pull request

src/challenge.ts

@@ -5,23 +5,30 @@
 // and returns the modified groceries list
 function deleteThirdItem(groceries: string[]): string[] {
   // write your code here...
-  return [];
+  // delete groceries[2]; this will produce an undefined value baaddd practice
+  groceries.splice(2, 1); // at index 2 delete one element, it will update the array length accordingly, look into mdn docs for splice
+
+  return groceries;
 }
 
 // Step 2:
 // Write a insertItemAtBeginning function that inserts a new grocery item at the beginning of the groceries argument
 // and returns the modified groceries array
 function insertItemAtBeginning(groceries: string[], item: string): string[] {
   // write your code here...
-  return [];
+  groceries.unshift(item);
+  return groceries;
 }
 
 // Step 3:
 // Write a replaceFirstTwoItems function that replace the first two elements with 'ketchup' and 'chili'
 // and return the modified groceries array
 function replaceFirstTwoItems(groceries: string[]): string[] {
   // write your code here...
-  return [];
+  // this will replace not append new items
+  groceries[0] = "ketchup";
+  groceries[1] = "chili";
+  return groceries;
 }
 
 export { deleteThirdItem, insertItemAtBeginning, replaceFirstTwoItems };

src/groceries.ts

@@ -2,40 +2,50 @@
 // Write a createGroceries function that returns an array with 6 groceries items (each item is a string)
 function createGroceries(): string[] {
   // write your code here...
-
-  return []; // replace empty array with what you see is fit
+  let groceries: string[] = [
+    "eggs",
+    "milk",
+    "flour",
+    "butter",
+    "vanilla extract",
+    "cocoa powder",
+  ];
+  return groceries; // replace empty array with what you see is fit
 }
 
 // Step 2:
 // Write a getSecondGroceryItem function that returns the second grocery item from `groceries` argument
 function getSecondGroceryItem(groceries: string[]): string {
   // write your code here...
 
-  return ""; // replace empty string with what you see is fit
+  return groceries[1]; // replace empty string with what you see is fit
 }
 
 // Step 3:
 // Write a getGroceriesCount that returns the length of the `groceries` argument
 function getGroceriesCount(groceries: string[]): number {
   // write your code here...
-
-  return 0; // replace zero with what you see is fit
+  let GroceriesCount: number = groceries.length;
+  return GroceriesCount; // replace zero with what you see is fit
 }
 
 // Step 4:
 // Write a getLastGroceryItem function that returns the last grocery item from `groceries` argument
 function getLastGroceryItem(groceries: string[]): string {
   // write your code here...
 
-  return ""; // replace empty string with what you see is fit
+  let lastGroceryItem: string = groceries[groceries.length - 1];
+
+  return lastGroceryItem; // replace empty string with what you see is fit
 }
 
 // Step 5:
 // Write a removeLastGroceryItem function that removes the last grocery item and return it
-function removeLastGroceryItem(groceries: string[]): string {
+function removeLastGroceryItem(groceries: string[]): string | undefined {
+  // the OR undefined type added because the return function was throwing an error that pop returns either string or undefined
   // write your code here...
-
-  return ""; // replace empty string with what you see is fit
+  let removedLastGroceryItem = groceries.pop();
+  return removedLastGroceryItem; // replace empty string with what you see is fit
 }
 
 // Step 6:
@@ -48,15 +58,22 @@ function addNewGroceries(
 ): string[] {
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  groceries.push(itemOne);
+  groceries.push(itemTwo);
+
+  return groceries; // replace empty array with what you see is fit
 }
 
 // Step 7:
 // Write a getFirstThreeGroceryItems function that returns a new array that contains the first three grocery items
 function getFirstThreeGroceryItems(groceries: string[]): string[] {
   // write your code here...
-
-  return []; // replace empty array with what you see is fit
+  let firstThreeGroceryItems: string[] = [
+    groceries[0],
+    groceries[1],
+    groceries[2],
+  ];
+  return firstThreeGroceryItems; // replace empty array with what you see is fit
 }
 
 export {