How can I do this problem of arrays?

Greetings! I need to do this problem, but the problem is that I dont have idea how to do it without commands mentioned below.

Write a function that receives an array of any size and maximum and minimum return of all numbers in the matrix. Schedule your function using loops, DO NOT use the predefined functions allowed Matlab: min, max, sort, sortRows.

Please help me! I am a premier! This is not my concentration and It's very difficult for me. Thanks a lot!

Answer 1

[Walter Roberson]

You can get the outline of the code from http://www.mathworks.com/matlabcentral/answers/307479-how-to-use-if-statement-to-pick-up-3-to-4-values-from-the-data-that-nearest-to-the-mean#answer_239173 which is code that finds the 4 smallest values of something.