Source: https://www.careercup.com/question?id=5102434353414144\n\nIn a tennis tournament of N players every player plays with every other player.\nFind winner of tournament .\n\n**Similar Question**\nIn a tennis tournament of N players every player plays with every other player. \nThe following condition always hold- \nIf player P1 has won the match with P2 and player P2 has won from P3, then Player P1 has also defeated P3. \nFind winner of tournament in O(N) time and O(1) space. Find rank of players in O(NlogN) time.

Source: https://www.careercup.com/question?id=5102434353414144\n\nIn a tennis tournament of N players every player plays with every other player.\nFind winner o