Raghad Butaiban

src/challenge.ts

@@ -5,14 +5,23 @@
 // and returns the modified groceries list
 function deleteThirdItem(groceries: string[]): string[] {
   // write your code here...
-  return [];
+  if (groceries !== undefined && groceries.length > 3){
+    groceries.splice(2,1);
+    return groceries;
+  }else
+    return [];
 }
 
 // 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...
+  if (groceries !== undefined){
+    groceries.unshift(item);
+    return groceries;
+  }else
+
   return [];
 }
 
@@ -21,6 +30,11 @@ function insertItemAtBeginning(groceries: string[], item: string): string[] {
 // and return the modified groceries array
 function replaceFirstTwoItems(groceries: string[]): string[] {
   // write your code here...
+  if (groceries !== undefined && groceries.length > 2){
+    groceries[0] = 'ketchup';
+    groceries[1] = 'chili';
+    return groceries;
+  }
   return [];
 }
 

src/groceries.ts

@@ -2,40 +2,49 @@
 // 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 arr1: string[] = ['apple','banana','orange','grape','strawberry','blueberry'];
+  return arr1; // 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
+  if (groceries.length > 2 || groceries !== undefined)
+    return groceries[1]; // replace empty string with what you see is fit
+  else
+    return "";
 }
 
 // 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
+  if(groceries !== undefined)
+    return groceries.length; // replace zero with what you see is fit
+  else
+    return -1;
 }
 
 // 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
+  if(groceries !== undefined)
+    return groceries[groceries.length-1]; 
+  else
+    return ""; // 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 {
   // write your code here...
-
-  return ""; // replace empty string with what you see is fit
+  if(groceries !== undefined){
+    let ItemL: string | undefined = groceries.pop();
+    return ItemL?ItemL:"";
+  }else
+    return ""; // replace empty string with what you see is fit
 }
 
 // Step 6:
@@ -47,16 +56,18 @@ function addNewGroceries(
   itemTwo: string
 ): string[] {
   // write your code here...
-
-  return []; // replace empty array with what you see is fit
+  groceries.push(itemOne, 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
+  if (groceries !== undefined){
+    return groceries.slice(0,3);
+  }else
+    return []; // replace empty array with what you see is fit
 }
 
 export {