has less than two elements, return -1.
Otherwise, return the second element in the sorted list, which is the second largest digit.

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