myvec = [5,7,7,11,3,5,9,1,5,7] show all matlab codes used and a pic of matlab command window

Given a vector vec of distinct elements in increasing order, write a function indx = myBinarySearch (vec, key) which implements a binary search and outputs o if key vec (length (vec)). Your function should not use any built-in Matlab functions except possibly length and floor. Use your function with the inputs vec = 1:20 and key 0, 5, 10, 15, 25, as well as vec = unique (myvec) and k = 0, 5, 25