Write a program that will read the integer values from the data file
hw28_1.in into an array variable. Your program
should then use the
attached subroutine to sort the values in the array in increasing order.
You should print out the array before and after sorting to verify
that it is working.
The calling sequence for the subroutine is
CALL qsort(array,1,length)where array is the array to be sorted and length is the number of elements in the array.
To compile the program, use the syntax
gfortran -fbounds-check yourmain.f90 qsort.f90