Question

Write a program to enter the names and marks of forty students in 2one-dimensional arrays. Sort the marks in descending order using the selection sort method. Display the correspondingly sorted names and marks with proper headings.

Answer 1

Explanation:

import java.util.Scanner;

class Students

{

public static void main(String[] args)

{

String n[] = new String[35];

int p[] = new int[35];

Scanner in = new Scanner(System.in);

for (int i = 0; i < 35; i++)

{

System.out.print("Enter name " + (i + 1) + ": ");

n[i] = in.nextLine();

System.out.print("Enter percentage: ");

p[i] = in.nextInt();

in.nextLine();

}

//selection sort

int l=p.length;

for (int i=0; i<l-1; i++)

{

int pos = i;

for (int j=i+1; j<l; j++)

{

if (p[j] > p[pos])

{

pos = j;

}

}

// Swap percentage

int t1 = p[pos];

p[pos] = p[i];

p[i] = t1;

// Swap name

String t2 = n[pos];

n[pos] = n[i];

n[i] = t2;

}

// Print top 10 Students

System.out.println("RANK \t NAME \t PERCENTAGE");

for (int i = 0; i < 10; i++)

{

System.out.println((i+1) + " \t " + n[i] + " \t " + p[i]);

}

}

}