X-Git-Url: https://git.sommitrealweird.co.uk/advent-of-code-2019.git/blobdiff_plain/8d19ec771c083ce8bbfff9b075d42f15ad704831..24a0a2360eb2e4b4332ce45ba5888e72f970428a:/day3/wires_2.sh?ds=sidebyside

diff --git a/day3/wires_2.sh b/day3/wires_2.sh
deleted file mode 100644
index 1e86e0c..0000000
--- a/day3/wires_2.sh
+++ /dev/null
@@ -1,114 +0,0 @@
-#!/bin/bash
-
-set -u
-set -e
-
-# these wires should give 6
-#wire_1=(R8 U5 L5 D3)
-#wire_2=(U7 R6 D4 L4)
-
-# these wires should get 159
-#wire_1=(R75 D30 R83 U83 L12 D49 R71 U7 L72)
-#wire_2=(U62 R66 U55 R34 D71 R55 D58 R83)
-
-# these wires should get 135
-#wire_1=(R98 U47 R26 D63 R33 U87 L62 D20 R33 U53 R51)
-#wire_2=(U98 R91 D20 R16 D67 R40 U7 R15 U6 R7)
-
-# read in data from file instead
-exec 3<input.txt
-IFS="," read -u 3 -a wire_1
-IFS="," read -u 3 -a wire_2
-
-trace_wire() {
-    local -n w=$1
-    local -n b=$2
-    local -n c=$3
-    local -n w1cost=$4
-    wire_number=$5
-    cur_vert=0
-    cur_horz=0
-    moved=0
-    last_replace_char="-"
-    cost=0
-
-    for operation in "${w[@]}"; do
-        direction=${operation:0:1}
-        amount=${operation:1}
-        case $direction in
-            U)
-                operator=+
-                ;;
-            D)
-                operator=-
-                ;;
-            L)
-                operator=-
-                ;;
-            R)
-                operator=+
-                ;;
-        esac
-
-        case $direction in
-            U|D)
-                for (( moved=1; moved <= $amount; moved++ )); do
-                    cur_vert=$((cur_vert${operator}1))
-                    cost=$((cost+1))
-                    if [ $wire_number -eq 1 ]; then
-                        if ! [ ${w1cost[$cur_horz,$cur_vert]+a} ]; then
-                            w1cost[$cur_horz,$cur_vert]=$cost
-                        fi
-                    fi
-                    if [ ${b[$cur_horz,$cur_vert]+a} ] && [ $wire_number -eq 2 ]; then
-                        if [ ${b[$cur_horz,$cur_vert]} -eq 1 ]; then
-                            cross_wires[$cur_horz,$cur_vert]=$((${w1cost[$cur_horz,$cur_vert]}+$cost))
-                            b[$cur_horz,$cur_vert]=3
-                        fi
-                        continue
-                    fi
-                    b[$cur_horz,$cur_vert]=$wire_number
-                done
-                ;;
-            L|R)
-                for (( moved=1; moved <= $amount; moved++ )); do
-                    cur_horz=$((cur_horz${operator}1))
-                    cost=$((cost+1))
-                    if [ $wire_number -eq 1 ]; then
-                        if ! [ ${w1cost[$cur_horz,$cur_vert]+a} ]; then
-                            w1cost[$cur_horz,$cur_vert]=$cost
-                        fi
-                    fi
-                    if [ ${b[$cur_horz,$cur_vert]+a} ] && [ $wire_number -eq 2 ]; then
-                        if [ ${b[$cur_horz,$cur_vert]} -eq 1 ]; then
-                            cross_wires[$cur_horz,$cur_vert]=$((${w1cost[$cur_horz,$cur_vert]}+$cost))
-                            b[$cur_horz,$cur_vert]=3
-                        fi
-                        continue
-                    fi
-                    b[$cur_horz,$cur_vert]=$wire_number
-                done
-                ;;
-        esac
-    done
-}
-
-declare -A board
-declare -A cross_wires
-declare -A wire_1_cost
-echo "Tracing first wire"
-trace_wire wire_1 board cross_wires wire_1_cost 1
-echo "Tracing second wire"
-trace_wire wire_2 board cross_wires wire_1_cost 2
-
-echo "Wires cross at:"
-min_cost=-1
-for cross in "${!cross_wires[@]}"; do
-    echo "  $cross ${cross_wires[$cross]}"
-    cost=${cross_wires[$cross]}
-    if [ $min_cost -lt 0 ] || [ $min_cost -gt $cost ]; then
-        min_cost=$cost
-    fi
-done
-
-echo Min cost: $min_cost