申論題內容
4. Suppose we have an array A containing 9 integers: 240, 119, 682, 341, 225, 556, 122, 661, 245,
i.e. A = [240, 119, 682, 341, 225, 556, 122, 661, 245] with the first index being 0. Please convert
the array A into a maxheap and show the content of A after conversion. Note that
the conversion should be done in-place.