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  1. fillnexts = ...
  2. @(v)repelem(v,diff([0,v]))
  3.  
  4.  
  5. fillnexts([1])
  6. fillnexts([3])
  7. fillnexts([1, 2, 3])
  8. fillnexts([1, 3, 4, 9])
  9. fillnexts([2, 3, 5, 7, 11])
  10.  
Success #stdin #stdout 0.11s 44640KB
stdin
Standard input is empty
stdout
fillnexts =

@(v) repelem (v, diff ([0, v]))

ans =  1
ans =

   3
   3
   3

ans =

   1   2   3

ans =

   1   3   3   4   9   9   9   9   9

ans =

    2    2    3    5    5    7    7   11   11   11   11