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Arrange Guest Check-ins

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Imagine you’re the manager of a luxury resort and you need to organize your daily check-in logs to visualize peak guest traffic. That’s the mission of Arrange Guest Check-ins! You’re given an array of integers representing guest arrival counts, and your task is to rearrange them into a clean, ascending sequence from lowest to highest frequencies.

The "secret sauce" here is handling Data Integrity. Your list might include duplicate counts (identical arrival patterns) or even negative values (which represent net departures during off-peak times). A professional solution must preserve all of these numbers while rearranging them in a non-decreasing order. An empty check-in log should return an empty list, ensuring your system remains robust and reliable for resource planning and staff allocation analysis.

This challenge is a great way to master basic data sorting with a focus on real-world accuracy. It ensures that your logs are always ready for the next level of business analysis and reporting!

If sorting is part of the strategy, do it intentionally as a preprocessing step to simplify downstream logic such as merging, ordering, or comparison. After sorting, keep output semantics precise: preserve expected structure, avoid dropping valid entries, and ensure tied cases still follow deterministic order rules.

Examples

Example 1
Input
arrivals = [12, 3, 18, 3, 6]
Output
[3, 3, 6, 12, 18]
Explanation

The sorted view places the smallest arrival counts first so the desk schedules staff accordingly.

Example 2
Input
arrivals = [-2, -2, 7, 4, 0]
Output
[-2, -2, 0, 4, 7]
Explanation

Negative values appear first because they reflect cancellations before growth later in the day.

Example 3
Input
arrivals = []
Output
[]
Explanation

An empty clipboard stays empty after sorting because there are no counts to reorder.

Algorithm Flow

Recommendation Algorithm Flow for Arrange Guest Check-ins - Budibadu
Recommendation Algorithm Flow for Arrange Guest Check-ins - Budibadu

Best Answers

java
import java.util.*;

class Solution {
    public int[] arrange_guest_check_ins(int[] arrivals) {
        int[] sortedArr = arrivals.clone();
        Arrays.sort(sortedArr);
        return sortedArr;
    }
}