// File: intarray.C
//
// Implementation of the IntArray class.

#include <iostream.h>
#include <iomanip.h>
#include <stdlib.h>
#include <sys/types.h>
#include <time.h>
#include "intarray.h"

// Constructor
//
IntArray::IntArray(int n /* = 1 */) {

   size = n ;
   A = new int[n] ;
   if (A == NULL) {
       cerr << "Out of memory in IntArray constructor" << endl ;
   }

   srand48(time(NULL)) ;
   for (int i = 0 ; i < n ; i++) {
      A[i] = lrand48() ;
   }
}


// Destructor
//
IntArray::~IntArray() {
   delete [] A ;
}


// Print the array
//
void IntArray::print() {

   cout << "integer array [" << size << "]\n" ;
   for (int i = 0 ; i < size ; i++) {
     cout << "A[" << i << "] = " << A[i] << endl ;
   }
   cout << "\n" ;
}


void IntArray::swap(int i, int j) {
   int temp ;

   if (i < 0 || i >= size || j < 0  || j >= size)
      cout << "array index out of bounds " << i << " or " << j <<"\n" ;
   temp = A[i] ;
   A[i] = A[j];
   A[j] = temp ;
}


int IntArray::cmp(int i, int j) {

   if (i < 0 || i >= size || j < 0  || j >= size)
      cout << "array index out of bounds " << i << " or " << j <<"\n" ;
   if (A[i] < A[j]) return -1 ;
   if (A[i] == A[j]) return 0 ;
   return 1 ;
}