AI moves fast.
So do vibe coders.

How many times does the letter R appear in the word 'strawberry'? Answer with just the number.

A farmer has 17 sheep. All but 9 die. How many sheep are left? Explain your reasoning in one sentence.

Which is larger: 9.11 or 9.9? Answer with just the larger number.

This function is supposed to return the last 3 items of a list, but it has a bug.
Find the bug and explain the fix in 2 sentences, then show the corrected code.

def last_three(items):
    return items[-4:-1]

This query is supposed to return each customer's total spend, but it's returning wrong
totals for customers with multiple orders. What's wrong and what's the fix?

SELECT customers.name, orders.amount
FROM customers
JOIN orders ON customers.id = orders.customer_id;

This Express route renders a user-supplied name into HTML. Name the vulnerability in one
word and the safest fix in one sentence, then show a corrected one-liner.

app.get('/hello', (req, res) => {
  res.send('<h1>Hello ' + req.query.name + '</h1>');
});

Write a JavaScript function slugify(str) that:
- lowercases
- replaces any run of spaces or punctuation (anything not a-z, 0-9) with a single hyphen
- strips leading/trailing hyphens
Return ONLY a markdown javascript code fence with the function. No tests, no explanation.

Write a JavaScript function isPalindrome(str) that returns true if str is a palindrome
ignoring case, spaces, and punctuation (keep only a-z0-9). Empty string is true.
Return ONLY a markdown javascript code fence with the function. No tests, no explanation.

Write a JavaScript function chunk(arr, size) that splits arr into arrays of length size.
The last chunk may be shorter. If size < 1, return []. Do not mutate arr.
Return ONLY a markdown javascript code fence with the function. No tests, no explanation.