Done

arrays.js

@@ -0,0 +1,43 @@
+var chocolateBars = ["snickers", "hundred grand", "kitkat", "skittles"];
+var foo = "foo"
+//array created
+function addElementToBeginningOfArray(chocolateBars, foo){
+  return[foo, ...chocolateBars];
+}
+//added "foo" to the beginning of the array and did not alter the original array
+function destructivelyAddElementToBeginningOfArray(chocolateBars, foo){
+  chocolateBars.unshift(foo);
+  return chocolateBars;
+}
+//added foo to the beginning of the array, however, due to the unshift element, it changed the original array
+function addElementToEndOfArray(chocolateBars,foo){
+  return[...chocolateBars,foo];
+}
+//added "foo" to the end of the array and did not alter the original array
+function destructivelyAddElementToEndOfArray(chocolateBars,foo){
+  chocolateBars.push(foo);
+  return chocolateBars;
+}
+//added "foo" to the end of the array, and due to the "push" element, it altered the original array
+function accessElementInArray(chocolateBars,index){
+  return(chocolateBars[2]);
+}
+//accessed the second element of chocolate bars using index 2 
+function destructivelyRemoveElementFromBeginningOfArray(chocolateBars,index){
+  chocolateBars.shift();
+  return chocolateBars;
+}
+//removed the 1st element from the array and mutated the array
+function removeElementFromBeginningOfArray(chocolateBars){
+  return chocolateBars.slice(1);
+}
+//removed the first element without mutating the original element
+function destructivelyRemoveElementFromEndOfArray(chocolateBars){
+  chocolateBars.pop();
+  return chocolateBars;
+}
+//removed element from end of the array and mutated it using pop 
+function removeElementFromEndOfArray(chocolateBars){
+ chocolateBars=chocolateBars.slice(0, chocolateBars.length - 1);
+  return chocolateBars;
+}