Sorting algorithm substituting the prebuilt 'sort' function in MATLAB

I am given a .mat file with 90+ countries (AUS,CAD,USA etc) and we are supposed to sort it alphabetically before we could use it for further processing. The problem is, I am not allowed to use a prebuilt sorting function. How should the sorting algorithm look like?

Thanks

[per isakson]

Start simple, see Bubble sort

Answer 1

[Prasad Mendu]

As Per Iskakson mentioned in the comments, you can start off with Bubble sort and then explore other sorting algorithms that have less time complexity.

Some useful links to look at:

https://en.wikipedia.org/wiki/Sorting_algorithm

https://en.wikipedia.org/wiki/Time_complexity