(Solved Now) Gateoverflow test doubt

Question

In https://gateoverflow.in/343341/Gate-overflow-data-structures-1-11 

Suppose $L$ is : 10 → 50 → 20 → 40 → 30

& $K$ is : 4, 1, 5

Wouldn’t the explained algorithm print values: 10 40 30 instead of 40 10 30?

Won’t it require an algorithm that searches $L$ one by one for all values of $K$ in $O(nk)$ ?

Comments

the order is not really a concern here.