What is the second largest element of [5, 5, 5]?
It does not exist. The only distinct value is 5. Your code should recognize this and return a sentinel value like -1 or throw an exception.
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More FAQs in Handling Arrays with Duplicate Elements
If not explicitly ignored, a duplicate of the maximum value will overwrite the second largest variable, resulting in both variables holding the maximum value.
Add a logical AND condition (current != max) when evaluating whether to update the second largest variable.
If the current value equals the max, the first condition (current > max) fails. It falls to the second condition, which also fails because of the current != max check, safely ignoring the duplicate.
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