Conditional find in matlab

I = find(X == a,1,'first'), J = find(X == b,1,'first'), K = find(X == c,1,'first') provided that K > J > I How can I implement the conditional part? Thanks in advance.

Answer 1

[Les Beckham]

X = [10 20 30 40 50 10 20 30 40 50];
a = 30;
b = 20;
I = find(X == a, 1, 'first')

I = 3

J = find(X((I+1):end) == b, 1, 'first') + I % start search after index I

J = 7

X(I)

ans = 30

X(J)

ans = 20

[Amir Mahmoudi]

Is it possible to write your codes in terms of > or < ?

[Les Beckham]

Sure, just change the == to whatever you want instead.