Thread: sort elements of 2D matrix by 1st column reference

Hi everyone,

I am writing a function that needs to sort the rows of a 2D matrix in ascending order.
To so, I first wrote the function to treat a 1D array and, by analogy, tried to build one that takes an array of pointers as argument, but I am not sure where I am doing that wrong, since I am not getting the sorted array in return.

I post my code below, I hope someone can help
All the best
cfd

In the following code, *array[] that is passed is a 2D matrix of "lenght" rows and 6 columns:

Code:

void sortAscend(float *array[], int length)
{
  int i, j, temp, test;
  
	for(i = length - 1; i > 0; i--)
	{
    test=0;
    	for(j = 0; j < i; j++)
    	{
    	  if(*array[1] > *(array[1]+1)) /* compare neighboring elements */
    	  {
    	    temp = *array[1];    	/* swap array[j] and array[j+1] */
    	    *array[1] = *(array[1]+1);
    	    *(array[1]+1) = temp;
    	    test=1;
    	  }
    	} /*end for j*/
    	if(test==0) break; /*will exit if the list is sorted!*/
	} /*end for i*/
 }