Problem 61092. Leaderboard Tracker

  • S is an m×n matrix of scores, where S(i,j) is the score of player j in match i.
  • cumScore is an m×1 vector containing the cumulative score of the current leader after each match.
  • leaderIdx is an m×1 vector of indices of the current leader.
Example:
S = [2 3 1; 1 2 3; 0 1 2];
[cumScore, leaderIdx] = leaderboard_tracker(S)
% cumScore = [3;5;6]
% leaderIdx = [2;2;2]
Hints:
  • Use cumsum to track cumulative scores.
  • Update the leader only if a player’s cumulative score exceeds the current leader.
  • In case of ties for a new leader, pick the lowest index.
Solve

Solution Stats

87.5% Correct | 12.5% Incorrect
Last Solution submitted on Dec 06, 2025

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