question on array and number

Question

i have one problem for example we have array

int a[]=new int[]{a1,a2,a3,a4,..........an}:

task is fill the same array by elements which are not in the array for example a={1,3,4,5,6,7} should be filled by any numbers {2,8,9,12,13,90}or others but not by elements which are in array this must not be{1,12,13,14,110} because 1 is in the array a thanks

Answer 1

Just get the highest and lowest number in the array, create a new array with elements from your lower bound value to n.

Obtaining the highest and lowest number can be done in the same loop.

Assuming 12,4,3,5,7,8,89, it'll detect 3 as the lowest, 89 as the highest value. It then creates a new array and fills it with 3..89; then discard the old array.