Add day07, 2019

Solution search is implemented as shell scripts. Ugly and
fragile, but it got the task done.

1 files changed, 50 insertions, 0 deletions

diff --git a/2019/rust/day07/calibrate_amplifiers_with_feedback.sh b/2019/rust/day07/calibrate_amplifiers_with_feedback.sh
new file mode 100755
index 0000000..7a3a896
--- /dev/null
+++ b/2019/rust/day07/calibrate_amplifiers_with_feedback.sh
@@ -0,0 +1,50 @@
+#!/bin/sh -e
+
+launch_chain()
+{
+  local input_file="input_$1_$2_$3_$4_$5_$6.txt"
+  local p="input"
+
+  (echo ${6}; (echo ${5}; (echo ${4}; (echo ${3}; (echo "${2}
+  ${1}" > "${input_file}";tail -f "${input_file}")| RUST_BACKTRACE=1 \
+          ../target/debug/day07 --mode stdio --program "${p}") | \
+          ../target/debug/day07 --mode stdio --program "${p}") | \
+          ../target/debug/day07 --mode stdio --program "${p}") | \
+          ../target/debug/day07 --mode stdio --program "${p}") | \
+          ../target/debug/day07 --mode stdio --program "${p}" >> "${input_file}"
+  tail -1 "${input_file}"
+}
+
+H=0
+I=0
+P=""
+for A in `seq 5 9`; do
+  for B in `seq 5 9`; do
+    for C in `seq 5 9`; do
+      for D in `seq 5 9`; do
+        for E in `seq 5 9`; do
+          [ ${A} -ne ${B} ] || continue
+          [ ${A} -ne ${C} ] || continue
+          [ ${A} -ne ${D} ] || continue
+          [ ${A} -ne ${E} ] || continue
+          [ ${B} -ne ${C} ] || continue
+          [ ${B} -ne ${D} ] || continue
+          [ ${B} -ne ${E} ] || continue
+          [ ${C} -ne ${D} ] || continue
+          [ ${C} -ne ${E} ] || continue
+          [ ${D} -ne ${E} ] || continue
+
+          O=`launch_chain ${I} ${A} ${B} ${C} ${D} ${E}`
+          V=`echo "${O}" | tail -1 `
+          [ "${H}" -ge "${V}" ] || {
+              P="${A},${B},${C},${D},${E}";
+              H="${V}";
+              HI="${I}";
+          }
+        done
+      done
+    done
+  done
+done
+
+echo "Highest value: ${H} for phase set ${P}"