Zoho interview Quest

Try the following code friend may, this will be helpful for you.

class RemoveEvenNumber
{
   int a[] = new int[]{1,2,3,4,5,6};
   int b [] = new int[a.length];  

   public void removeEvenNumber()
     {
          int i = 0;
          while(i< a.length)
             {                  
                 if(a[i] % 2 == 0)
                  {
                     a[i]=0;                     
                  }
                 else if(a[i] % 2== 1)
                  {                       
              b[i]=a[i];                       
                  }
                System.out.print(b[i]+",");                
               i++;
             }                      
      }

   public static void main(String args[])
      {
          RemoveEvenNumber remove = new RemoveEvenNumber();
          remove.removeEvenNumber();         
      }
}

Here is the program :

import java.util.Scanner;

/**
 * @author JavaWithUs 
 * www.javawithus.com
 */
public class RemoveEvenNumbers {

    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        System.out.println("Enter length of array: ");
        int[] arr = new int[s.nextInt()];
        System.out.println("Enter elements:");
        for (int i = 0; i < arr.length; i++) {
            arr[i] = s.nextInt();
        }
        int numberOfZeroes = 0;
        for (int i = 0; i < arr.length; i++) {
            if (arr[i] % 2 == 0) {
                arr[i] = 0;
                numberOfZeroes++;
            }
        }
        System.out.println("Modified array:");

        for (int i = 0; i < arr.length; i++) {
            if (arr[i] != 0) {
                System.out.print(arr[i] + " ");
            }
        }
        for (int i = 0; i < numberOfZeroes; i++) {
            System.out.print("0 ");
        }
    }
}

Here is the output :

Enter length of array: 
6
Enter elements:
1 2 3 4 5 6
Modified array:
1 3 5 0 0 0

To learn about arrays, see these pages :

public class Evenodd {

public static void main(String[] args) {

int g=0,i; int a[ ]={1,2,3,4,5,6}; int n=a.length; for(i=0;i

/*

One Loop and two variables are used. Runtime o(n*n)

*/

public class OneLoopTwoVariables {

public static void main(String x[])
{

    int xArray[]={1,2,3,4,5,6,7};
    int xCnt=0,xTmp=0;

    for(int i=0;i<xArray.length;i++)
    {

            if(xCnt==0 )
            {

                if(xArray[i]%2 == 0)
                    {
                        xArray[i]=0;
                    }

            }

            else if(xCnt == (xArray.length * xArray.length))
            {
                System.out.print(xArray[i]);
            }

            else

            {
                if(xArray[i] == 0)
                {
                    if(i+1 != xArray.length)
                    {
                        xTmp = xArray[i+1];
                        xArray[i+1] = 0;
                        xArray[i] = xTmp;
                    }
                }
            }


        if(i == xArray.length-1) { 

            i=-1; 
            xCnt+=1;

            if(xCnt == (xArray.length * xArray.length)+1){ break; }

        } 

    }

}

}

private int[] a = { 1, 2, 3, 4, 5, 6 };

private void removeEven()
{
for (int i = 0; i < a.length; i++)
{
    if (a[i] == 0 || a[i] % 2 == 0)
    {
    traverseArray(i);
    }
    System.out.print(a[i]);

    if (i != a.length - 1)
    System.out.print(", ");
}
}

private void traverseArray(int i)
{
if (i != a.length - 1)
{
    a[i] = a[i + 1];
    a[i + 1] = 0;

    traverseArray(i + 1);
}
}