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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 2022
By
Jo Wood
Edited
Dec 2
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Advent of Code: 2022 Day 1
•
1 fork
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function
toSnafu
(
n
)
{
const
toSym
=
[
"="
,
"-"
,
"0"
,
"1"
,
"2"
]
;
const
toS
=
(
n
)
=>
n
===
0
?
""
:
toS
(
Math
.
floor
(
(
n
+
2
)
/
5
)
)
.
concat
(
toSym
[
(
n
+
2
)
%
5
]
)
;
return
n
==
0
?
"0"
:
toS
(
n
)
;
}
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function
fromSnafu
(
s
)
{
const
fromSym
=
{
"="
:
-
2
,
"-"
:
-
1
,
"0"
:
0
,
"1"
:
1
,
"2"
:
2
}
;
return
s
.
split
(
""
)
.
map
(
(
sym
)
=>
fromSym
[
sym
]
)
.
reverse
(
)
.
reduce
(
(
total
,
v
,
i
)
=>
total
+
v
*
Math
.
pow
(
5
,
i
)
)
;
}
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function
part1
(
input
)
{
return
toSnafu
(
AOC
.
sum
(
input
.
split
(
"\n"
)
.
map
(
fromSnafu
)
)
)
;
}
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toSnafu
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