Start end pointers

#1

i coded using start and end pointers traversing in off dirn…plz check…no test case passed

#2

look at your approach once again
it is not correct it will also change the relative order of other numbers
because you are swaping the element

else if(arr[s]==0)
     {
        swap(s,e,arr);
      }

you just have to put all zeroes at end without changing the relative ordering of other element