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Commit c1cc796

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[Veer] Added : Practice Problems on JavaScript
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9 files changed

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‎ArrowFunctions.js‎

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‎MApReduceFilter/NeedToStudy‎

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Default Parameters in ES6.
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Template Literals in ES6.
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Multi-line Strings in ES6.
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Destructuring Assignment in ES6.
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Enhanced Object Literals in ES6.
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Arrow Functions in ES6.
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Promises in ES6.
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Block-Scoped Constructs Let and Const.

‎MApReduceFilter/mapreducefilter.js‎

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// let students = [
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// {name : "Veer", age : 22},
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// {name : "Priya", age : 21}
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// ]
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// let personsBelow21 = students.filter((ages) => ages.age <= 21)
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// console.log(personsBelow21)
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// let marks = [99,95,85,90,68,87];
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// let compressTo50 = marks.filter((a) => a>88)
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// .map((a) => a+2)
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// console.log(compressTo50)
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///////////////////////////////////////////////////////////////////////
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// let findTotal = marks.reduce((a,b) => a+b)
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// console.log(findTotal)
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// function sum ()
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// let findSum = marks.reduce()
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// let totalMarksInOrder = marks.slice(0)
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// .sort()
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// console.log(totalMarksInOrder)
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//Object Array
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const objects = [{ x: 1 }, { x: 2 }, { x: 3 }];
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const sum2 = objects.reduce(
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(acc, curr) => acc + curr,
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);
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console.log(sum2)
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//array.reduce(function(total, currentValue, currentIndex, arr), initialValue)

‎calculation.js‎

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const prompt = require("prompt-sync")();
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class calculator{
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addition = (a,b) => a+b
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subtraction = (a,b) => a-b;
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multiply = (a,b) => a*b;
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division = (a,b) => a/b;
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}
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let calc = new calculator()
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console.log(calc.addition(10,20))
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console.log(calc.subtraction(10,5))
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console.log(calc.multiply(10,5))
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‎classJS.js‎

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/**
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* Can you create Employee Payroll Data
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with id, name and
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salary
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Create all methods and functions also
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getter setter and constructor should also be there
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*/
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class Employee{
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id;
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name;
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salary;
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constructor (id,name,salary){
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this.id = id
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this.name = name
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this.salary = salary
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}
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set setId( id){
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id = this.id
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}
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get getId(){
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return this.id
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}
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set setName(name){
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name = this.name
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}
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get getName(){
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return this.name
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}
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set setSalary(salary){
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salary = this.salary
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}
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get getSalary(){
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return this.salary
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}
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}
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let worker1 = new Employee(1,"Veer",10000)
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let worker2 = new Employee(2,"Priya",15000)
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console.log(worker1)
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console.log(worker2)
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worker1.setName = "Viru"
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console.log(worker1)
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‎jsarrays‎

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var array = [1,2,3,4,5]
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var starray = ["veer","priya","hitesh","swayam","mehul"]
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console.log(array.length)
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console.log(starray.length)
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const array3 = [2,4,5,6,7,8]
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console.log(array3.length)
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console.log(array.reverse())
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function sorting(a,b){
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return b-a;
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}
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console.log(array.sort(sorting)) // Sorting
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let ar1 = [1,3,5,7,9]
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let ar2 = [2,4,6,8,0]
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console.log(ar1.join("-"));
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console.log(ar1.concat(ar2)) //Contactinating 2 integer arrays
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let starr2 = ["Sushmitha","Abhishek","Amol"]
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console.log(starray.concat(starr2)) //Concating 2 strings arrays
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console.log(ar1.concat(starr2)) //Concating int with string arrays
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let res1 = starray.concat(starr2);
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let res2 = (ar1.concat(ar2));
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console.log(typeof(res1))
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console.log(typeof(res2))
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let rse3 = ar1.join("-")
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console.log(typeof(rse3))
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let arrn1 = [11,12,13,14,15,16,17,18,19,20]
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//arr.splice(start, deleteCount, item1, ..., itemN)
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console.log(arrn1.slice(5,9));
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console.log(arrn1.splice(5,10))

‎jspractice.js‎

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let students = ["Veer","Priya","Hitesh","Prakash"]
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//Stack Opearations
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students.push("Sushmitha","Amol","Mehul")
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students.pop()
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console.log(students)
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//forEach
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students.forEach(scaning)
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function scaning(students){
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}
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let leftpeople = ["Shreyas","Dipali"]
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let rfp175 = students.concat(leftpeople)
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console.log(rfp175)
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let newBAtch = rfp175.slice(0)
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console.log(newBAtch)
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let oldfriends = ["Siva","Anusha"]
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let otherbatch = students.concat(oldfriends)
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console.log(otherbatch)
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let checkstudents = otherbatch.join("-")
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console.log(checkstudents)
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let students1 = otherbatch.splice(2,1,"Himanshu")
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console.log(otherbatch)
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console.table(otherbatch)

‎mapDataStructure.js‎

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/**
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* 'a', 1
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'b',22
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'c',32
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'd',65
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const map1 = new Map();
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create map DataStructure
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*/
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const map1 = new Map();
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map1.set('a',1)
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map1.set('b',22)
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map1.set('c',32)
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map1.set('d',65)
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let value = map1.get('d')
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console.log(value)
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map1.set('a',14)
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console.log(map1)
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console.log("size is :",map1.size)
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// map1.delete('a')
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// map1.delete('b')
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// map1.delete('c')
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// console.log("Deleted 3 values",map1)
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// map1.forEach(element => {
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// console.log(element)
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// element = element+1
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// });
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for(let element of map1.values()){
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element = element+1
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console.log(element)
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}
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console.table(map1)

‎methodspractice.js‎

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let a,b,result
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function addition (a,b){
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return a+b
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}
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result = addition(5,9)
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console.log(result);
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function multiplication(a,b){
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return a*b
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}
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result = multiplication(2,6)
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console.log(result);
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a=10
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var a1
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console.log(a1);
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b1 =15
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let b1
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console.log(b1)
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