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Vector test


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Vector test
What will be the output of the following program?
import java.util.*;
public class Hp00001 {
    public static void main(String[] args) {
        Vector vect = new Vector();
        vect.add("1");    vect.add("2");
        vect.add("3");    vect.add("4");
        vect.add("5");    vect.add("6");
        vect.add("7");    vect.add("8");
        vect.add("9");    vect.add("10");
        vect.add("11");
        Object[] obj = new Object[11];
        vect.copyInto(obj);
        Arrays.sort(obj);
        Collections.reverse(vect);
        for (int index = 0; index < 11; index++)
            if (vect.get(index) != obj[index])
                System.out.print(vect.get(index) + " ");
    }
}

A. 1 2 3 4 6 7 8 9 10 11
B. 1 2 3 4 6 7 8 9 11
C. 11 10 9 8 7 6 4 3 2 1
D. 11 9 8 7 6 4 3 2 1
E. Compilation Error or Runtime Error
Topic: Java Vector

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User comments below. All of them might not be correct.

option d is ans because the numbers are copied into obj and sorted and vect numbers are reversed then at 10 and 5 they become equal.. so they are not printed

Posted by Sai Lalitha Renduchintala    2013-05-07 12:36:54


c

Posted by Yeshu Yeshwanthi    2013-05-07 12:39:01


none of the given options is right..the sequence should be 11 10 9 8 7 5 4 3 2 1

Posted by Soumya Tata    2013-05-07 12:46:51


The answer is option D :: initially the vect numbers are copied into "obj" then the numbers are sorted as 1,2,3,4,5,6,7,8,9,10,11 then are reversed now..as..11,10,9,8,7,6,5,4,3,2,1 then at this point 10 and 5 bcome equal..!! thus the if condition is not satified hence 10 and 5 are not printed...thus it prints the rest of all vect numbers..i.e 11,9,8,7,6,4,3,2,1 ! hence the output will be D accordingly !! :)

Posted by Anchal Shetty    2013-05-07 12:51:59


ans is d as values in obj are of string type..sort array contains 1,10,11,2,3,4... wen dey r compared at index 1 dey'll bcom equal

Posted by Teja Potlapally    2013-05-07 12:55:11


option is d bcoz here sort function on strings sorts the values to 1 10 11 2 3 4 5 6 7 8 9...here as the sorting occurs on string function ,the values 10 and 11 comes bfore other values as the ascii value of 1 is less tahn ascii of 2 n so on...other than dat the values at the end are 1 10 11 2 3 4 5 6 7 8 9 in obj n 1 2 3 4 5 6 7 8 9 in vect.. here der is a match at 5 and 10 ..xcept dose values are printed..so output is 11 9 8 7 6 4 3 2 1

Posted by Pramod Jain    2013-05-07 13:04:23


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Posted by Merit Campus    2013-05-07 15:40:13


ty mc received recharge...

Posted by Sai Lalitha Renduchintala    2013-05-11 06:06:14


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