How to Solve Count of Matches in Tournament Leetcode Problem - Interview Coder Guide
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How to Solve Count of Matches in Tournament Problem

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Easy#1806
LeetCode Problem

Count of Matches in Tournament

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 pl...

MathSimulation

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Problem Breakdown

Understanding the Count of Matches in Tournament Problem

Let's break down this LeetCode problem and understand what makes it challenging in interview settings.

Problem Statement

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.

EasyProblem #1806
LeetCode

Count of Matches in Tournament

Related Topics
MathSimulation
How Interview Coder Helps

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Examples

Example 1
INPUT
n = 7
OUTPUT
6
EXPLANATION

Details of the tournament: - 1st Round: Teams = 7, Matches = 3, and 4 teams advance. - 2nd Round: Teams = 4, Matches = 2, and 2 teams advance. - 3rd Round: Teams = 2, Matches = 1, and 1 team is declared the winner. Total number of matches = 3 + 2 + 1 = 6.

Example 2
INPUT
n = 14
OUTPUT
13
EXPLANATION

Details of the tournament: - 1st Round: Teams = 14, Matches = 7, and 7 teams advance. - 2nd Round: Teams = 7, Matches = 3, and 4 teams advance. - 3rd Round: Teams = 4, Matches = 2, and 2 teams advance. - 4th Round: Teams = 2, Matches = 1, and 1 team is declared the winner. Total number of matches = 7 + 3 + 2 + 1 = 13.

Constraints

1 <= n <= 200

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