tasks a-s

Task/Power-set/JavaScript/power-set.js

@@ -0,0 +1,14 @@
+function powerset(ary) {
+    var ps = [[]];
+    for (var i=0; i < ary.length; i++) {
+        for (var j = 0, len = ps.length; j < len; j++) {
+            ps.push(ps[j].concat(ary[i]));
+        }
+    }
+    return ps;
+}
+
+var res = powerset([1,2,3,4]);
+
+load('json2.js');
+print(JSON.stringify(res));