40 Algorithm Challenge Booklet Answers Jun 2026

Using a wildcard pattern (e.g., *ot ) is faster for large dictionaries, but the above is easiest for the booklet.

While we encourage you to tackle the logic yourself to build those "coding muscles," we know sometimes you just need to see a working example to understand why it works.

return true;

But let’s be honest: working through 40 algorithmic problems is grueling. You hit a wall. You stare at a recursion stack overflow. You ask yourself, “Why is my binary search returning -1?”

Logic: Use ELIF to check multiple age ranges (e.g., 13–15 for 30% off, 50+ for 40% off). 40 Algorithm Challenge Booklet Answers

Print numbers 1 to 100. Multiples of 3 → "Fizz", 5 → "Buzz", both → "FizzBuzz". Answer (JavaScript):

Below are typical challenges found in the booklet and the logic required to solve them. Using a wildcard pattern (e

map.put(nums[i], i);

Use a hash map for O(n) time instead of O(n²) brute force. You hit a wall

, which requires outputting all odd numbers between 1 and 20. File Handling : Introduced in Challenge 20

Reading a file of customer orders and awarding cards to those with >20 orders.