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sort function for array elements

sort function for array elements

sort function for array elements

Hi I'm trying to sort an array's elements into sequential order.  When I run my program I am able to read the input from my input file, and then store that input in my array, but I can't get it to sort properly. I've pasted my sort function below.  if you have any ideas please let me know.  Thanks!

void sort (int arr[], int size, int& num_used)
    bool sorted = false;
   while (sorted == false)
       sorted = true;
      for (int index = 0; index < size - 1 && index < num_used - 1; index++)
          if (arr[index] > arr[index+1])
             int tmp = arr[index];
            arr[index] = arr[index+1];
            arr[index+1] = tmp;
            sorted = false;
         }//end if
      }//end for
   }//end while
}//end sort func.  

RE: sort function for array elements

I haven't looked at the entire program cautiously, but one thing instantly caught my eye.

Inside the 'for loop', why are you stating the while condition as  "index < arr.size() - 1". Shouldn't it be "index <= arr.size() - 1". From your while condition, the procedure will not check the last element. Imagine 20 array elements. Your statment says, index < 19. You forget to compare the last two elements. Another valid statement is "index < array.size()"
And even after you corrected it, your "sorted" variable will still read false because of where you have put it. You might want to work on the program again because I am not quite sure if 'tis right.
I am working on a proj. of my own, so I don't have the time to look. Im sure someone else might help.

Narayanan Srinivasan
Brothers and Sisters from India, if you have any recent news regarding F-1 to H-1B visa transfer, please e-mail me. Thanks.

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