How do I replicate items from a list in Clojure? -

i've tried many nights i've given on myself. seems extremely simple problem, guess i'm not understanding clojure should (i partially attribute sole experience imperative languages). problem hackerrank.com

here problem:

problem statement    given list repeat each element of list n times. input , output  portions handled automatically grader.  input format      first line has integer s s number of times need repeat  elements. after there x lines, each containing integer. these  x elements of array.  output format      repeat each element of original list s times. have return  list/vector/array of s*x integers. relative positions of values should  same original list provided input.  constraints  0<=x<=10  1<=s<=100 

so, given:

2 1 2 3 

output:

1 1 2 2 3 3 

i've tried:

(fn list-replicate [num list]     (println (reduce          (fn [element seq] (dotimes [n num] (conj seq element)))         []         list)) ) 

but gives me exception. i've tried many other solutions, , isn't 1 of better ones, quickest 1 come post here.

(defn list-replicate [num list]   (mapcat (partial repeat num) list)) 

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(doseq [x (list-replicate 2 [1 2 3])]   (println x))  ;; output: 1 1  2 2 3  3