Leetcode Problem 2225. Find Players With Zero or One Losses

2225. Find Players With Zero or One Losses

Leetcode Solutions

Hash Map Approach

  1. Initialize a hash map losses_count to store the number of losses for each player.
  2. Iterate over each match [winner, loser] in matches. a. Increment the loss count for loser in losses_count. b. If winner is not in losses_count, add winner with a loss count of 0.
  3. Initialize two lists no_loss and one_loss to store players with zero and one loss respectively.
  4. Iterate over the entries in losses_count. a. If a player has zero losses, add them to no_loss. b. If a player has exactly one loss, add them to one_loss.
  5. Return the two lists no_loss and one_loss after sorting them in increasing order.
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Counting with Array Approach

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