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add tools for tile manipulation, first code for part 2

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Bruno Raoult
2021-07-27 12:25:43 +02:00
parent 150e4ba2a7
commit f4348d3faf
2 changed files with 313 additions and 18 deletions
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123
2020/day20/tile.bash Normal file
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#!/usr/bin/bash
print_tile() {
local -i t=$1
# shellcheck disable=SC2206
local -a src=(${strings[$t]})
printf "%s\n" "${src[@]}"
}
flip_v() {
local -i t=$1 i
# shellcheck disable=SC2206
local -a dst src=(${strings[$t]})
for ((i=0; i<10; ++i)); do
dst[$((9-i))]=${src[$i]}
done
strings[$t]="${dst[*]}"
}
flip_h() {
local -i t=$1 i j
local str1 str2
# shellcheck disable=SC2206
local -a dst src=(${strings[$t]})
local str1 str2
for ((i=0; i<10; ++i)); do
str1=${src[$i]}
str2=""
for ((j=9; j>=0; --j)); do
str2+=${str1:$j:1}
done
dst+=("$str2")
done
strings[$t]="${dst[*]}"
}
r90() {
local -i t=$1 i j
# shellcheck disable=SC2206
local -a dst src=(${strings[$t]}) str2
local str1
for ((i=9; i>=0; --i)); do
str1=${src[$i]}
for ((j=0; j<10; ++j)); do
str2[$j]+=${str1:$j:1}
done
#dst+=("$str2")
done
strings[$t]="${str2[*]}"
}
r180() {
local -i t=$1 i j
# shellcheck disable=SC2206
local -a dst src=(${strings[$t]})
local str1 str2
for ((i=9; i>=0; --i)); do
str1=${src[$i]}
str2=""
for ((j=9; j>=0; --j)); do
str2+=${str1:$j:1}
done
dst+=("$str2")
done
strings[$t]="${dst[*]}"
}
r270() {
local -i t=$1 i j
# shellcheck disable=SC2206
local -a dst src=(${strings[$t]}) str2
local str1
for ((i=0; i<10; ++i)); do
str1=${src[$i]}
for ((j=0; j<10; ++j)); do
str2[$j]+=${str1:9-$j:1}
done
#dst+=("$str2")
done
strings[$t]="${str2[*]}"
}
left() {
local -n _r="$1"
local -i i
shift
# shellcheck disable=SC2206
local -a tile=($*)
_r=""
for ((i=0; i<10; ++i)); do
_r+=${tile[$i]:0:1}
done
}
right() {
local -n _r="$1"
local -i i
shift
# shellcheck disable=SC2206
local -a tile=($*)
_r=""
for ((i=0; i<10; ++i)); do
_r+=${tile[$i]: -1:1}
done
}
top() {
local -n _r="$1"
shift
# shellcheck disable=SC2206
local -a tile=($*)
_r=${tile[0]}
}
bottom() {
local -n _r="$1"
shift
# shellcheck disable=SC2206
local -a tile=($*)
_r=${tile[9]}
}
flip() {
local -n _r="$1"
local str="$2"
local -i i
_r=""
for ((i=9; i>=0; --i)); do
_r+=${str:$i:1}
done
}