IBM Software Developer Engineer interview questions

Technical round consisted of an online exam which asked varied questions

The first problem was easy it took me around 7 minutes to complete. The second problem was tough for me. It asked to find the minumum number of elements to remove from an array to make it balanced. By balanced they meant, the largest element in the array has to be at most twice larger than the smallest element. For that 11 tests out of 15 have passed. But I could not make all of them pass.