A complete binary tree is a binary tree in which every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. I think you are confused between complete binary tree and almost complete binary tree
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A complete binary tree is a binary tree in which every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible.
I think you are confused between complete binary tree and almost complete binary tree
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