extra-array - npm Package Compare versions

Comparing version 2.0.15 to 2.0.16

fresh.js

@@ -65,8 +65,24 @@ // PURE FUNCTIONS
 /**
- * Lists all permutations.
+ * Lists all possible partial sequences.
  * @param {array} x array
+ * @returns {Iterable} subsequence ...
+ */
+function* subsequences(x) {
+  if(x.length===0) { yield []; return; }
+  var y = x.slice(0, -1);
+  for(var s of subsequences(y))
+    yield s;
+  for(var s of subsequences(y)) {
+    s.push(x[x.length-1]);
+    yield s;
+  }
+}
+
+/**
+ * Lists all possible arrangements.
+ * @param {array} x array
  * @returns {Iterable} permutation ...
  */
 function* permutations(x) {
-  if(x.length===0) yield [];
+  if(x.length===0) { yield []; return; }
   for(var i=x.length-1; i>=0; i--) {
@@ -231,2 +247,3 @@ var y = splice(x, i);
 exports.permutations = permutations;
+exports.subsequences = subsequences;
 exports.max = max;
@@ -233,0 +250,0 @@ exports.min = min;

package.json

 {
   "name": "extra-array",
-  "version": "2.0.15",
+  "version": "2.0.16",
   "description": "Standard utility methods for Array.",
@@ -5,0 +5,0 @@ "main": "index.js",

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Total package byte prevSize

24108

increased by1.73%

Lines of code

638

increased by2.57%

No dependency changes