Docs: Update benchmark for stealth/union-alpha EFF:high

tests/2_convex_hull/outputs/stealth_union-alpha EFF_high.js

@@ -0,0 +1,38 @@
+async function findConvexHull(points) {
+  if (!Array.isArray(points) || points.some(
+    p => !p || !Number.isFinite(p.x) || !Number.isFinite(p.y)
+  )) {
+    throw new TypeError("Expected an array of points with finite numeric x and y.");
+  }
+
+  const { default: _ } = await import(
+    "https://cdn.jsdelivr.net/npm/lodash@4.17.21/+esm"
+  );
+  const sorted = _.sortBy(
+    _.uniqBy(points, p => JSON.stringify([p.x, p.y])),
+    ["x", "y"]
+  );
+
+  if (sorted.length < 3) return sorted;
+
+  const cross = (a, b, c) =>
+    (b.x - a.x) * (c.y - a.y) - (b.y - a.y) * (c.x - a.x);
+
+  const build = list => {
+    const hull = [];
+    for (const p of list) {
+      while (
+        hull.length > 1 &&
+        cross(hull[hull.length - 2], hull[hull.length - 1], p) <= 0
+      ) hull.pop();
+      hull.push(p);
+    }
+    hull.pop();
+    return hull;
+  };
+
+  return [...build(sorted), ...build([...sorted].reverse())];
+}
+export default findConvexHull;
+// Generation time: 113.790s
+// Result: PASS