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DSA · Theory

General Tree (Each node can have arbitrary number of children) Level Order Traversal

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Theory

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General Tree (Each node can have arbitrary number of children) Level Order Traversal

General Tree (Each node can have arbitrary number of children) Level Order Traversal is a DSA topic. In plain words you use it for folder on disk in a file explorer. Don’t start with a slogan — start with that picture.

Smallest example: left < root < right. Type it, run it, and say what you see. If you can do that from memory, you know General Tree (Each node can have arbitrary number of children) Level Order Traversal.

From the example next to this theory: General Tree (Each node can have arbitrary number of children) Level Order Traversal: dry-run [4, 1, 3].

Trap — unbalanced BST becoming a list. Fix that before you talk about advanced DSA.

Viva: what is General Tree (Each node can have arbitrary number of children) Level Order Traversal? Then show left < root < right. Then name the trap.

Exam tip

What is General Tree (Each node can have arbitrary number of children) Level Order Traversal? Show this: left < root < right. Trap: unbalanced BST becoming a list.

Example

# General Tree (Each node can have arbitrary number of children) Level Order Traversal
data = [4, 1, 3]
print("start", data)
if data[0] > data[1]:
    data[0], data[1] = data[1], data[0]
print("after one step", data)

General Tree (Each node can have arbitrary number of children) Level Order Traversal: dry-run [4, 1, 3]. Say the list after one step.

Short notes

  • DefGeneral Tree (Each node can have arbitrary number of children) Level Order Traversal — folder on disk in a file explorer.
  • Ruleleft < root < right
  • Trapunbalanced BST becoming a list
  • Usea file explorer

Questions

1

What is General Tree (Each node can have arbitrary number of children) Level Order Traversal?

2

Give one small example of General Tree (Each node can have arbitrary number of children) Level Order Traversal.

3

What mistake do beginners make with General Tree (Each node can have arbitrary number of children) Level Order Traversal?

4

Where do you use General Tree (Each node can have arbitrary number of children) Level Order Traversal?

557 / 810

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