MATLAB: Replication of elements in a vector

Question

There's a data set

 x = [1 2.2 1.5 4 2]

Consider a index vector

 indx = [0 0 2 1 2]

The number of copies of each element in 'x' is given in 'indx.' I want a new vector in which the elements of x are arranged according to indx, i.e., the output should be

 xnew = [1.5 1.5 4 2 2]

Could you please suggest ways to do this without a for loop?

Answer 1

repelem(x,indx)