[Leet Code] Count of Matches in Tournament

Leetcode: https://leetcode.com/problems/count-of-matches-in-tournament/

Problem:

You are given an integer n, the number of teams in a tournament that has strange rules:

  • If the current number of teams is even, each team gets paired with another team. A total of n / 2 matches are played, and n / 2 teams advance to the next round.
  • If the current number of teams is odd, one team randomly advances in the tournament, and the rest gets paired. A total of (n - 1) / 2 matches are played, and (n - 1) / 2 + 1 teams advance to the next round.

Return the number of matches played in the tournament until a winner is decided.

Example 1:

Example 2:

Constraints:

  • 1 <= n <= 200

Solution A:

Solution B:

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