Ex02. 頻率計數

請計算下列C語言程式片斷或函數的頻率計數:

(1)  for ( i = 0; i < n; i++ )
       for ( j = 0; j < n; j++ )
          for ( k = 0; k < n; k++)
             a = a + 1;

頻率計數   :

=n+1

=n*(n+1) = n²+n

=n*n*(n+1)= n³+n²

=n³

=2n³+2n²+2n+1

(2)   i = 1;
      while ( i <= n ) {
         a = a + 1;
         i++;
      }

頻率計數   :

=1

=n+1

=n

=n

=3n+2