Answer to Question #288741 in Java | JSP | JSF for Freq

Question

Write a program to create a single dimension array to store marks of 25 students. Then display the frequency of students in the range of marks:

0-30

31-50

51-75

76-90

91-100

Hint: 1)Use java.util package

2) Use linear searching

Answer 1

import java.util.*;


public class App {


	/**
	 * The start point of the program
	 * 
	 * @param args
	 * 
	 */
	public static void main(String[] args) {
		Scanner keyBoard = new Scanner(System.in);
		int marks[] = new int[25];
		for (int i = 0; i < 25; i++) {
			System.out.print("Enter the mark " + (i + 1) + ": ");
			marks[i] = keyBoard.nextInt();
			keyBoard.nextLine();
		}
		int frequency[] = new int[5];


		for (int i = 0; i < 25; i++) {
			if (marks[i] >= 0 && marks[i] <= 30) {
				frequency[0]++;
			}
			if (marks[i] >= 31 && marks[i] <= 50) {
				frequency[1]++;
			}
			if (marks[i] >= 51 && marks[i] <= 75) {
				frequency[2]++;
			}
			if (marks[i] >= 76 && marks[i] <= 90) {
				frequency[3]++;
			}
			if (marks[i] >= 91 && marks[i] <= 100) {
				frequency[4]++;
			}


		}
		System.out.println("0-30: " + frequency[0]);
		System.out.println("31-50: " + frequency[1]);
		System.out.println("51-75: " + frequency[2]);
		System.out.println("76-90: " + frequency[3]);
		System.out.println("91-100: " + frequency[4]);
		keyBoard.close();
	}


}