How can I have matlab identify if a specific element is repeated a specific number of times?

Lets say a I have a 10 by 10 matrix with a random combination of numbers. So I want MATLAB to check a specific number is repeated a specific times. For example, what can I type if I want MATLAB to check if the number 1 is repeated 3 times in the 10 by 10 matrix?

Answer 1

[Walter Roberson]

sum(A(:) == 1) == 3

[George]

So if I would like to see if the number 2 is in the matrix 3 times would I type

sum(A(:)==2)==3

[Walter Roberson]

Yes,

sum(A(:) == NumberToTestFor) == CountRequired

Answer 2

[Muruganandham Subramanian]

try this:

 find(A==1)

If you would like to know more,

>>help find

[Walter Roberson]

That does not check to see if the element was repeated the correct number of times.

[Muruganandham Subramanian]

If you need to check for no.of times, assign a variable

   c=find(A==1)
   size(c)

[Walter Roberson]

You can apply size() to an expression

size(find(A==1))

size() is, either way, going to return a vector of dimensions. Which of those elements should George check? Will the answer vary in newer MATLAB versions which are changing the rules about whether various functions return row outputs or column outputs?