Improve intersecting group behavior

2019-07-09 17:30:09 +00:00
parent 6e82a8a78b
commit b44a9d40a7
3 changed files with 26 additions and 11 deletions
--- a/utils.js
+++ b/utils.js
@@ -25,5 +25,15 @@ function intersects(set1, set2) {
  return false;
 }

+function asymDifference(set1, set2) {
+  let ret = new Set();
+  for (let item of set1) {
+    if (!set2.has(item)) {
+      ret.add(item);
+    }
+  }
+  return ret;
+}
+
 <!--# include file="MinHeap.js" -->
 <!--# include file="StringMap.js" -->