find the first elements of a column matrix
This would be better as "find the nth element of an array." Also, a column matrix doesn't exist. Perhaps you meant column vector, though the variables in your test cases are row vectors.
Which values occur exactly three times?
Reverse the vector
Back to basics 25 - Valid variable names
Number of digits in an integer
UICBioE240 problem 1.14
Find the last digit
Determine whether the input is divisible by 3 as well as 5
find a specific element from an matrix
multiply an array by its position number
Choose a web site to get translated content where available and see local events and offers. Based on your location, we recommend that you select: .
You can also select a web site from the following list:
Select the China site (in Chinese or English) for best site performance. Other MathWorks country sites are not optimized for visits from your location.
Contact your local office