I was learning about Merkle trees and understood that if A, B, C and D are the leaf nodes, then their parents will be
H(H(C)+H(D)) rsp. and the root will be
H( H(H(A)+H(B)) + H(H(C)+H(D)) ). What if instead of this, the parents of the leaf node were:
H(A+B) and H(C+D) and the root be
I intuitively know this may not be a good choice but can someone explain it in a better way?