RosettaCodeData/Task/Zig-zag-matrix/AppleScript/zig-zag-matrix-2.applescript

35 lines
850 B
AppleScript

set n to 5
set m to {}
repeat with i from 1 to n
set end of m to {} -- Built a foundation for the matrix out of n empty lists.
end repeat
set {v, d, i} to {0, -1, 1}
repeat while v < n ^ 2
if length of m's item i < n then
set {end of m's item i, i, v} to {f(v, n), i + d, v + 1}
if i < 1 then
set {i, d} to {1, -d}
else if i > n then
set {i, d} to {n, -d}
else if i > 1 and (count of m's item (i - 1)) = 1 then
set d to -d
end if
else
set {i, d} to {i + 1, 1}
end if
end repeat
-- Handler/function to format the cells on the fly.
on f(v, n)
return (characters -(length of (n ^ 2 as string)) thru -1 of (" " & v)) as string
end f
-- Reformat the matrix into a table for viewing.
set text item delimiters to ""
repeat with i in m
set i's contents to (i as string) & return
end repeat
return return & m as string