i am facing error to know index of element

I know, that number, for example, 5, is an element in array X, but I don't know it's index. In Python, I can use:

X.index(5)

in addation i want to ignore the second element

I realized this function, using for loop and if statement, but did Matlab doesn't have build-in similar function?

for example:

A=[1 2 3 4 5 6 6 7 8 5]

res=find(5)==A;

the output: will be

5,10

i want to ignore 10

the result will be 5 only

Answer 1

[Tommy]

find(A==5,1)

will give you just the first index in A which equals 5.