Question

Write a program for the following.

Create a String array WR[ ] and an integer array WL[], both of size 10. Input/Store names of World Rivers. Arrange the River Names in ascending order of their lengths.

Answer 1

import java.util.*;
class clTask
{
   void main()
   {
      Scanner sc = new Scanner(System.in);
      String WR[] = new String [10];
      int WL[] = new int[10];
      for(int { j = 0; j <= 9; j++)
      {
      System.out.print("Enter River num" +j+" :");
      WR[j] = sc.nextLine();
      System.out.print("Enter its length ");
      WL[j] = sc.nextInt();
      String buf = sc.nextLine(); // to clear buffer
   }
   for(int j = 0; j <= 8; j++)
      {
        for(int k = 0; k <= 8 − j; k++)
        {
            if(WL[k] > WL[k + 1])
            {
               int tmpi = WL[k];
               WL[k] = WL[k + 1];
               WL[k + 1] = tmpi;
               String tmps = WR[k];
               WR[k] = WR[k + 1];
               WR[k + 1] = tmps;
            }
        }
     }
     System.out.println("In Ascending Order of size: ");
     for(int j = 0; j<=9; j++)
     {
           System.out.println("River : " + WR[j] +" Length:" + WL[j]);
     }
   }
}

Output:

Enter River num 0	IRTYSH
Enter its length 5410
Enter River num 1	MISSISSIPI
Enter its length 6275
Enter River num 2	ARGUN
Enter its length 4444
Enter River num 3	YELLOW
Enter its length 5464
Enter River num 4	YANGTZE
Enter its length 6300
Enter River num 5	LENA
Enter its length 4400
Enter River num 6	CHAMBESHI
Enter its length 4700
Enter River num 7	NILE
Enter its length 6650
Enter River num 8	YENISEI
Enter its length 5539
Enter River num 9	AMAZON
Enter its length 6400

In Ascending Order of size:
River	LENA	Length	4400
River	ARGUN	Length	4444
River	CHAMBESHI	Length	4700
River	IRTYSH	Length	5410
River	YELLOW	Length	5464
River	YENISEI	Length	5539
River	MISSISSIРІ	Length	6275
River	YANGTZE	Length	6300
River	AMAZON	Length	6400
River	NILE	Length	4450