Leetcode Problem 1903. Largest Odd Number in String

1903. Largest Odd Number in String

Leetcode Solutions

Iterate over the characters of num from right to left.
For each character, check if it is an odd digit by casting it to an integer and taking its value mod 2.
If an odd digit is found, return the substring of num starting at index 0 and ending with the index of the found odd digit.
If no odd digit is found by the end of the iteration, return an empty string.

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