Task

Write a program to find the sum of squares of a numeric vector.

The program should work on a zero-length vector (with an answer of   0).



Related task

   Mean


# ss for an input array:
def ss: map(.*.) | add;
 
# ss for a stream, S, without creating an intermediate array:
def ss(S): reduce S as $x (0; . + ($x * $x) );