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In this video, we will write a Javascript program to Check whether a Number is a Power of 2 or not. Basically, a power of two is a number of form 2n &nbsp;where n is an integer. Examples: =&gt; Input: n = 37 =&gt; Output: No=&gt; Input: n = 16 =&gt; Output: Yes=&gt; Input:n = 12 =&gt; Output: n= NoIn the video to check whether a number is a power of 2 we use three different methods: 1. Using ceil and floor function: In this method, we use math ceil and floor functions. If the ceil and floor value of the input number is equal then the input number is the power of 2. Or we can say that If log2(n) is an integer then n is a power of 2, else not. 2. Using division operator: In this method, we keep dividing the input number by 2 iteratively and check whether n % 2 is not equal to zero and n is not equal to 1, which indicates n is not the power of 2 otherwise if n becomes 1 then it is the power of 2.3. By checking the count of the set bits: All power of two numbers has only a one-bit set. So count the number of set bits, and if you get 1 then the number is a power of two. For example in binary: 2 = 10 4 = 100 8 = 1000So the time and space complexity of all the methods are as follows: 1. Using ceil and floor function Time Complexity: O(1) Space Complexity:(1) 2. Using division operator Time Complexity: O(log2n) Auxiliary Space: O(1) 3. By checking the count of set bits Time complexity: O(N) Auxiliary Space: O(1)Javascript program to Check whether a Number is a Power of 2 or not : <a href="https://www.geeksforgeeks.org/javascript-program-to-check-whether-a-given-number-is-power-of-2/">https://www.geeksforgeeks.org/javascript-program-to-check-whether-a-given-number-is-power-of-2/</a>

Javascript program to find whether a number is power of two

In this video, we will see write a Javascript program to Check if a Given Number is an Ugly Number or not.&nbsp;What are Ugly numbers? The ugly numbers are numbers whose only prime factors are 2, 3, or 5. The first 11 ugly numbers are 1,2,3,4,5,6,8,9,10,12,15.For Examples:Input: Number = 14&nbsp; Output: No&nbsp; Explanation: &nbsp;14 is not ugly since it includes another prime factor 7.Input: Number = 6&nbsp; Output: Yes&nbsp; Explanation: 6 is ugly since it includes 2 and 3Algorithm: Step 1: First we iterate for all positive integers till the ugly number count is smaller than n. Step 2:If an integer is ugly then increment the ugly number count. Step 3: To check if a number is ugly, divide the number by the greatest divisible powers of 2, 3, and 5. Step 4: if the number becomes 1 then it is an ugly number otherwise not.<h2 style="text-align:justify;">Approaches to check if a number is Ugly or not</h2>1. Using Loop 2. Using recursion&nbsp;

Javascript program to check if a given number is Ugly Number or not

In this video, we will write a JavaScript program to find the Euclidean distance between two points.&nbsp; So basically here, in given two coordinates( x1, y1) and( x2, y2) of a two-dimensional graph and we need to find the distance between them.&nbsp; In mathematics, the Euclidean distance between two points in Euclidean space is the length of a line partition between the two points. It can be calculated from the Cartesian coordinates of the points using the Pythagorean theorem, hence sometimes being called the Pythagorean distance.&nbsp; Examples&nbsp; Input:&nbsp; x1, y1 = ( 3, 4)&nbsp; x2, y2 = ( 5, 3)&nbsp; Output = 2.236067977&nbsp; Input:&nbsp; x1, y1 = ( 3, 4)&nbsp; x2, y2 = ( 8, 9)&nbsp; Output = 7.0710678118654&nbsp; Time Complexity O( log n)&nbsp; Auxiliary Space O(1)&nbsp; Algorithm&nbsp; Step1 First, take the input of coordinates of the two points.&nbsp; Step 2 Apply the formula for calculating Euclidean distance. That's&nbsp; Euclidean Distance = sqrt(( x2- x1) 2( y2- y1) 2)&nbsp; Step 3 Print the result

Javascript program to find the Euclidean distance between two points

In this video, we will write a Javascript program to calculate Mth Element after K Left Rotations.&nbsp; So here we need to find the Mth element of the array after K left rotation in any given non-negative integers K, M, and an array arr[] with N elements.&nbsp; Example: Input: arr[] = {32, 42, 53, 23}, K = 2, M = 1&nbsp; Output: 53&nbsp; Explanation:&nbsp; The array after first left rotation a1[ ] = {42, 53, 23, 32}&nbsp; The array after second left rotation a2[ ] = {53, 23, 32, 42}&nbsp; 1st element after 2 left rotations is 53.&nbsp;Approach used:Simple Method : Step 1: Take array elements from a user and perform the left rotation K times.&nbsp; Step 2: Finding the Mth elements of the final array after rotations.&nbsp;Using formula (K+M-1)%N: In this method, we use the formula and find Mth elements.&nbsp;Simple Method: The Time complexity O(1) and Auxiliary Space O(1)Calculate Mth Element after K Left Rotations&nbsp; <a href="https://www.geeksforgeeks.org/find-the-mth-element-of-the-array-after-k-left-rotations/">https://www.geeksforgeeks.org/find-the-mth-element-of-the-array-after-k-left-rotations/</a>

Javascript program to calculate Mth Element after K Left Rotations

In this video, we will write a JavaScript program to generate random alphabets.<h2 style="text-align:justify;">Generating random alphabets in Javascript</h2>Algorithm:<ol><li style="text-align:justify;">Step 1: First we create a function, and initialize two character arrays, one containing all the alphabets and the other of the given size n to store the result.</li><li style="text-align:justify;">Step 2: Then we initialize the seed to the current system time so that every time a new random seed is generated.</li><li style="text-align:justify;">Step 3: Next, we use for loop in which we generate a random number to use as an index for the array and then concatenate that randomly chosen alphabet to the empty string.</li><li style="text-align:justify;">Step 4: Print the random alphabet.</li></ol>Here we use 2 Javascript libraries to generate random alphabets:<ol><li style="text-align:justify;">Math.random(): The Math.random() function is used to return a floating-point pseudo-random number between ranges. This random number can be scaled according to the desired range.</li><li style="text-align:justify;">Math. floor(): The Math.floor() method is used to round off the number passed as a parameter to its nearest integer in a Downward direction of rounding i.e. towards the lesser value.</li></ol>

Javascript program to generate random alphabets

In this video, we write a JavaScript program to convert the first letter of a string into uppercase.<h2>Program to convert first letter of a string into Uppercase (3 Approaches)</h2>1. toUpperCase() 2. slice() 3. replace() Example: Input string : geeksforgeeks Output string : Geeksforgeeks Input string: javascript Output string: Javascript 1) toUpperCase():In this method we use toUppercase(). Basically, this function applies to a string and changes all letters to uppercase. Syntax: string.toUpperCase() &nbsp;2) slice(): This function applies to a string and slices it according to the passed parameter. Syntax: string.slice(start, end &nbsp;3) replace(): This is a built-in function in JavaScript that is used to replace a slice of a string with another string or a regular expression. The original string will not be affected. Syntax: str.replace(A, B)JavaScript program to convert the first letter of a string into uppercase <a href="https://www.geeksforgeeks.org/how-to-make-first-letter-of-a-string-uppercase-in-javascript/">https://www.geeksforgeeks.org/how-to-make-first-letter-of-a-string-uppercase-in-javascript/</a>

JavaScript Program to Convert the First Letter of a String into UpperCase

In this video, we will write a Javascript program to calculate bonus and gross using basic salary.&nbsp; A bonus is a financial compensation that is above and beyond the normal payment expectations of its recipient.&nbsp; Gross salary is the monthly or yearly salary of an individual before any deductions are made from it.&nbsp; Formula:&nbsp; Bonus = (Basic salary * bonus percentage)/100&nbsp; Gross salary = (Basic salary + Bonus)&nbsp; Examples:&nbsp; Input: Basic salary: 25000,&nbsp; Bonus percentage: 15%&nbsp; Output:&nbsp; Bonus: 3750&nbsp; Gross Salary: 28750&nbsp; Here we assign a value to the basic salary variable and then compute the bonus amount (bonus will be calculated at 15% of basic salary) and gross salary using the given basic salary using the above-mentioned formula.&nbsp;

Javascript program to calculate and print bonus and gross using basic salary

In this video, we will write a JavaScript Program to Convert a Date into a Number. Here we see 2 Java script methods for converting date into numbers. Method - 1 Date.getTime( ): In first method we use Javascript Date.getTime() function. When the getTime() method is called on this date object it will return the number of milliseconds. The getTime() always uses UTC to represent a time. Method - 2 Date.parse( ): The Date.parse() method parses a string representation of a date and returns the number of milliseconds since January 1, 1970, 00:00:00 UTC or NaN if the string is unrecognized or, in some cases, contains illegal date values (e.g. 2022-07-31). Algorithm: Step 1: Create an object. Step 2: Use Date.parse() or Date.getTime() Step 3: Display outputJavascript date format programs:<a href="https://www.geeksforgeeks.org/javascript-date-formats/">https://www.geeksforgeeks.org/javascript-date-formats/</a> <a href="https://www.geeksforgeeks.org/javascript-date/">https://www.geeksforgeeks.org/javascript-date/</a> <a href="https://www.geeksforgeeks.org/javascript-get-date-methods/">https://www.geeksforgeeks.org/javascript-get-date-methods/</a>

Javascript program to convert Date to Number

In this video, we will write a Javascript program to find the area &amp; perimeter of triangles.Area of a Triangle: The area of a triangle is defined as the total space occupied by the three sides of a triangle in a 2- dimensional plane. Formula: A = 1/2 × b ×hThe Perimeter of a Triangle: To calculate the perimeter of a triangle, we just add the length of its all sides.&nbsp; Suppose, if a triangle has sides x, y, and z, also the perimeter of that triangle will be: P = (x+y+z)Example:&nbsp; Input&nbsp; h and b : 3 &amp; 4 Output&nbsp; Area = 6 Perimeter = 10Now, in this video, we calculate the area &amp; perimeter of the triangle using 2 different methods: 1. Using simple formula [height and base of the triangle] 2. Using the user to define a functionApart from that the time and space complexity covered in this video.Javascript program to find the area &amp; perimeter of triangles : <a href="https://www.geeksforgeeks.org/how-to-find-the-area-of-a-triangle-using-javascript/">https://www.geeksforgeeks.org/how-to-find-the-area-of-a-triangle-using-javascript/</a>

Javascript program to find the area and perimeter of the triangle

In this video, we will write a Javascript program to generate multiplication of table.&nbsp; Here we will see 2 different methods for this task: 1. Using For Loop 2. Using Recursive approach 1. Using for loop: In this method, we use for loop to generate a table. Here first we define a number and run a for loop from 1 to 10. After that multiply i with N and print the table. Time and Space complexity: O(1) 2. Using Recursive Method: In this method, we will create a recursive function to generate the multiplication table. This function will take as input the local variable and the number that we are multiplying. The function will then return a string that corresponds to the multiplication table that we want to generate. Time complexity: O(N) Space complexity: O(1)Javascript program to generate multiplication table : <a href="https://www.geeksforgeeks.org/javascript-program-to-print-multiplication-table-of-a-number/">https://www.geeksforgeeks.org/javascript-program-to-print-multiplication-table-of-a-number/</a>

Javascript program to generate multiplication table

In this video, we will write a Javascript program to create multiline strings. As we know, the multi-line strings were not supported by JavaScript, but a new version of ES6 came out and introduced a string literal facility.A ES6 supports multi-line strings. Here in this video, we will see 3 different methods for creating a multiline strings in Javascript: Method 1: Using template literals Method 2: Using a backslash Method 3: Using concatenating the individual strings together [+ operator] Using template literals: In the first method, a multiline-strings are created by using template literals. The strings are delimited using backticks, unlike normal single &amp; double quotes delimiter. Using backslash: Here we use a backslash to escape the literal newlines. A backslash used to create multi-line strings is escaping every newline on each line. Using concatenating the individual strings together [+ operator]: In this method, by using concatenating the individual strings together we can create a multiline in Java script.Create multiline strings in JS: <a href="https://www.geeksforgeeks.org/how-to-create-multi-line-strings-in-javascript/">https://www.geeksforgeeks.org/how-to-create-multi-line-strings-in-javascript/</a>

Javascript program to create multi-line strings

In this video, we will write Javascript Program to Count the Frequency of each element in an Array.Examples: Input : arr[] = {10, 20, 20, 10, 10, 20, 5, 20} Output :&nbsp; 10 = 3 20 = 4 5 = 1To count the frequency of each element in an array we use 2 approaches:1. Using nested for loop: In the first approach, we run two for loops, and for every element count number of times, it occurs. To avoid duplicate printing, keep track of processed items. 2. Using MAP(),MAP.set(),MAP.has(): Here we use map(), traverse array elements, and count frequencies. To print elements according to the first occurrence, traverse the array one more time print frequencies of elements, and mark frequencies as -1 so that the same element is not printed multiple times.Here we see the time complexity of both mentioned approaches: 1. Using nested for loop [Time complexity: O(n^2)] 2. Using MAP(),MAP.set(),MAP.has() [Time complexity : O(n)]Javascript Program to Count the Frequency of each element in an Array : <a href="https://www.geeksforgeeks.org/javascript-program-for-counting-frequencies-of-array-elements/">https://www.geeksforgeeks.org/javascript-program-for-counting-frequencies-of-array-elements/</a>

Javascript program to count frequencies of array elements