Locating entered vector values

I have a vector x=(0:1:9) and the user has to input a vector (single integers). How can i locate the values the user input in the x variable? Can it be done without using loops?

x=[0 1 2 3 4 5 6 7 8 9];

% User input vector

a=[1 4 0 0];

% I was trying this but it fails when i run the code

>> [r,c]=find(ColorNum(rst(1:end)));

Answer 1

[Bhaskar R]

ind = find(ismember(x, a))

[Stephen23]

>> [~,idx] = ismember(a,x)
idx =
     2     5     1     1