Join Raghavendra Dixit for an in-depth discussion in this video Stable vs. unstable sorts, part of Introduction to Data Structures & Algorithms in Java.
- [Instructor] Apart from the time complexity of an…algorithm and checking if the sorting is in place or not,…we also consider whether an algorithm is stable or not.…So what does that mean?…Well it's a small thing.…Consider an unsorted array with two elements…having the same value five.…So I have marked them as five and five prime…just to be able to distinguish the two numbers,…although the numbers are the same of course.…
Now after the sorting is done on the array,…if the result of sort is this,…we call it a stable sort.…While if the elements are arranged like this,…we call this an unstable sort.…And what is the difference?…Well the difference is that in case of a stable sort,…the order of the elements in which they occurred…in a list or edit is maintained even after the sort.…Like in this case, five came before five prime…in the original edit so that order is still maintained here.…
Five still comes before five prime.…Whereas if you look at the unstable sort,…the order of equal elements has been changed.…So that five prime comes before five.…
Note: This course was created by Packt Publishing. We are pleased to host this training in our library.
- Why study data structures and algorithms?
- How to calculate the time complexity
- Using Big O notation
- Using basic sorting and search algorithms
- Searching elements in unordered arrays and ordered arrays
- Implementing a linked list in Java
- Implementing stacks using arrays
- Queues using arrays
- Binary search trees
- Representing heaps using arrays
Skill Level Intermediate
1. Introduction to Algorithms
2. Analysis of Algorithms
3. Basic Sorting and Search Algorithms
4. Linked Lists
5. Stacks and Queues
7. Binary Search Trees
8. More Sorting Algorithms
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