MediumJavaScriptPractice mode: untimed, 3 hints

Top scorer from a CSV

topScorer(rows) returns the name with the highest score, the first one on a tie, or null when there are no rows. The rows come from a CSV export, so every field is a string: { name: "Asha", score: "87" }.

The code has exactly one planted bug. Reproduce it with the tests, fix it with the smallest change, then submit.

Visible tests

nine against ten
- topScorer([{"name":"Asha","score":"9"},{"name":"Ravi","score":"10"}]) → "Ravi"
plain case
- topScorer([{"name":"Meera","score":"40"},{"name":"Kabir","score":"75"}]) → "Kabir"

Hints 0/3

// Rows come from a CSV export, so every field is a string: { name: "Asha", score: "87" }.
// Returns the name with the highest score (the first one on a tie), or null for no rows.
function topScorer(rows) {
  let best = null;
  for (const row of rows) {
    if (best === null || row.score > best.score) best = row;
  }
  return best === null ? null : best.name;
}

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