Problem 39. Which values occur exactly three times?
Return a list of all values (sorted smallest to largest) that appear exactly three times in the input vector x. So if
x = [1 2 5 2 2 7 8 3 3 1 3 8 8 8]
then
y = [2 3]
Solution Stats
Problem Comments
-
5 Comments
why 'tabulate' function does not work here. It gives an error saying undefined function.
http://www.mathworks.in/help/stats/tabulate.html
Ashan, tabulate is in stats. Cody does not have Statistics Toolbox.
the in-build function tabulate cannot used in here.
I never thought I could use this line of code for this problem but what do you know
i have used a loop construct for this but apparently there are far faster ways (length: 20ish instead of 80-100)
Solution Comments
Show commentsProblem Recent Solvers5002
Suggested Problems
-
Return elements unique to either input
757 Solvers
-
middleAsColumn: Return all but first and last element as a column vector
595 Solvers
-
Create an n-by-n null matrix and fill with ones certain positions
555 Solvers
-
405 Solvers
-
Check that number is whole number
3984 Solvers
More from this Author96
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!