add new problem invert values

problem-29.js

@@ -0,0 +1,14 @@
+/*Given a set of numbers, return the additive inverse of each. 
+Each positive becomes negatives, and the negatives become positives.
+ You can assume that all values are integers.*/
+
+function invert(array) {
+ const arr = [];
+ if (array.length == 0)
+ return array
+ for (let e of array) {
+ arr.push(-e)
+ }
+
+ return arr;
+}