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DSA · Theory

Tournament Tree (Winner Tree)

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Theory

224/810

Tournament Tree (Winner Tree)

Tournament Tree (Winner Tree) 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 Tournament Tree (Winner Tree).

From the example next to this theory — Tournament Tree (Winner Tree): dry-run [4, 1, 3].

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

Viva — what is Tournament Tree (Winner Tree)? Then show left < root < right. Then name the trap.

Exam tip

What is Tournament Tree (Winner Tree)? Show this: left < root < right. Trap: unbalanced BST becoming a list.

Example

# Tournament Tree (Winner Tree)
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)

Tournament Tree (Winner Tree): dry-run [4, 1, 3]. Say the list after one step.

Short notes

  • DefTournament Tree (Winner Tree) — folder on disk in a file explorer.
  • Ruleleft < root < right
  • Trapunbalanced BST becoming a list
  • Usea file explorer

Questions

1

What is Tournament Tree (Winner Tree)?

2

Give one small example of Tournament Tree (Winner Tree).

3

What mistake do beginners make with Tournament Tree (Winner Tree)?

4

Where do you use Tournament Tree (Winner Tree)?

224 / 810

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