Update sumAll-solution.js

Change the swapping algorithm to the standard way of swapping using array restructuring.

Author: cats256

05_sumAll/solution/sumAll-solution.js

@@ -1,11 +1,8 @@
 const sumAll = function (min, max) {
   if (!Number.isInteger(min) || !Number.isInteger(max)) return "ERROR";
   if (min < 0 || max < 0) return "ERROR";
-  if (min > max) {
-    const temp = min;
-    min = max;
-    max = temp;
-  }
+  if (min > max) [min, max] = [max, min];
+
   let sum = 0;
   for (let i = min; i < max + 1; i++) {
     sum += i;