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Questions and Answers
What best describes the time complexity of accessing an element by index in a list?
What best describes the time complexity of accessing an element by index in a list?
- O(1) (correct)
- O(n)
- O(log n)
- O(n^2)
Which sorting algorithm is characterized by its O(n^2) time complexity?
Which sorting algorithm is characterized by its O(n^2) time complexity?
- Selection Sort (correct)
- Insertion Sort
- Quick Sort
- Merge Sort
Which description is accurate regarding the Selection Sort algorithm?
Which description is accurate regarding the Selection Sort algorithm?
- It repeatedly finds the minimum element from the unsorted part. (correct)
- It uses recursion to sort elements.
- It divides the array into equal halves in each iteration.
- It sorts the elements in logarithmic time.
Flashcards
Time complexity
Time complexity
A way of measuring how the runtime of an algorithm scales with the size of the input, expressed using "Big O notation".
Big O notation
Big O notation
A notation that describes the asymptotic behavior of a function. It's used to classify algorithms based on their efficiency.
O(1)
O(1)
Indicates that the runtime of an algorithm stays constant regardless of the input size. For example, accessing an element in a list by its index.
O(n)
O(n)
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O(n^2)
O(n^2)
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