Maby this one needs some more test suites ;)
Determine if a Given Number is a Triangle Number
Getting the indices from a matrice
Do Fast Fourier Transformation
2倍してみよう - ここからスタート！
Convert a number to its Roman representation
Reverse a matrix
Find the area of the four walls
Find the treasures in MATLAB Central and discover how the community can help you!
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