LeetCode 2777: Date Range Generator Solution

Master LeetCode problem 2777 (Date Range Generator), a medium challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.

2777. Date Range Generator

Medium

Problem Explanation

Explanation:

The problem asks us to design a date range generator that takes a start date, end date, and a frequency as input, and generates a list of dates within the given range based on the specified frequency.

Algorithm:

Parse the input start date, end date, and frequency.
Initialize an empty list to store the generated dates.
Iterate from the start date to the end date based on the frequency, and add each date to the list.
Return the list of generated dates.

Time Complexity: The time complexity of this algorithm is O(N), where N is the number of dates in the generated range.

Space Complexity: The space complexity of this algorithm is O(N), where N is the number of dates in the generated range.

Solution Code

import java.time.LocalDate;
import java.util.ArrayList;
import java.util.List;

public class DateRangeGenerator {

    public List<LocalDate> generateDateRange(LocalDate startDate, LocalDate endDate, int frequency) {
        List<LocalDate> dateRange = new ArrayList<>();
        
        for (LocalDate date = startDate; !date.isAfter(endDate); date = date.plusDays(frequency)) {
            dateRange.add(date);
        }
        
        return dateRange;
    }
}

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