Descending sort

desc x    desc[x]

Returns x sorted into descending order. The function is uniform. The sort is stable: it preserves order between equals.

Where x is a

• vector, it is returned sorted
• mixed list, the result is sorted within datatype
• dictionary or table, the result is sorted by the first key value or column (respectively).

q)desc 2 1 3 4 2 1 2                    / vector
4 3 2 2 2 1 1

q)desc (1;1b;"b";2009.01.01;"a";0)      / mixed list
2009.01.01
"b"
"a"
1
0
1b

q)t:([]a:3 4 1;b:`a`d`s)                / table
q)desc t
a b
---
4 d
3 a
1 s