Problem 1927. Find nth maximum
Find nth maximum in a vector of integer numbers. Return NaN if no such number exists.
x = [2 6 4 9 -10 3 1 5 -10];
So
- n_max(x,3) would find 3rd maximum value in x which is 5
- n_max(x,8) would find 8th maximum value in x which is -10
- n_max(x,9) would find 9th maximum value in x which is -10
- n_max(x,12) does not exist so return NaN
Solution Stats
Problem Comments
-
4 Comments
Show
1 older comment
Sky Sartorius
on 10 Oct 2013
The test cases expect isequal(NaN,NaN) to return true. This is wrong.
J.R.! Menzinger
on 10 Oct 2013
please use the function "isquealn" http://www.mathworks.de/de/help/matlab/ref/isequaln.html
Ned Gulley
on 15 Oct 2013
I went ahead and made the test suite change that José suggested above.
Solution Comments
Show commentsGroup

Matrix Manipulation I
- 16 Problems
- 98 Finishers
- Remove the air bubbles
- Remove NaN ?
- N-Dimensional Array Slice
- Back to basics 21 - Matrix replicating
- Back to basics 23 - Triangular matrix
- Make an awesome ramp for a tiny motorcycle stuntman
- Flip the main diagonal of a matrix
- surrounded matrix
- Some Assembly Required
- Set some matrix elements to zero
- Matrix with different incremental runs
- Removing rows from a matrix is easy - but what about inserting rows?
- Rotate input square matrix 90 degrees CCW without rot90
- Permute diagonal and antidiagonal
- Operate on matrices of unequal, yet similar, size
- Reverse the elements of an array
Problem Recent Solvers831
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!