added polyfill and timecomplexity in curriculum · alokofficial/DSA-in-JavaScript@52bbab6 · GitHub

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Vishal-raj-1

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added polyfill and timecomplexity in curriculum

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+26-10Lines changed: 26 additions & 10 deletions

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  • Polyfill.md
• README.md

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‎Array/Polyfill.md‎

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+23-9Lines changed: 23 additions & 9 deletions

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Original file line number	Diff line number	Diff line change
@@ -6,9 +6,7 @@
6	6	</a>
7	7	</p>
8	8
9		- Sure, here's the complete text converted into Markdown:
10		-
11		- ## Map in JavaScript
	9	+ ### Map in JavaScript
12	10
13	11	```javascript
14	12	const employees = [
@@ -18,8 +16,12 @@ const employees = [
18	16	];
19	17
20	18	const employeesName = employees.map(employee => employee.name);
	19	+ console.log(myEmployeesName); // ["John", "Sarah", "Michael"]
	20	+ ```
	21	+
	22	+ ### Polyfill of map()
21	23
22		- // Polyfill of map()
	24	+ ```javascript
23	25	if (!Array.prototype.myMap) {
24	26	Array.prototype.myMap = function (callback) {
25	27	const result = [];
@@ -35,7 +37,7 @@ const myEmployeesName = employees.myMap(employee => employee.name);
35	37	console.log(myEmployeesName); // ["John", "Sarah", "Michael"]
36	38	```
37	39
38		- ## Filter In JavaScript
	40	+ ### Filter In JavaScript
39	41
40	42	```javascript
41	43	const products = [
@@ -45,8 +47,15 @@ const products = [
45	47	];
46	48
47	49	const availableProducts = products.filter(product => product.inStock);
	50	+ // [
	51	+ // { name: 'iPhone', price: 999, inStock: true },
	52	+ // { name: 'Google Pixel', price: 799, inStock: true },
	53	+ // ]
	54	+ ```
48	55
49		- // Polyfill of filter()
	56	+ ### Polyfill of filter()
	57	+
	58	+ ```javascript
50	59	if (!Array.prototype.myFilter) {
51	60	Array.prototype.myFilter = (callback) => {
52	61	const result = [];
@@ -68,7 +77,7 @@ console.log(availableProducts);
68	77	// ]
69	78	```
70	79
71		- ## Reduce in JavaScript
	80	+ ### Reduce in JavaScript
72	81
73	82	```javascript
74	83	const orders = [
@@ -81,7 +90,12 @@ const totalAmount = orders.reduce(function (accumulator, order) {
81	90	return accumulator + order.price * order.quantity;
82	91	}, 0);
83	92
84		- // Polyfill of reduce()
	93	+ console.log(totalAmount); // 5294
	94	+ ```
	95	+
	96	+ ### Polyfill of reduce()
	97	+
	98	+ ```javascript
85	99	if (!Array.prototype.myFilter) {
86	100	Array.prototype.myReduce = (callback, initialValue) => {
87	101	let accumulator = initialValue === undefined ? this[0] : initialValue;
@@ -96,7 +110,7 @@ const myTotalAmount = orders.myReduce(function (accumulator, order) {
96	110	return accumulator + order.price * order.quantity;
97	111	}, 0);
98	112
99		- console.log(totalAmount);
	113	+ console.log(totalAmount); // 5294
100	114	```
101	115
102	116	### Question 1: Find the longest word length

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‎README.md‎

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Original file line number	Diff line number	Diff line change
@@ -23,4 +23,6 @@
23	23	## Curriculum
24	24
25	25	- [Loops in JavaScript](https://github.com/Vishal-raj-1/DSA-In-JS-With-Vishal/blob/main/Basics/README.md)
26		- - [Array](https://github.com/Vishal-raj-1/DSA-In-JS-With-Vishal/blob/main/Array/README.md)
	26	+ - [Time Complexity: Big O notation](https://github.com/Vishal-raj-1/DSA-In-JS-With-Vishal/blob/main/Time%20Complexity/README.md)
	27	+ - [Array](https://github.com/Vishal-raj-1/DSA-In-JS-With-Vishal/blob/main/Array/README.md)
	28	+ - [Polyfill of Map, Filter & Reduce](https://github.com/Vishal-raj-1/DSA-In-JS-With-Vishal/blob/main/Array/Polyfill.md)

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