Microsoft Software Developer Mock Interview
Practice 30 Microsoft Software Developer interview questions covering algorithms, system design, and coding assessments.
Question 8 of 30
Describe how do you implement an insertion sort algorithm, and what's the easiest way to do it?
How to Answer
Example Answer
Community Answers
William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
If the Microsoft interviewer asks ten software developers to describe how to implement a sort algorithm, they will probably get ten slightly different but related answers. Every software developer has a method and a work style that works for them and makes them efficient at their job. An interviewer, in this case, wants to hear about the method you use and if you take any shortcuts to arrive at the final product. They want to know if you take shortcuts that could compromise the quality of work you are doing. They would like to hear about your development methodology and how you implement an insertion sort algorithm while doing your due diligence and quality checks along the way. In simple terms, the way an insertion sort works is it starts from the index 1 (not 0), and each index starting from index one is like a new card that you have to place at the right position in a sorted sub-array on the left side.
William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
"I can give several examples of Insertion Sorts, but I think to give you a better explanation, it would make more sense to list in detail the characteristics of an Insertion Sort. Let's start with the first one.
1. There are two types - Selection Sort and Bubble Sort algorithms.
2. They are efficient for smaller data sets but very inefficient for larger data lists.
3. The stable sorting technique does not change the relative order of equal elements.
4. It doesn't take up much space. Unlike bubble sort, an insertion sort also requires additional memory space.
5. An Insertion Sort is adaptive, which means it reduces the total number of steps required for a partially sorted array to provide input."
Interview Coach
Jaymie
A real coach, not AI. I read every answer myself and write back with personalized feedback.
Typically responds within 24 hours.
0 - Character Count
Unlock All 30 Microsoft Questions
Unlock expert responses shaped by Microsoft's rigorous technical interview process.
Get StartedJump to Question