c# - How to get multiple most commons values from array and add them to another? -

i have array this:

[2 1 2 4 3 3 1] 

i'm using this...

var query = array.groupby(item => item)     .orderbydescending(g => g.count())     .select(g => g.key)     .first(); 

.. first common value (in case : 2)

what if want multiple values (in case: 2,3,1) ?

i need add values temporary array check if temparray.count > 1.

if groups tied top count, this:

var tmp = array    .groupby(item => item)    .orderbydescending(g => g.count())    .select(g => new {        item = g.key    ,   count = g.count()    }).tolist(); var res = tmp     .takewhile(p => p.count == tmp[0].count)     .select(p => p.item)     .tolist(); 

note check tmp list count non-zero unnecessary, because way takewhile condition executed when there @ least single item in temporary list. in other words, when tmp empty, lambda condition p => p.count == tmp[0].count never reached, , out-of-range exception never thrown.