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Jo Wood
Professor of Visual Analytics interested in design, geovisualization, visual storytelling and computational thinking.
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Ξ🎄Advent of Code 2023
By
Jo Wood
Edited
Dec 2
Paused
1 fork
2 stars
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function
parse
(
input
)
{
return
input
.
split
(
"\n"
)
.
map
(
(
line
)
=>
line
.
split
(
/\s+/
)
.
map
(
Number
)
)
;
}
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function
next
(
ns
)
{
const
diffs
=
ns
.
slice
(
1
)
.
map
(
(
n
,
i
)
=>
n
-
ns
[
i
]
)
;
// Find consecutive differences
if
(
diffs
.
every
(
(
d
)
=>
d
===
diffs
[
0
]
)
)
{
return
ns
.
at
(
-
1
)
+
diffs
[
0
]
;
// Differences constant
}
return
ns
.
at
(
-
1
)
+
next
(
diffs
)
;
// Differences not constant, so recurse
}
Insert cell
function
part1
(
input
)
{
return
AOC
.
sum
(
parse
(
puzzleInput
)
.
map
(
next
)
)
;
}
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function
part2
(
input
)
{
return
AOC
.
sum
(
parse
(
puzzleInput
)
.
map
(
(
ns
)
=>
next
(
ns
.
reverse
(
)
)
)
)
;
}
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$
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