Solution: Largest Odd Number in String
Explore how to identify the largest odd integer substring from a large numeric string using a greedy technique. This lesson teaches you to scan the string from the end to find the rightmost odd digit and extract the substring efficiently with linear time complexity and constant space usage.
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We'll cover the following...
Statement
You are given a string, num, which represents a large integer. Your task is to find the largest odd-valued integer that can be formed as a non-empty substring of num. Return this odd integer as a string. If no odd integer exists, return an empty string ("").
Note: A substring is a continuous sequence of characters within a string.
Constraints:
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