Another take at Pivoting Text data

When I was interviewed the approach I took was on these lines:-

SELECT col1,
MAX(CASE WHEN rn = 1
      THEN col2 ELSE NULL
    END ) col21,
MAX(CASE WHEN rn = 2
    THEN col2 ELSE NULL
    END ) col22,
MAX(CASE WHEN rn = 3
      THEN col2 ELSE NULL
    END ) col23
FROM
(SELECT col1,col2,row_number() over (partition BY col1 order by col2) rn
  FROM test  
)
GROUP BY col1

The results were same as from the previous post