1
/**
2
 * @param {string[]} messages
3
 * @param {string[]} senders
4
 * @return {string}
5
 */
6
var largestWordCount = function (messages, senders) {
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  let wordCount = {};
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  let result = "";
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  let maxCount = -Infinity;
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  for (let i = 0; i < messages.length; i++) {
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    let count = messages[i].split(" ").length;
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    wordCount[senders[i]] =
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      wordCount[senders[i]] == undefined
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        ? count
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        : wordCount[senders[i]] + count;
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    if (
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      wordCount[senders[i]] > maxCount ||
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      (wordCount[senders[i]] == maxCount && senders[i] > result)
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    ) {
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      maxCount = wordCount[senders[i]];
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      result = senders[i];
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    }
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  }
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  return result;
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};