From 072b4f10eb01eabb118cfdce8ea24a45f33159ce Mon Sep 17 00:00:00 2001
From: Rishabh <mailrishabh.ra@gmail.com>
Date: Mon, 24 Feb 2020 10:10:34 +0530
Subject: [PATCH 1/3] initial commit

---
 1. objects/1.md                 | 80 +++++++++++++++++++++++++++------
 1. objects/2.js                 | 11 +++++
 2. array/1.md                   | 26 ++++++-----
 3. copy-vs-reference/index.js   | 13 +++---
 4. array-and-objects/01/main.js | 15 +++++++
 4. array-and-objects/02/main.js | 54 ++++++++++++++++++++++
 4. array-and-objects/03/main.js | 24 ++++++++++
 7 files changed, 192 insertions(+), 31 deletions(-)

diff --git a/1. objects/1.md b/1. objects/1.md
index 5e2179d..3bcd294 100644
--- a/1. objects/1.md	
+++ b/1. objects/1.md	
@@ -1,73 +1,93 @@
 1. Pick a penguin from Wikipedia's List of Fictional Penguins (https://en.wikipedia.org/wiki/List_of_fictional_penguins) and create an object named `myPenguin` with properties that represent the information listed in each column on that Wikipedia page (for example: the character's name, origin, and author).
 
 ```js
-// your code goes here
+var myPenguin ={
+    name: "Whiteblack",
+    origin: "Whiteblack the Penguin sees the world",
+    author: "H.A. Rey and Margaret Rey",
+}
+
 ```
 
 2. Use console.log() to print the penguin's name to the console as part of a welcome message, like "Hello, I'm a penguin and my name is [NAME HERE]!"
 
 ```js
-// your code goes here
+console.log("Hello, I'm a Penguin and my name is " +  myPenguin.name);
 ```
 
 3. Write another line of code that adds a new property to your penguin called canFly and set it to false.
 
 ```js
-// your code goes here
+myPenguin.canFly = false;
 ```
 
 4. Add a method to your penguin called chirp that prints to the console: "CHIRP CHIRP! Is this what penguins sound like?"
 
 ```js
-// your code goes here
+myPenguin.chirp =  function() {
+    console.log("CHIP CHIRP! IS this what penguins sound like?");
+}
 ```
 
 6. Next, call your penguin's sayHello() method and make sure that it works!
 
 ```js
-// your code goes here
+
 ```
 
 7. Without modifying any of your previous code, change the penguin's name to "Penguin McPenguinFace" and then call your penguin's sayHello() function one more time to make sure it still works.
 
 ```js
-// your code goes here
+myPenguin.name = "Penguin McPenguinFace";
 ```
 
 8. Write another method called fly, and inside that method, use an if / else statement to print "I can fly!" to the console if your penguin's canFly property is true, or "No flying for me!" if its canFly property is false.
 
 ```js
-// your code goes here
+myPenguin.fly = function() {
+    if(myPenguin.canFly == true) {
+        console.log("I can fly!");
+    } else {
+        console.log("No flying for me!");
+    }
+}
+
 ```
 
 9. Call your penguin's fly() method and make sure it works!
 
 ```js
-// your code goes here
+myPenguin.fly();
 ```
 
 10. Change the canFly property to true -- again, without modifying any of your previous code!
 
 ```js
-// your code goes here
+myPenguin.canFly = true;
 ```
 
 11. Now call your penguin's fly() method again and make sure it works as expected!
 
 ```js
-// your code goes here
+myPenguin.fly();
 ```
 
 12. Write a for ... in loop to print each key to the console.
 
 ```js
-// your code goes here
+for(var i=0;i<myPenguin.length;i++) 
+{
+    console.log(myPenguin[i]);
+}
 ```
 
 13. Write another for ... in loop to print the value of each key to the console. (Hint: You'll need to use bracket notation to access the values this way, instead of dot notation!)
 
 ```js
-// your code goes here
+var i;
+for(i in myPenguin) {
+    console.log(myPenguin[i]);
+}
 ```
 
 ## Exercise 2
@@ -83,7 +103,18 @@
 ```
 
 ```js
-// your code goes here
+var recipe = {
+    title: "Mole",
+    servings: 2,
+    ingredients: ["cinnamon", "cumin", "cocoa"]
+}
+console.log(recipe.title);
+console.log("serves: " + recipe.servings);
+console.log("Ingrdients: ");
+for(var i=0;i<recipe.ingredients.length;i++)
+{
+    console.log(recipe.ingredients[i]);
+}
 ```
 
  15. Keep track of which books you read and which books you want to read!
@@ -93,5 +124,26 @@
  Now use an if/else statement to change the output depending on whether you read it yet or not. If you read it, log a string like 'You already read "The Hobbit" by J.R.R. Tolkien', and if not, log a string like 'You still need to read "The Lord of the Rings" by J.R.R. Tolkien.'
 
  ```js
-// your code goes here
+var books = [ {
+    title: "The Hobbit",
+    author: "J.R.R. Tolkien",
+    alreadyRead: false, 
+   }, {
+    title: "Harry Potter",
+    author: "J.K. Rowling",
+    alreadyRead: true,
+   }, {
+    title: "Inferno",
+    author: "Dan Brown",
+    alreadyRead: true,
+    } ]
+
+for(var i=0;i<books.length;i++) {
+    console.log(books[i].title + " by " + books[i].author);
+    if(books[i].alreadyRead==true) {
+        console.log("You already read " + books[i].title + " by " + books[i].author);
+    } else {
+        console.log("You still need to read the " + books[i].title + " by " + books[i].author);
+    }
+}
 ```
diff --git a/1. objects/2.js b/1. objects/2.js
index d5967e4..27bc946 100644
--- a/1. objects/2.js	
+++ b/1. objects/2.js	
@@ -21,3 +21,14 @@ var city = prompt("Enter the city name you visited las time.");
 // 9. Uisng console.log log the value of the key defined above.
 
 // 10. Can you define a key of `let or var` in any object? Reason.
+
+var user = {
+    "user name": "Black Panther",
+}
+console.log(user["user name"]);
+user[batch] = 10;
+alert(user[batch]);
+user[42] = "The answer to the meaning of life 🧸";
+console.log(user[42]);
+user[city] = true;
+console.log(user[city]);
\ No newline at end of file
diff --git a/2. array/1.md b/2. array/1.md
index 1a23aee..b6bab49 100644
--- a/2. array/1.md	
+++ b/2. array/1.md	
@@ -1,37 +1,37 @@
 1. Create an array named colors that contains five different names of colors as strings.
 
 ```js
-// your code goes here
+var array = ["red", "blue", "yellow", "green", "blue"];
 ```
 
 2. Access the first color in the array and print it to the console using console.log()
 
 ```js
-// your code goes here
+console.log(array[0]);
 ```
 
 3.Now do the same with the third color in the list. (Remember that array indexes start at 0, not at 1!)
 
 ```js
-// your code goes here
+console.log(array[2]);
 ```
 
 4.Write one line of code that changes the value of the last color in the list to "ultraviolet" (overwriting the previous value).
 
 ```js
-// your code goes here
+array[array.length-1] = "ulraviolet";
 ```
 
 5. Create a new variable called fourthColor and set it equal to the fourth color in the list.
 
 ```js
-// your code goes here
+var fourthColor = array[3];
 ```
 
 6.Add another color to the end of the list.
 
 ```js
-// your code goes here
+array.push("brown");
 ```
 
 7.Add another color to the beginning of the list.
@@ -43,29 +43,33 @@
 8. Print the length of the array to the console with console.log()
 
 ```js
-// your code goes here
+console.log(array.length);
 ```
 
 9.Remove the last color from the end of list, and then print the length of the array to the console one more time.
 
 ```js
-// your code goes here
+
 ```
 
 10.Write a for loop to iterate through every color in the array and print each color's value to the console.
 
 ```js
-// your code goes here
+for(var i=0;i<array.length;i++) {
+    console.log(array[i]);
+}
 ```
 
 11.Copying from that loop you just wrote, modify it to print every color's value and every color's index in this format: 3, purple or 0, blue etc.
 
 ```js
-// your code goes here
+for(var i=;i<array.length;i++) {
+    console.log(i + ", " + array[i]);
+}
 ```
 
 12.Create a variable named lastColor that will always point to the last element of the colors array, no matter how many colors are in the list. (Hint: make use of the array's length property for this!)
 
 ```js
-// your code goes here
+var lastColor = array[array.length-1];
 ```
\ No newline at end of file
diff --git a/3. copy-vs-reference/index.js b/3. copy-vs-reference/index.js
index 9a60408..793640e 100644
--- a/3. copy-vs-reference/index.js	
+++ b/3. copy-vs-reference/index.js	
@@ -4,7 +4,7 @@ var x = 10;
 var y = "abc";
 var a = x;
 var b = y;
-
+//x=10, y="abc", a=10, b="abc"
 // Value of x, y, a, b
 var x = 10;
 var y = "abc";
@@ -12,27 +12,28 @@ var a = x;
 var b = y;
 a = 5;
 b = "def";
-
+// x=10, y="abc", a=5, b="def"
 // Value of arr & arrCopy
 var arr = [1];
 var arrCopy = arr;
 arr.push(2);
-
+//arr=[1,2], arrCopy=[1] 
 // Value of obj
 var obj = { name: "ryan" };
 obj = { surname: "florance" };
-
+// surname: "florance"
 // What's the output.
 var arr = ["Hi"];
 var arr2 = arr;
 console.log(arr === arr2);
-
+//true
 // What's the output.
 var arr1 = ["Hi!"];
 var arr2 = ["Hi!"];
 console.log(arr1 === arr2);
 console.log(arr == arr2);
-
+//false
+//false
 //What's the output
 console.log([10] === [10]);
 
diff --git a/4. array-and-objects/01/main.js b/4. array-and-objects/01/main.js
index e69de29..00f146e 100644
--- a/4. array-and-objects/01/main.js	
+++ b/4. array-and-objects/01/main.js	
@@ -0,0 +1,15 @@
+var myPenguin ={
+    name: "Whiteblack",
+    origin: "Whiteblack the Penguin sees the world",
+    author: "H.A. Rey and Margaret Rey",
+    favoriteFoods: ["eggs","apples","oranges"],
+}
+console.log(myPenguin.favoriteFoods[1]);
+var firstFavFood = myPenguin.favoriteFoods[0];
+myPenguin.favoriteFoods.push("chocolate");
+console.log(myPenguin.favoriteFoods.length);
+myPenguin.favoriteFoods[myPenguin.favoriteFoods.length-1] = "pineapples";
+var lastFavFood = myPenguin.favoriteFoods[myPenguin.favoriteFoods.length-1];
+for(var i=0;i<myPenguin.favoriteFoods.length;i++) {
+    console.log(myPenguin.favoriteFoods[i]);
+}
\ No newline at end of file
diff --git a/4. array-and-objects/02/main.js b/4. array-and-objects/02/main.js
index e69de29..f19b00c 100644
--- a/4. array-and-objects/02/main.js	
+++ b/4. array-and-objects/02/main.js	
@@ -0,0 +1,54 @@
+var gunter = {
+    name: "Gunter",
+    origin: "Adventure Time",
+    canFly: false,
+    sayHello: function () {
+      console.log("QUACK!!!");
+    }
+  };
+  
+  var ramon = {
+    name: "Ramón",
+    origin: "Happy Feet",
+    canFly: true,
+    sayHello: function () {
+      console.log("Estoy encantado de conocerle.");
+    }
+  };
+  
+  var fred = {
+    name: "Fred",
+    origin: "Sitting Ducks",
+    canFly: false,
+    sayHello: function () {
+      console.log("Hi there!");
+    }
+  };
+
+var penguins = [gunter, ramon, fred];
+
+console.log(penguins[0]);
+var secondPenguin = penguins[1];
+console.log(penguins[penguins.length-1].name);
+penguins.push(myPenguin ={
+  name: "Whiteblack",
+  origin: "Whiteblack the Penguin sees the world",
+  author: "H.A. Rey and Margaret Rey",
+});
+console.log(penguins.length);
+penguins[0].canFly = true;
+penguins[0].sayHello();
+for(var i = 0;i<penguins.length;i++) {
+  console.log(penguins[i].name);
+}
+for(var i = 0;i<penguins.length;i++) {
+  penguins[i].sayHello();
+}
+for(var i = 0;i<penguins.length;i++) {
+  penguins[i].numberOfFeet = 2;
+}
+for(var i = 0;i<penguins.length;i++) {
+  if(penguins[i].canFly == true) {
+    console.log(penguins[i].name + " can fly!");
+  }
+}
diff --git a/4. array-and-objects/03/main.js b/4. array-and-objects/03/main.js
index e69de29..dc68c36 100644
--- a/4. array-and-objects/03/main.js	
+++ b/4. array-and-objects/03/main.js	
@@ -0,0 +1,24 @@
+var gunter = {
+    name: "Gunter",
+    origin: "Adventure Time",
+    canFly: false,
+    sayHello: function () {
+      console.log("QUACK!!!");
+    }
+  };
+  
+  gunter.outfit = {
+      hat: "baseball cap",
+      shirt: "HAwaiian shirt",
+      pants: "cargo shorts",
+      shoes: "flip-flops" 
+  }
+   var penguinHatType = gunter.outfit.hat;
+   console.log(penguinHatType);
+   gunter.outfit.accessory = "Pocket watch";
+   gunter.outfit.hat = "top hat";
+   delete gunter.outfit.pants;
+   var i;
+   for(i in gunter) {
+       console.log(gunter.outfit[i]);
+   }
\ No newline at end of file

From 65e9e44f42c0c2b50321da27dc5840469faefde3 Mon Sep 17 00:00:00 2001
From: Rishabh <mailrishabh.ra@gmail.com>
Date: Tue, 25 Feb 2020 09:38:34 +0530
Subject: [PATCH 2/3] final commit

---
 3. copy-vs-reference/index.js   | 38 +++++++++++++++++++--------------
 4. array-and-objects/03/main.js |  4 +++-
 2 files changed, 25 insertions(+), 17 deletions(-)

diff --git a/3. copy-vs-reference/index.js b/3. copy-vs-reference/index.js
index 793640e..63f166e 100644
--- a/3. copy-vs-reference/index.js	
+++ b/3. copy-vs-reference/index.js	
@@ -36,7 +36,7 @@ console.log(arr == arr2);
 //false
 //What's the output
 console.log([10] === [10]);
-
+// false
 // What's the output?
 
 function personDetails(person) {
@@ -53,8 +53,8 @@ var personObj1 = {
   age: 30
 };
 var personObj2 = personDetails(personObj1);
-console.log(personObj1); // -> ?
-console.log(personObj2); // -> ?
+console.log(personObj1); // -> name:Alex Age: 25
+console.log(personObj2); // -> ?name: John Age: 30
 
 // Guess the output
 var oldArray = [];
@@ -62,6 +62,7 @@ var object = {};
 object.newArray = oldArray;
 oldArray.push(10);
 console.log(object.newArray === oldArray);
+//true
 
 // Guess the output
 var a = 5;
@@ -69,13 +70,16 @@ var b = a;
 a = 10;
 console.log(a);
 console.log(b);
-
+//10
+//5
 // What's the output?
 var a = {};
 var b = a;
 a.a = 1;
 console.log(a);
 console.log(b);
+//1
+//1
 
 // What's the output.
 var a = [];
@@ -84,6 +88,7 @@ a.push(1);
 console.log(a); // [1]
 console.log(b); // [1]
 console.log(a === b);
+//true
 
 // Clone the object person in clone
 var person = {
@@ -96,6 +101,7 @@ var person = {
 };
 
 var clone = {};
+clone = {...person};
 
 // Output of the following
 let brothers = ["John", "Bran", "Robb"];
@@ -118,15 +124,15 @@ let user3 = {
   brothers: ["John", "Bran", "Robb"]
 };
 // Output of the below code and why?
-user.house === user2.house; // output:
-user.house == user2.house; // output:
-user.brothers === user2.brothers; // output:
-user.brothers == user2.brothers; // output:
-user.name == user2.name; // output:
-user.name === user2.name; // output:
-user.brothers == user3.brothers; // output:
-user.brothers === user3.brothers; // output:
-user.house === user2.house; // output
-user.house === user3.house; // output
-user.brothers[0] === user2.brothers[0]; // output
-user.brothers[0] === user3.brothers[0]; // output
+user.house === user2.house; // output: true
+user.house == user2.house; // output: true
+user.brothers === user2.brothers; // output: true
+user.brothers == user2.brothers; // output: true
+user.name == user2.name; // output: true
+user.name === user2.name; // output: true
+user.brothers == user3.brothers; // output: false
+user.brothers === user3.brothers; // output: false
+user.house === user2.house; // output:  true
+user.house === user3.house; // output: true
+user.brothers[0] === user2.brothers[0]; // output: true
+user.brothers[0] === user3.brothers[0]; // output: true
diff --git a/4. array-and-objects/03/main.js b/4. array-and-objects/03/main.js
index dc68c36..2c00a57 100644
--- a/4. array-and-objects/03/main.js	
+++ b/4. array-and-objects/03/main.js	
@@ -21,4 +21,6 @@ var gunter = {
    var i;
    for(i in gunter) {
        console.log(gunter.outfit[i]);
-   }
\ No newline at end of file
+   }
+
+   
\ No newline at end of file

From d96fbdef735df9c1f9927bcd418f7c1cd134cc78 Mon Sep 17 00:00:00 2001
From: Rishabh <mailrishabh.ra@gmail.com>
Date: Wed, 18 Mar 2020 10:14:09 +0530
Subject: [PATCH 3/3] final commit

---
 1. objects/1.md | 1 +
 2. array/1.md   | 4 +++-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/1. objects/1.md b/1. objects/1.md
index 3bcd294..5192476 100644
--- a/1. objects/1.md	
+++ b/1. objects/1.md	
@@ -33,6 +33,7 @@ myPenguin.chirp =  function() {
 
 ```js
 
+
 ```
 
 7. Without modifying any of your previous code, change the penguin's name to "Penguin McPenguinFace" and then call your penguin's sayHello() function one more time to make sure it still works.
diff --git a/2. array/1.md b/2. array/1.md
index b6bab49..e6ec3a5 100644
--- a/2. array/1.md	
+++ b/2. array/1.md	
@@ -31,13 +31,14 @@ var fourthColor = array[3];
 6.Add another color to the end of the list.
 
 ```js
-array.push("brown");
+array.push("purple");
 ```
 
 7.Add another color to the beginning of the list.
 
 ```js
 // your code goes here
+array.unshift("cyan");
 ```
 
 8. Print the length of the array to the console with console.log()
@@ -49,6 +50,7 @@ console.log(array.length);
 9.Remove the last color from the end of list, and then print the length of the array to the console one more time.
 
 ```js
+array.pop();
 
 ```