Periodic table: Difference between revisions
julia example
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Line 137:
Element 89 -> 9, 4
Element 113 -> 7, 13
</pre>
=={{header|Julia}}==
{{trans|Wren}}
<lang ruby>const limits = [3:10, 11:18, 19:36, 37:54, 55:86, 87:118]
function periodic_table(n)
(n < 1 || n > 118) && error("Atomic number is out of range.")
n == 1 && return [1, 1]
n == 2 && return [1, 18]
n >= 57 && n <= 71 && return [8, n - 53]
n >= 89 && n <= 103 && return [9, n - 85]
row, limitstart, limitstop = 0, 0, 0
for i in eachindex(limits)
if limits[i].start <= n <= limits[i].stop
row, limitstart, limitstop = i + 1, limits[i].start, limits[i].stop
break
end
end
return (n < limitstart + 2 || row == 4 || row == 5) ?
[row, n - limitstart + 1] : [row, n - limitstop + 18]
end
for n in [1, 2, 29, 42, 57, 58, 59, 71, 72, 89, 90, 103, 113]
rc = periodic_table(n)
println("Atomic number ", lpad(n, 3), " -> ($(rc[1]), $(rc[2]))")
end
</lang>{{out}}
<pre>
Atomic number 1 -> (1, 1)
Atomic number 2 -> (1, 18)
Atomic number 29 -> (4, 11)
Atomic number 42 -> (5, 6)
Atomic number 57 -> (8, 4)
Atomic number 58 -> (8, 5)
Atomic number 59 -> (8, 6)
Atomic number 71 -> (8, 18)
Atomic number 72 -> (6, 4)
Atomic number 89 -> (9, 4)
Atomic number 90 -> (9, 5)
Atomic number 103 -> (9, 18)
Atomic number 113 -> (7, 13)
</pre>
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