Complete Tree Checker (Go)

This is a simple Go program that checks if a given tree is complete or not. A tree is complete if all levels are completely filled except possibly the last level and the last level has all keys as left as possible.

Examples

In the following example, the tree is complete:

// Create a complete tree
tree := Tree{}
tree.root = newNode(1)
tree.root.left = newNode(2)
tree.root.right = newNode(3)
tree.root.left.left = newNode(4)
tree.root.left.right = newNode(5)
tree.root.right.left = newNode(6)
tree.root.right.right = newNode(7)
tree.root.left.left.left = newNode(8)
tree.root.left.left.right = newNode(9)
tree.root.left.right.left = newNode(10)
tree.root.left.right.right = newNode(11)
tree.root.right.left.left = newNode(12)
tree.root.right.left.right = newNode(13)
tree.root.right.right.left = newNode(14)
tree.root.right.right.right = newNode(15)

if tree.isComplete() {
    fmt.Println("The tree is complete")
} else {
    fmt.Println("The tree is not complete")
}

And another non-complete tree example:

// Create a non-complete tree
tree = Tree{}
tree.root = newNode(1)
tree.root.left = newNode(2)
tree.root.right = newNode(3)
tree.root.left.left = newNode(4)
tree.root.left.right = newNode(5)
tree.root.right.left = newNode(6)
tree.root.right.right = newNode(7)
tree.root.left.left.right = newNode(9)

if tree.isComplete() {
    fmt.Println("The tree is complete")
} else {
    fmt.Println("The tree is not complete")
}

Copyright (c) 2022, Max Base