Complexity Quest: Big-O Essentials

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Test your Big-O knowledge

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Dr. V. Sridevi

India

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Froggy Jumps Complexity Quest: Big-O EssentialsOnline version Test your Big-O knowledge by Dr. V. Sridevi 1 What does Big-O notation describe in algorithms? a The exact number of operations for small inputs b How running time or space grows with input size c The hardware requirements of a program 2 Which Big-O represents constant time? a O(n) b O(log n) c O(1) 3 Which is typically the worst-case complexity for linear search? a O(1) b O(n) c O(log n) 4 Which sorting algorithm has O(n log n) on average? a Selection sort b Merge sort c Bubble sort 5 What does space complexity measure? a Memory usage of an algorithm b Speed of code execution c Number of lines of code 6 Best-case complexity often occurs when? a When the data is unsorted b When the list is empty c When the first element is the target 7 Which statement is true about average case? a Always worse than worst case b Always equal to best case c Often approximates expected performance on random inputs 8 Binary search requires data to be which of the following? a Sorted b Randomized c Unsorted 9 Which operation is O(1) in a queue context? a Enqueue or Dequeue when implemented in constant time b Searching the entire queue c Comparing every element 10 Which is usually faster for large data: bubble sort or merge sort? a Merge sort b Bubble sort c Insertion sort

Froggy Jumps

Complexity Quest: Big-O EssentialsOnline version

Test your Big-O knowledge

by Dr. V. Sridevi

What does Big-O notation describe in algorithms?

The exact number of operations for small inputs

How running time or space grows with input size

The hardware requirements of a program

Which Big-O represents constant time?

O(n)

O(log n)

O(1)

Which is typically the worst-case complexity for linear search?

O(1)

O(n)

O(log n)

Which sorting algorithm has O(n log n) on average?

Selection sort

Merge sort

Bubble sort

What does space complexity measure?

Memory usage of an algorithm

Speed of code execution

Number of lines of code

Best-case complexity often occurs when?

When the data is unsorted

When the list is empty

When the first element is the target

Which statement is true about average case?

Always worse than worst case

Always equal to best case

Often approximates expected performance on random inputs

Binary search requires data to be which of the following?

Sorted

Randomized

Unsorted

Which operation is O(1) in a queue context?

Enqueue or Dequeue when implemented in constant time

Searching the entire queue

Comparing every element

Which is usually faster for large data: bubble sort or merge sort?

Merge sort

Bubble sort

Insertion sort

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Complexity Quest: Big-O Essentials

Froggy Jumps

About this activity

Created by

Download the paper version to play

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Complexity Quest: Big-O EssentialsOnline version

by Dr. V. Sridevi

What does Big-O notation describe in algorithms?

Which Big-O represents constant time?

Which is typically the worst-case complexity for linear search?

Which sorting algorithm has O(n log n) on average?

What does space complexity measure?

Best-case complexity often occurs when?

Which statement is true about average case?

Binary search requires data to be which of the following?

Which operation is O(1) in a queue context?

Which is usually faster for large data: bubble sort or merge sort?

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