45 lines
764 B
Bash
Executable File
45 lines
764 B
Bash
Executable File
#!/bin/bash
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declare -A dots
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folds=()
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while read line; do
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if [[ $line == *','* ]]; then
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dots[$line]=1
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else
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folds+=( ${line#fold along } )
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fi
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done
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fold=${folds[0]}
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fold_axis=${fold%=*}
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fold_coord=${fold#*=}
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new_dots=()
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todel_dots=()
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for dot in ${!dots[@]}; do
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dot_x=${dot%,*}
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dot_y=${dot#*,}
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if [[ $fold_axis == 'x' ]]; then
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if [ $dot_x -gt $fold_coord ]; then
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new_dots+=( "$((fold_coord*2-dot_x)),$dot_y" )
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todel_dots+=( $dot )
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fi
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else
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if [ $dot_y -gt $fold_coord ]; then
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new_dots+=( "$dot_x,$((fold_coord*2-dot_y))" )
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todel_dots+=( $dot )
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fi
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fi
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done
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for todel_dot in ${todel_dots[@]}; do
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unset dots[$todel_dot]
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done
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for new_dot in ${new_dots[@]}; do
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dots[$new_dot]=1
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done
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echo ${#dots[@]}
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