Ved

public class OddEvenArraySimplified
{
    public static void main(String args[])
    {
        int oddInd=0;
        int evenInd=1;
        char[] str = "01101010111001011".toCharArray();
        int strLen = str.length-1;
        while(true)
        {
          while(oddInd<strLen && str[oddInd]=='1')
          {
              oddInd+=2;//here
           }
          if(oddInd>=strLen)
                 break;
           while(evenInd<strLen &&str[evenInd]=='0')
           {
              evenInd+=2;//here
           }
           if(evenInd>=strLen)
             break;

            swap(str, evenInd, oddInd);
         }
          for(int i = 0 ;i< strLen; i++)
              System.out.print(str[i] + ",");

        }
    private static void swap(char[] str, int a, int b)
    {
        char tmp = str[a];
        str[a] = str[b];
        str[b]= tmp;
    }
}