11 Questions
What is the time complexity of Selection Sort algorithm?
O(N^2)
What is the default stability of Selection Sort algorithm?
Unstable
What is the advantage of Selection Sort algorithm?
Easy to implement
What is the time complexity of Selection Sort?
O(N^2)
Is Selection Sort a stable algorithm?
No
What is the main advantage of Selection Sort?
It is easy to implement
What is the time complexity of selection sort in the best case?
O(n^2)
What is the main advantage of selection sort over other sorting algorithms?
It is the easiest sorting algorithm to understand.
What is a specific scenario where selection sort is a good choice?
Sorting data with few unique keys
What is the main disadvantage of selection sort?
It is not parallelizable.
What is the difference between a stable sorting algorithm and an unstable sorting algorithm?
Stable sorting algorithms preserve the relative order of items with equal keys, while unstable sorting algorithms do not.
Study Notes
Selection Sort Algorithm
- The time complexity of Selection Sort algorithm is O(n^2) in all cases (best, average, and worst).
- Selection Sort algorithm is not stable by default.
- The main advantage of Selection Sort algorithm is its simplicity and ease of implementation, with minimal auxiliary memory required.
Stability of Sorting Algorithms
- A stable sorting algorithm maintains the relative order of equal sort elements, whereas an unstable sorting algorithm does not.
- In a stable sorting algorithm, when multiple records have the same key, their original order is preserved.
- In an unstable sorting algorithm, the original order of equal keys is not preserved.
Selection Sort in Specific Scenarios
- Selection sort is a good choice when the array is small, as it has low overhead in terms of auxiliary memory and is simple to implement.
- However, the main disadvantage of selection sort is its inefficiency on large datasets due to its high time complexity.
Note: The notes focus on key facts and concepts related to Selection Sort, stability of sorting algorithms, and specific scenarios where it can be used effectively.
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