AmitDiwan has Published 10744 Articles

Finding the height based on width and screen size ratio (width:height) in JavaScript

AmitDiwan

AmitDiwan

Updated on 20-Apr-2021 07:41:14

660 Views

ProblemWe are required to write a JavaScript function that takes in the width of the screen as the first argument and the aspect ratio (w:h) as the second argument. Based on these two inputs our function should return the height of the screen.ExampleFollowing is the code − Live Democonst ratio = ... Read More

Constructing full name from first name, last name and optional middle name in JavaScript

AmitDiwan

AmitDiwan

Updated on 20-Apr-2021 07:39:03

3K+ Views

ProblemWe are required to write a JavaScript function that takes in three strings, first string specifies the first name, second string specifies the last name and the third optional string specifies the middle name.Our function should return the full name based on these inputs.ExampleFollowing is the code − Live Democonst firstName ... Read More

Create palindrome by changing each character to neighboring character in JavaScript

AmitDiwan

AmitDiwan

Updated on 20-Apr-2021 07:36:53

451 Views

ProblemWe are required to write a JavaScript function that takes in a string. Our function can do the following operations on the string −each character MUST be changed either to the one before or the one after in the alphabet."a" can only be changed to "b" and "z" to "y".Our ... Read More

Finding value of a sequence for numbers in JavaScript

AmitDiwan

AmitDiwan

Updated on 20-Apr-2021 07:33:42

569 Views

ProblemConsider the following sequence sum −$$seq(n, \:p)=\displaystyle\sum\limits_{k=0} \square(-1)^{k}\times\:p\:\times 4^{n-k}\:\times(\frac{2n-k}{k})$$We are required to write a JavaScript function that takes in the numbers n and p returns the value of seq(n, p).ExampleFollowing is the code − Live Democonst n = 12; const p = 70; const findSeqSum = (n, p) => {   ... Read More

Finding top three most occurring words in a string of text in JavaScript

AmitDiwan

AmitDiwan

Updated on 20-Apr-2021 07:30:15

486 Views

ProblemWe are required to write a JavaScript function that takes in a English alphabet string. Our function should return the top three most frequent words present in the string.ExampleFollowing is the code − Live Democonst str = 'Python was developed by Guido van Rossum in the late eighties and early nineties ... Read More

Removing n characters from a string in alphabetical order in JavaScript

AmitDiwan

AmitDiwan

Updated on 20-Apr-2021 07:26:45

291 Views

ProblemWe are required to write a JavaScript function that takes in a lowercase alphabet string and number num.Our function should remove num characters from the array in alphabetical order. It means we should first remove ‘a’ if they exist then ‘b’ , ‘c’ and so on until we hit the ... Read More

Finding two prime numbers with a specific number gap in JavaScript

AmitDiwan

AmitDiwan

Updated on 20-Apr-2021 07:25:13

225 Views

ProblemWe are required to write a JavaScript function that takes in a number, gap as the first argument and a range array of two numbers as the second argument. Our function should return an array of all such prime pairs that have an absolute difference of gap and falls between ... Read More

Finding two missing numbers that appears only once and twice respectively in JavaScript

AmitDiwan

AmitDiwan

Updated on 20-Apr-2021 07:22:59

169 Views

ProblemWe are required to write a JavaScript function that takes in an array in which all the numbers appear thrice except one which appears twice and one which appears only one. Our function should find and return these two numbers.ExampleFollowing is the code − Live Democonst arr = [1, 1, 1, ... Read More

Creating a Projectile class to calculate height horizontal distance and landing in JavaScript

AmitDiwan

AmitDiwan

Updated on 20-Apr-2021 07:18:23

157 Views

ProblemWe are required to write a JavaScript class, Projectile, which takes in 3 arguments when initialized −starting height (0 ≤ h0 < 200)starting velocity (0 < v0 < 200)angle of the projectile when it is released (0° < a < 90°, measured in degrees).We need to write the following method ... Read More

Cutting off number at each digit to construct an array in JavaScript

AmitDiwan

AmitDiwan

Updated on 20-Apr-2021 07:06:13

110 Views

ProblemWe are required to write a JavaScript function that takes in a number. Our function should return an array of strings containing the number cut off at each digit.ExampleFollowing is the code − Live Democonst num = 246; const cutOffEach = (num = 1) => {    const str = String(num); ... Read More

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