How to identify array elements that occur more than once ?

38 visualizaciones (últimos 30 días)
pavan sunder
pavan sunder el 21 de Dic. de 2016
Comentada: Juan Velasquez el 28 de En. de 2021
For example D=[1 2 3 3 3 4 5 6 7 7 8]
I want to identify the elements that occur more than once.
The expected answer with respect to the above example Would be [ 3 7].
How do i do it in matlab. I can use for loop but i want to find out is there a better approach..

Respuestas (2)

KSSV
KSSV el 21 de Dic. de 2016
Editada: KSSV el 21 de Dic. de 2016
Read about unique
find(hist(D,unique(D))>1)
  1 comentario
Stephen23
Stephen23 el 21 de Dic. de 2016
This answer does not return the values as requested, e.g.:
>> D = [2 3 3 3 4 5 6 7 7 8];
>> find(hist(D,unique(D))>1)
ans =
2 6
See my answer for the correct code.

Iniciar sesión para comentar.


Stephen23
Stephen23 el 21 de Dic. de 2016
>> U = unique(D);
>> U(1<histc(D,unique(D)))
ans =
3 7

Categorías

Más información sobre Get Started with MATLAB en Help Center y File Exchange.

Etiquetas

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by