MATLAB: To get the column number of max and min number

Question

I have an array,

a=[ 1 5 3 7 4]

How can I get the position of max and min numbere?

The answer should be

max = 4 %(number 7 which is at column 4 )
min = 1 %(number 1 which is at column 1 )

Answer 1

>> a = [1,5,3,7,4]
a =
   1   5   3   7   4
>> [~,mxi] = max(a)
mxi =  4
>> [~,mni] = min(a)
mni =  1