object exercises implemented

exercises/001.js

@@ -23,5 +23,7 @@ function transformFirstAndLast(array) {
 */
 
 function transformFirstAndLast(array) {
-  //your code here
-}
+  var obj = {};
+  obj[array[0]] = array[array.length - 1];
+  return obj;
+}

exercises/002.js

@@ -25,6 +25,12 @@ function getAllKeys(obj) {
 }
 */
 
-function getAllKeys(obj){
-  // your code here
+function getAllKeys(obj) {
+  var ret = [];
+
+  for (key in obj) {
+    ret.push(key);
+  }
+
+  return ret;
 }

exercises/003.js

@@ -13,13 +13,19 @@ Function's return value (output):
 
 Do not change the input string. Assume that all elements in the array will be of type 'string'.
 
-Note that the input may have a different number of elements than the given sample. 
+Note that the input may have a different number of elements than the given sample.
 For instance, if the input had 6 values instead of 4, your code should flexibly accommodate that.
 
 Starter Code:
 */
 
 function fromListToObject(array) {
-  // your code here
+  var ret = {};
 
+  for(i = 0; i < array.length; i++)
+  {
+      ret[array[i][0]] = array[i][1];
+  }
+
+  return ret;
 }

exercises/004.js

@@ -11,7 +11,7 @@ Example input:
 Function's return value (output):
 ['Krysten', 33, false]
 
-Note that the input may have a different number of keys and values than the given sample. 
+Note that the input may have a different number of keys and values than the given sample.
 
 E.g. it should also handle an input like:
 {
@@ -28,6 +28,12 @@ Starter Code
 */
 
 function listAllValues(obj) {
-  // your code here
+  var ret = [];
 
-}
+  for(key in obj)
+  {
+    ret.push(obj[key]);
+  }
+
+  return ret;
+}

exercises/005.js

@@ -17,14 +17,27 @@ Given that input, the return value should look like this:
     {firstName: 'Mary', lastName: 'Jenkins', age: 36, role: 'manager'}
 ]
 
-Note that the input may have a different number of rows or different keys than the given sample. 
+Note that the input may have a different number of rows or different keys than the given sample.
 
 For example, let's say the HR department adds a "tshirtSize" field to each employee record. Your code should flexibly accommodate that.
 
 Starter Code :
 */
 
 function transformEmployeeData(array) {
-  // your code here
+  var ret = [];
 
+  for(i = 0; i < array.length; i++)
+  {
+    var newObj = {};
+
+    for(j = 0; j < array[i].length; j++)
+    {
+      newObj[array[i][j][0]] = array[i][j][1];
+    }
+
+    ret.push(newObj);
+  }
+
+  return ret;
 }

exercises/006.js

@@ -22,5 +22,12 @@ Starter Code:
 */
 
 function convertObjectToList(obj) {
-  // your code here
-}
+  var ret = [];
+
+  for(key in obj)
+  {
+      ret.push([key, obj[key]]);
+  }
+
+  return ret;
+}

exercises/007.js

@@ -1,11 +1,11 @@
 /*
 Write a function called "greetCustomer".
 
-Given a name, "greetCustomer" returns a greeting based on how many times that customer has visited the restaurant.  Please refer to the customerData object. 
+Given a name, "greetCustomer" returns a greeting based on how many times that customer has visited the restaurant.  Please refer to the customerData object.
 
 The greeting should be different, depending on the name on their reservation.
 
-Case 1 - Unknown customer ( Name is not present in customerData ): 
+Case 1 - Unknown customer ( Name is not present in customerData ):
 
 var output = greetCustomer('Terrance');
 console.log(output); // --> 'Welcome! Is this your first time?'
@@ -48,9 +48,16 @@ var customerData = {
 };
 
 function greetCustomer(firstName) {
-  var greeting = '';
-  // your code here
+  var greeting = 'Welcome! Is this your first time?';
+
+  if (firstName in customerData) {
+    if (customerData[firstName].visits == 1) {
+      greeting = "Welcome back, " + firstName + "! We're glad you liked us the first time!";
+    }
+    else if (customerData[firstName].visits > 1) {
+      greeting = "Welcome back, " + firstName + "! So glad to see you again!";
+    }
+  }
 
   return greeting;
 }
-