Length of a Last Word, Leetcode Challenge, Simple Solution
Master “Length of Last Word” in JavaScript in just 4 mins. We restate the task in plain English, set up sample strings, code a beginner split-trim solution, then build an optimized reverse scan that skips trailing spaces. Includes line-by-line narration, console checks, Big-O, and common pitfalls—perfect for software engineer and SDET/QA interview prep.
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Timestamps:
0:00 — What is the “Length of Last Word” problem?
0:15 — Which edge cases matter (trailing spaces, single word)?
0:32 — What example strings will we test?
0:45 — How does the beginner split-trim approach work, and can we code it?
1:50 — How does the optimized reverse scan work, and can we code it?
3:05 — Do our console checks match expected outputs, and what are the Big-O and pitfalls?
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