Algorithms treasure hunt
Algorithms are all around us - from your smartphone to navigation systems. Our GPS scavenger hunts introduce you to the fascinating world of computer logic in an interactive and understandable way.
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Made 2 days ago: Enkhuizen city walk in Enkhuizen
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New example questions from the library every Monday. Updated on 12 October 2026.
A lion is tired. What does he do?
He lies down in the shade
He will run
He goes swimming
He will climb
A duck wants to swim. What does she do first?
Walking to the water
Swimming
Getting out of water
Shaking feathers dry
A crab walks on the beach. How does it move?
Sideways
Reverse
He flies
He rolls
A sheep eats grass. What does it do first?
Putting your head down
Chewing grass
Swallowing grass
Feeling full
You go outside. What do you do after putting on shoes?
Opening door
Putting on socks
Taking off shoes
Going inside
A monkey grabs banana. Which step comes after 'climbing tree'?
Banana picking
Tree search
Getting hungry
Climbing out of tree
You clean up toys. Which step comes after 'collecting toys'?
Put in coffin
Play
Box put away
Getting new stuff
You go cycling. What do you check first?
Whether the tyres are full
Whether you are hungry
Whether it is dark
Whether you are tired
When building with blocks, you start with:
The bottom blocks
The upper blocks
The blocks in the middle
All blocks at once
How do you count backwards from 10 to 1?
10, 9, 8, 7, 6, 5, 4, 3, 2, 1
1, 2, 3, 4, 5, 6, 7, 8, 9, 10
10, 8, 6, 4, 2
1, 3, 5, 7, 9
When clearing books, put them:
Neatly upright in the cupboard
Under your pillow
In the fridge
In the garden
What do you do when you want to invite boyfriends to your birthday?
They ask if they are coming
Hope they come naturally
Not inviting anyone
Invite only yourself
How do you sort cubes by colour?
All red together, all blue together
All cubes mixed together
Large cubes by small cubes
Picking only the pretty cubes
When cleaning up toys, sort by:
Type of toy
Box colour
Size of the room
Day of the week
How do you sort from big to small?
Biggest first, then smaller and smaller
Smallest first, then bigger and bigger
Interspersed
Picking only the middle one
What do you do when you are thirsty?
Drinking water
Going to sleep
Eating candy
Going outside to play
Which step belongs to the algorithm for learning to swim?
Practice in shallow water first
Jumping straight into the deep end
Starting without swimming trunks
Swimming with your clothes on
What do you do first when learning a new dance?
Watching how to do it
Immediately dancing very fast
Closing your eyes
Sit down
Which step belongs to the algorithm for learning a song?
Repeating the song often
Hearing the song once
Forgetting the song
Flipping the song
Which step comes first when brushing your teeth?
Putting toothpaste on the brush
Rinsing your mouth
Putting the brush away
Brushing your teeth
What is the first thing you do when looking up a word in the dictionary?
Looking at the first letter
Closing the book
Save any page
Holding the book upside down
What do you do first when looking for a toy?
Thinking about what you are looking for
Emptying all crates
Calling Mama
Going to play
Which step comes last when getting ready for school?
Packing your bag
Get up
Breakfast
Brushing your teeth
What can you do with an algorithm?
Learning something on a computer
Breaking a computer
Hiding a computer
Selling a computer
What is a Monte Carlo algorithm?
An algorithm using random sampling
An algorithm named after a casino
A sorting algorithm
A search algorithm
What property does insertion sort have?
It gradually builds up a sorted list
It does not use equations
It only works with text data
It can only sort small lists
Which term describes how efficient an algorithm is?
Time complexity
Programming complexity
User complexity
Hardware complexity
What algorithm is used for spell checkers?
Levenshtein distance algorithm
Binary search
Quick sort
Hash function
What is a sliding window algorithm?
An algorithm that slides a 'window' over data
An algorithm for window animations
An algorithm that installs windows
A time measurement algorithm
What is the difference between linear search and binary search?
Binary search only works on sorted lists and is faster
Linear search uses more memory
Binary search only works with numbers
There is no difference, both are equally fast
What is backtracking in algorithms?
A method that steps back if no solution is found
One way to recover files
A debugging technique
A type of loop
What is a binary tree?
A data structure where each node has at most two children
An algorithm working only with 1 and 0
A programme with two functions
A computer with two processors
What technique does Counting Sort use?
Counting frequencies of elements
Comparing elements
Dividing and ruling
Using heaps
What is the result of a topological sort?
A linear arrangement of vertices in a directed count
The shortest cycle in a count
The number of edges in a count
The diameter of a count
What is the difference between an algorithm and a heuristic?
An algorithm guarantees a correct solution, a heuristic does not
A heuristic is always faster
An algorithm uses more memory
There is no difference
What algorithm is used for string matching?
KMP (Knuth-Morris-Pratt)
Dijkstra
Binary Search
Bubble Sort
What is a bipartite count?
A count whose vertices can be divided into two sets
A count with exactly two vertices
A count with two different colours
A two-component count
What algorithm is used for scheduling tasks?
Round Robin
Binary Search
Merge Sort
DFS
What is the time complexity of the Bubble Sort algorithm in the worst case?
O(n²)
O(n log n)
O(n)
O(log n)
What is a cache-oblivious algorithm?
An algorithm that works efficiently without knowing cache parameters
An algorithm that uses no memory
An algorithm that always has O(1) time
A CPU-only algorithm
What data structure is typically used in Breadth-First Search?
Queue
Stack
Heap
Hash table
What is the best time complexity possible for a similarity-based sorting algorithm?
O(n log n)
O(n)
O(log n)
O(n²)
What is the main advantage of Hash Tables for search operations?
Average O(1) search time
Guaranteed O(log n) search time
Minimum memory usage
Automatic sorting of data
What property does a Red-Black Tree have?
Each node is red or black with specific colour rules
All nodes have exactly two children
It is always a complete binary tree
All leaf nodes are at the same level
What algorithm is used to solve the 'Travelling Salesman Problem' for small datasets?
Dynamic Programming with bitmasks
Greedy algorithm
Breadth-First Search
Linear search
What is the main characteristic of an AVL tree?
Self-balancing binary search tree
Always a complete tree
Maximum 3 children per node
Uses hashing for quick access
Which method is used in Linear Probing for solving hash collisions?
Search for the next available position
Use of linked lists
Double hashing
Random placement
What is the time complexity of the Euclidean algorithm for finding GCD?
O(log min(a,b))
O(a + b)
O(a × b)
O(1)
What is the time complexity of the Strassen algorithm for matrix multiplication?
O(n^2,807)
O(n³)
O(n²)
O(n^2.5)
What algorithm is used to implement priority queues with efficient decrease-key operations?
Fibonacci Heap
Binary Heap
Hash Table
Linked List
What is the main principle of the Skip List algorithm?
Probabilistic layered linked lists for fast search operations
Deterministic binary tree structure
Hash-based indexing
Array-based sequential access
What algorithm is used for the Closest Pair of Points problem?
Divide and Conquer with merge
Greedy algorithm
Dynamic Programming
Brute force only
What is the time complexity of the Euclidean algorithm for finding the GCD?
O(log(min(a,b)))
O(max(a,b))
O(a + b)
O(a × b)
What is the time complexity of the Z Algorithm for string matching?
O(n)
O(n²)
O(n log n)
O(n³)
What algorithm is used to compress audio in MP3 files?
Modified Discrete Cosine Transform (MDCT)
Huffman coding
LZ77 compression
Run-length encoding
What algorithm is used by Bitcoin for the proof of work mining process?
SHA-256
MD5
AES-128
RSA-2048
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A Algorithms scavenger hunt is a GPS-guided outdoor activity with quiz questions about Algorithms, part of the theme Computers. You walk a route past various locations and answer fun questions along the way.
There are 2252 questions available about Algorithms: 2252 multiple choice questions, 0 open questions and 0 assignments. The category Computers has more than 46143 questions in total.
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