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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to find the rate of return for a vector values in R?
To find the rate of return for a vector values, we can use the formula for rate of return. For example, if we have a vector called x then the rate of return can be calculated by using the syntax diff(x)/x[-length(x)]. The output will be in decimal form and if we want to convert it to percentage then the output needs to be multiplied with 100, we can also input the same within the formula as (diff(x)/x[-length(x)])*100.Examplex1
Read MoreComparing corresponding values of two arrays in JavaScript
Suppose we have two array of numbers of the same length like this −const arr1 = [23, 67, 12, 87, 33, 56, 89, 34, 25]; const arr2 = [12, 60, 45, 54, 67, 84, 36, 73, 44];We are required to write a JavaScript function that takes in two such arrays as the first and the second argument. The function should then compare the corresponding values of both the arrays, and the function should return −-1, if the count of corresponding numbers greater in the first array than the second array are more than corresponding numbers greater in the second array1, ...
Read MorePositive, negative and zeroes contribution of an array in JavaScript
Suppose we have an array of integers, (positive, negative and zero) like this −const arr = [23, -1, 0, 11, 18];We are required to write a JavaScript function that takes in one such array as the first and the only argument. The function should then find the fractional ratio for all three different groups, namely positive, negative and zero.For example −For the above array, its length is 5, the output for this array should be −const output = [.2, .2, .6];The output array will always contain 3 numbers, representing the fractional ratio of negative, zero and positive integers respectively. One ...
Read MoreDivide a number into two parts in C++ Program
In this tutorial, we are going to write a program that divides the given number into two partsIt's a straightforward problem to solve. We can get a number by diving the given number. And we can get the second number by subtracting the result from the total.If the given number is n, then the two numbers area = n / 2 b = n - aExampleLet's see the code.#include using namespace std; void divideTheNumber(int n) { int a = n / 2; int b = n - a; cout
Read MoreHow to add an extra point to scatterplot using ggplot2 in R?
To add an extra point to scatterplot using ggplot2, we can still use geom_point function. We just need to use aes function for quoting with new values for the variables, also we can change the color of this point using colour argument. The display of an extra point will help us to distinguish between a threshold/new value and remaining values.Consider the below data frame −Examplex
Read MoreDivide a string in N equal parts in C++ Program
In this tutorial, we are going to write a program that divides the given string into N equal parts.If we can't divide the string into N equal parts, then print the same thing. Let's see the steps to solve the problem.Initialize the string and N.Find the length of the string using the size method.Check whether the string can be divided into N parts or not.If string can't divide into N equal parts, then print a message.Else iterate through the string and print each part.ExampleLet's see the code.#include using namespace std; void divideTheString(string str, int n) { int str_length ...
Read MoreUpdate the bit in the given position or Index of a number using C++
In the given problem, we have to update the bit of the given index of a number. To update the number, we can use Bit Manipulation operation on a given number. For example, Input-1 −N= 25 bit= 1 position= 2Output −29Explanation − Since the given input 25 can be written in binary as ‘11001’ whereas the position index is ‘2’ and the bit is ‘1’. After replacing the digits at the given position the output will be ‘11101’ which is equivalent to ‘29’.Approach to solve this problemIn the given position or index of a number, the task is to update ...
Read MoreHow to convert binary variable to 0/1 format in an R data frame?
A binary variable is a type of variable that can take only two possible values like gender that has two categories male and female, citizenship of a country with two categories as yes and no, etc. If the binary variable is not in 0/1 format then it can be converted with the help of ifelse function. Check out the below examples to understand how it works.Consider the below data frame −ExampleTemp
Read MoreDivide every element of one array by other array elements in C++ Program
In this tutorial, we are going to write a program that divides one array of elements by another array of elements.Here, we are following a simple method to complete the problem. Let's see the steps to solve the problem.Initialize the two arrays.Iterate through the second array and find the product of the elements.Iterate through the first array and divide each element with a product of the second array elements.ExampleLet's see the code.#include using namespace std; void divideArrOneWithTwo(int arr_one[], int arr_two[], int n, int m) { int arr_two_elements_product = 1; for (int i = 0; i < m; ...
Read MoreValid Sudoku in C++
Let’s suppose we’ve given a 9×9 matrix called a Sudoku. The task is to check whether the given Sudoku Pattern is valid or not.In general, a Sudoku board look like this, Rules of Sudoku −Every row contains a number in the range 1-9Every column contains numbers in the range 1-9.Each block of 3×3 contains unique numbers in it.A particular row cannot have the same number.A particular column cannot have the same number.For ExampleInput-1 −sudoku[]= [["3", "5", ".", ".", "2", ".", ".", ".", "."] , ["7", ".", ".", "1", "6", "5", ".", ".", "."] , [".", "9", "8", ...
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