Swap as destructuring assignment (trekhleb#497)

Author: vladimirschneider

src/algorithms/sorting/insertion-sort/InsertionSort.js

@@ -21,9 +21,7 @@ export default class InsertionSort extends Sort {
         this.callbacks.visitingCallback(array[currentIndex - 1]);
 
         // Swap the elements.
-        const tmp = array[currentIndex - 1];
-        array[currentIndex - 1] = array[currentIndex];
-        array[currentIndex] = tmp;
+        [array[currentIndex - 1], array[currentIndex]] = [array[currentIndex], array[currentIndex - 1]];
 
         // Shift current index left.
         currentIndex -= 1;