Find the Longest Word in a Sentence

JavaScript

Technical Specification

Given a sentence, return the longest word. If there are multiple, return any one.

Input/Output Samples

Input:"I love JavaScript"

Output:"JavaScript"

Optimal Logic Path

function longestWord(str) {
  const words = str.split(/s+/);
  let longest = "";
  for (const w of words) {
    if (w.length > longest.length) longest = w;
  }
  return longest;
}

Architectural Deep-Dive

We keep track of the longest word seen so far while iterating.