collections: companion code for the How to Sort a HashMap by Value (and Key) post

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01KqJyCidz3ZgRyHABv2GVJh

collections/scripts/run-all.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+# Regenerates every file in ../output/. Requires JDK25_HOME.
+set -euo pipefail
+[[ -z "${JDK25_HOME:-}" ]] && { echo "JDK25_HOME must be set" >&2; exit 1; }
+cd "$(dirname "$0")/.."
+OUT=output; mkdir -p "$OUT"
+export JAVA_HOME="$JDK25_HOME"
+mvn -q -f ../pom.xml -pl collections -am package
+J="$JDK25_HOME/bin/java"
+run() { echo "==> $1"; "$J" -cp target/classes "com.ankurm.collections.$1" 2>&1 | grep -v "Picked up" > "$OUT/$2"; }
+run SortByValueDemo 01-sort-by-value.txt
+run TieBugDemo      02-tie-bug.txt
+run TopNDemo        03-top-n.txt
+run SequencedDemo   04-sequenced.txt
+for b in HashMapIsNotSequenced:05 SortMapDirectly:06; do
+  n=${b%%:*}; k=${b##*:}
+  "$JDK25_HOME/bin/javac" -d /tmp/lc-coll src/broken/$n.java 2>&1 | grep -v "Picked up" > "$OUT/$k-$n-compile-error.txt" || true
+done
+echo "==> JMH"
+"$J" -jar target/benchmarks.jar SortingBenchmark -rf text -rff "$OUT/07-jmh-raw.txt" 2>&1 | grep -v "Picked up" > /dev/null
+cp target/surefire-reports/com.ankurm.collections.SortingTest.txt "$OUT/08-tests.txt"
+echo Done