From 39daa5899800d21542cfa57e4b7b445708a5a74d Mon Sep 17 00:00:00 2001
From: Prasanna <gramopadhye37@gmail.com>
Date: Wed, 7 Dec 2022 13:07:30 +0530
Subject: [PATCH 1/2] Added Practicce files

---
 javascript/02/closures.js    |  2 +-
 javascript/02/practice.js    | 30 ++++++++++++++++++++++++++++++
 javascript/02/spread-rest.js | 19 +++++++++++++++++++
 3 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 javascript/02/practice.js
 create mode 100644 javascript/02/spread-rest.js

diff --git a/javascript/02/closures.js b/javascript/02/closures.js
index dacb842..b2701ef 100644
--- a/javascript/02/closures.js
+++ b/javascript/02/closures.js
@@ -16,7 +16,7 @@ console.log(c1(), c1(), c1())
 console.log(c2(), c2(), c2())
 console.log(c1(), c1(), c1())
 
-
+// Shadowing of variables
 function a () {
   let x = 10
   let p = 1
diff --git a/javascript/02/practice.js b/javascript/02/practice.js
new file mode 100644
index 0000000..fc84deb
--- /dev/null
+++ b/javascript/02/practice.js
@@ -0,0 +1,30 @@
+// If the object binded to the function is changed inside the function, then does it also chenge in main code. ans: Yes 
+
+console.log(this) // blank object
+
+function fun1() {
+    this.a = "lavde"
+    console.log(this) // globalThis
+}
+
+let obj2 = {
+    a: "hell",
+    b:10,
+    c: true,
+    d: fun1
+}
+
+obj2.d()
+
+let obj = {
+    a: "hello",
+    b: 10,
+    c: true
+}
+
+// let f = fun1.bind(obj);
+// f();
+// fun1.call(obj)
+fun1.apply(obj)
+
+console.log(obj, "Original Object")
\ No newline at end of file
diff --git a/javascript/02/spread-rest.js b/javascript/02/spread-rest.js
new file mode 100644
index 0000000..a0aec1f
--- /dev/null
+++ b/javascript/02/spread-rest.js
@@ -0,0 +1,19 @@
+//  Spread operator - Converts array to individual values
+function sumOne(a, b) {
+    return a+b
+}
+
+arr = [5, 4]
+console.log(sumOne(...arr))
+
+// Rest operator - Converts individual values to array
+function calSum(a, b, ...args) {
+    let multi = a*b
+    let sum = 0
+    for (const arg of args) {
+        sum += arg
+    }
+    return [multi, sum]
+}
+
+console.log(calSum(3, 7, 34, 2))
\ No newline at end of file

From 126577f854acde71dd837b08603890602a4a7ac7 Mon Sep 17 00:00:00 2001
From: Prasanna gramopadhye <69106022+gramo37@users.noreply.github.com>
Date: Wed, 21 Dec 2022 12:49:56 +0530
Subject: [PATCH 2/2] Promise Sort Assignment Solution

Create a file sorted.txt will all the numbers from 1.txt, 2.txt and 3.txt
---
 javascript/04/async-assignment/multisort.js | 32 +++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/javascript/04/async-assignment/multisort.js b/javascript/04/async-assignment/multisort.js
index c2eade5..97f6ad9 100644
--- a/javascript/04/async-assignment/multisort.js
+++ b/javascript/04/async-assignment/multisort.js
@@ -11,3 +11,35 @@ const fs = require('fs')
  * 
  * NOTE: You can NOT use readFileSync or writeFileSync 
  */
+
+const fileNames = ['/1.txt', '/2.txt', '/3.txt']
+const arrOfPromises = []
+
+function mergeAllIntoOne(arrs) {
+    let ans = [];
+    arrs.forEach(element => {
+        ans = [...ans, ...element]
+    });
+    ans.sort((a, b) => a - b);
+    return (ans);
+}
+
+fileNames.forEach(filename => {
+    let promise = new Promise((resolve, reject) => {
+        fs.readFile(__dirname + filename, function (err, data) {
+            if (err) throw err;
+            let array = data.toString().split("\n");
+            var numberArray = array.map(Number);
+            numberArray.sort((a, b) => a - b)
+            resolve(numberArray);
+        })
+    })
+    arrOfPromises.push(promise);
+})
+
+Promise.all(arrOfPromises).then((arrs) => {
+    var file = fs.createWriteStream(__dirname + '/sorted.txt');
+    file.on('error', function (err) { throw err });
+    mergeAllIntoOne(arrs).forEach(function (v) { file.write(v + '\n'); });
+    file.end();
+})