Question

Fix Java Code

Question:

Coding AList Get Position

Write a method for the AList class that returns the first position of a given object in the list with the method header below.

public int getPosition(T anObject)

Answer:

public int getPosition(T anObject) {

int position = 0;

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

if (list[i].equals(anObject)) {

position = i + 1;

}

return position;

}

Answer 1

JAVA CODE

============================================================================================

package hello;

import java.util.*;
public class listClass1 {

   //take two arguments list and object to search
   public int getPosition(List ob,Object anObject) {

       int position;
       //return -1 if not found
       position=ob.indexOf(anObject);
      
       return position;
       }
  
   public static void main(String[] args) {
       // TODO Auto-generated method stub
       List ob = new ArrayList();
       ob.add("abc");
       ob.add(23);
       ob.add(2);
       ob.add(2.1);
       ob.add("sunil");
       ob.add('c');

System.out.println("List is "+ob);
listClass1 o1=new listClass1();

int pos;
pos=o1.getPosition(ob,"dd");
if(pos==-1)
System.out.println("dd is not found in a list");
else
   System.out.println("dd is found in a list at index "+pos);  

pos=o1.getPosition(ob,2.1);
if(pos==-1)
System.out.println("2.1 is not found in a list");
else
   System.out.println("2.1 is found in a list at index "+pos);

   }

}

============================================================================================

Output