check 2 same numbers in a matrix

Hello everyone! :)

in a matrix like:

NaDFIR_from_tool = [ 80 39 101 39 101 175 237 172 232 168 232 168 104 40 ]

how can i check that a number (in this case 39 and 168) is present 2 times?

Thank you so much!

[Pas182]

Awesome! thank you so much!

Answer 1

[Dyuman Joshi]

y= [80    39   101    39   101   175   237   172   232   168   232   168   104    40]

y = 1×14

80 39 101 39 101 175 237 172 232 168 232 168 104 40

nnz(y==39)==2

ans = logical
   1

nnz(y==168)==2

ans = logical
   1