Question

Code Using Arrays in Java

There is a new ruling for the only elevator located at Block B. Students who need to ride the elevator, must line up in a queue. The rated load in pounds for the elevator is based on the inside net platform areas. The maximum load for the elevator is 500 pound.

Write a program to read the students weight (in pound) in the line and calculate the number of students that are allowed to enter the elevator before it makes a loud noise.

Input

The first line of input is T (1 ≤ T ≤ 100) which is the number of test case. This is followed by T lines of input. Each line starts with X (X ≤ 100) which is the number of students who want to ride the elevator. This is then followed by a list of X data which is the students’ weight in the line.

Output

For each test case, the output contains a line in the format "Case #x: y", where x is the case number (starting from 1) and y indicates the number of students in the line that are allowed to ride the elevator.

Sample Input

3
9 45 25 50 46 10 55 50 83 68
5 66 155 93 101 90 
8 64 70 50 45 85 74 110 95 

Sample Output

Case #1: 9
Case #2: 4
Case #3: 7

Answer 1

Code below:

import java.util.Scanner;

public class Elevator {

    private static final int MAX_LOAD_ALLOWED = 500;

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        // take number of test cases as input.
        int t = scanner.nextInt();

        int[] numberOfStudentsAllowed = new int[t];

        for (int caseNumb = 0; caseNumb < t; ++caseNumb) {

            // take inputs per test case.
            int n = scanner.nextInt();
            int[] studentsWeightsArray = new int[n];

            // defaulting students allowed to value n for every case Numb.
            numberOfStudentsAllowed[caseNumb] = n;

            for (int i = 0; i < n; ++i) {
                studentsWeightsArray[i] = scanner.nextInt();
            }

            // find the total number of students that will be allowed.
            int tempSum = 0;
            for (int i = 0; i < n; ++i) {

                tempSum += studentsWeightsArray[i];
                if (tempSum > MAX_LOAD_ALLOWED) {
                    numberOfStudentsAllowed[caseNumb] = i;
                }
            }

        }

        // Print the outputs.
        for (int i = 0; i < t; ++i) {

            System.out.println("Case #" + (i + 1) + ": " + numberOfStudentsAllowed[i]);

        }
    }

}

Sample input output

Sample code for indentation