Return the full string representation of array Z with no truncation, even
for arrays large enough that NumPy would normally abbreviate the printed output with
an ellipsis.
Input
[ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19]
Output
'[ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19]'