[SOLVED] CS代考计算机代写 algorithm /* Reads a 128 kB file onto the stack and “sorts” the bytes in

/* Reads a 128 kB file onto the stack and “sorts” the bytes in
it, using quick sort, a multi-pass divide and conquer
algorithm.The sorted data is written back to the same file
in-place. */

#include
#include
#include “tests/lib.h”
#include “tests/main.h”
#include “tests/vm/qsort.h”

const char *test_name = “child-qsort”;

int
main (int argc UNUSED, char *argv[])
{
int handle;
unsigned char buf[128 * 1024];
size_t size;

quiet = true;

CHECK ((handle = open (argv[1])) > 1, “open ”%s””, argv[1]);

size = read (handle, buf, sizeof buf);
qsort_bytes (buf, sizeof buf);
seek (handle, 0);
write (handle, buf, size);
close (handle);

return 72;
}