private static int guessNcols(ParserSetup setup, String[][] data) {
int res = data[0].length;
if (setup._header) return res;
boolean samelen = true;
for (String[] s : data) samelen &= (s.length == res);
if (samelen) return res;
// we don't have lines of same length, pick the most common length
HashMap<Integer, Integer> lengths = new HashMap<Integer, Integer>();
for (String[] s : data) {
if (!lengths.containsKey(s.length)) lengths.put(s.length, 1);
else lengths.put(s.length, lengths.get(s.length) + 1);
}
int maxCnt = 0;
for (Map.Entry<Integer, Integer> e : lengths.entrySet())
if (e.getValue() > maxCnt) {
maxCnt = e.getValue();
res = e.getKey();
}
return res;
}
