How to Solve Find Champion I Problem
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Find Champion I
There are n teams numbered from 0 to n - 1 in a tournament. Given a 0-indexed 2D boolean matrix grid of size n * n. For all i, j that 0 <= i, j <= n - 1 and i != j team i is stronger than team j if gr...
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Understanding the Find Champion I Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
There are n teams numbered from 0 to n - 1 in a tournament. Given a 0-indexed 2D boolean matrix grid of size n * n. For all i, j that 0 <= i, j <= n - 1 and i != j team i is stronger than team j if grid[i][j] == 1, otherwise, team j is stronger than team i. Team a will be the champion of the tournament if there is no team b that is stronger than team a. Return the team that will be the champion of the tournament.
Find Champion I
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Examples
grid = [[0,1],[0,0]]0There are two teams in this tournament. grid[0][1] == 1 means that team 0 is stronger than team 1. So team 0 will be the champion.
grid = [[0,0,1],[1,0,1],[0,0,0]]1There are three teams in this tournament. grid[1][0] == 1 means that team 1 is stronger than team 0. grid[1][2] == 1 means that team 1 is stronger than team 2. So team 1 will be the champion.
Constraints
n == grid.lengthn == grid[i].length2 <= n <= 100grid[i][j] is either 0 or 1.For all i grid[i][i] is 0.For all i, j that i != j, grid[i][j] != grid[j][i].The input is generated such that if team a is stronger than team b and team b is stronger than team c, then team a is stronger than team c.How Interview Coder Helps with Leetcode Problems
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