Update pair function to include reverse pairs (#2)

* Update pair function to include reverse pairs * Formatting * Sort reverse pairs * Formatting * Formatting * Simplify pair function * Simplify pair function --------- Co-authored-by: Paul Littlewood <paullittlewood@numiko.com>
domchristie · Jan 25, 2024 · 19f8d5d · 19f8d5d
1 parent 1aac4b3
commit 19f8d5d
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/lib/utils.js b/lib/utils.js
@@ -1,6 +1,6 @@
-// n choose 2
+// Generate all possible pairs from the given array (including reverse pairs)
 function pair (array) {
-  return array.map((v, i) => array.slice(i + 1).map(w => [v, w])).flat()
+  return array.map((v, i) => array.slice(i + 1).map(w => [[v, w], [w, v]])).flat(2)
 }
 
 function calcValue (min, max) {