If you reverse engineer the formula for the right children, it should be (node - 2) // 2 given the formula in the previous screen. Just wanted to check if this was intentional and I may have misunderstood the concept?

Hey @siddhip987

This may be intentional as the content tries to provide the same solution for both left and right child nodes in one go.

Notice for `(i - 1) / 2`

always works for the left index as it is always an odd number. This doesn’t work for the right index as it’s always an even number (the index I mean!).

If we apply `(i - 2) / 2`

as a general solution then the right indexed nodes will work correctly but the left ones will give 0.5 errors similar to case 1.

If we apply `(i - 2) // 2`

as a general solution then again the left indexed nodes would result in 1 less index for parents. For example for left index 7, the parent node will be `( 7 - 2) // 2 = 2`

which is incorrect.

If you are implementing separate solutions then `i - 1 and i - 2`

might work. I guess the intention of the content was to provide the same solution that can be applied to either index.

please do share your thoughts.