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The optimal approach is to increment the day and check whether it exceeds the valid number of days in the current month. If it does, reset the day to 1 and increment the month, handling year rollover when the month exceeds 12. Leap years must be considered when calculating the number of days in February.
A simple array or list storing the number of days in each month is typically sufficient. The value for February can be adjusted dynamically depending on whether the given year is a leap year.
Yes, date manipulation problems like Next Day are sometimes used in interviews to test edge-case handling and logical thinking. They evaluate a candidate’s ability to manage conditional logic and boundary cases correctly.
Leap years occur when the year is divisible by 4, except for years divisible by 100 unless they are also divisible by 400. When a year is a leap year, February has 29 days instead of 28. This rule ensures the next date calculation remains correct for February transitions.
