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Articles on Trending Technologies
Technical articles with clear explanations and examples
Subarray sum with at least two elements in JavaScript
ProblemWe are required to write a JavaScript function that takes in an array of Integers, arr, as the first argument and a single Integer, target as the second and first argument. Our function should check whether there exists a continuous subarray of size at least 2 that sums up to the multiple of k, that is, sums up to n*k where n can be any integer.We return true if it exists, false otherwise.For example, if the input to the function is −const arr = [23, 2, 6, 4, 7]; const target = 6;Then the output should be −const output = ...
Read MoreCan we override default methods in Java?
An interface in Java is similar to class but, it contains only abstract methods and fields which are final and static.Since Java8 static methods and default methods are introduced in interfaces. Unlike other abstract methods these are the methods can have a default implementation. If you have default method in an interface, it is not mandatory to override (provide body) it in the classes that are already implementing this interface.In short, you can access the default methods of an interface using the objects of the implementing classes.Exampleinterface MyInterface{ public static int num = 100; public default void ...
Read MoreFinding the longest substring uncommon in array in JavaScript
SubsequenceFor the purpose of this problem, we define a subsequence as a sequence that can be derived from one sequence by deleting some characters without changing the order of the remaining elements. Any string is a subsequence of itself and an empty string is a subsequence of any string.ProblemWe are required to write a JavaScript function that takes in an array of strings as the only argument. Our function needs to find the length of the longest uncommon subsequence among them.By longest uncommon subsequence we mean, longest subsequence of one of the strings in the array and this subsequence should ...
Read MoreHow to create the stacked bar plot using ggplot2 in R with labels on the plot?
The creation of stacked bar plot using ggplot2 can be done with the help of position="stack" argument inside geom_bar function. If we want to create the stacked bar plot then geom_text function will be used with the same position argument and the aes to define the labels as shown in the below example.Exampledf
Read MoreHow to write the temperature conversion table by using function?
Temperature conversion is nothing but converting Fahrenheit temperature to Celsius or Celsius to Fahrenheit.In this programming, we are going to explain, how to convert the Fahrenheit temperature to Celsius temperature and how to represent the same in the form of the table by using a function.ExampleFollowing is the C program for temperature conversion −#include float conversion(float); int main(){ float fh,cl; int begin=0,stop=300; printf("Fahrenheit \t Celsius");// display conversion table heading printf("----------\t-----------"); fh=begin; while(fh
Read MoreDetermining rank on basis of marks in JavaScript
ProblemWe are required to write a JavaScript function that takes in an array, arr, of numbers as the only argument.The array basically consists of the marks scored by some students, based on the array of marks, our function should prepare and return an array of ranks which should contain the rank of corresponding students on the basis of how high their marks are in the marks array arr.For instance, for the highest entry in array arr, the corresponding entry in output array should be 1, 2 for second highest and so on.For example, if the input to the function is ...
Read MoreWrite a Golang program to print the Fibonacci series
Definition: In a Fibonacci series, the next number would be the summation of its two previous numbers, series starting from 0 and 1.ExamplesPrint a fibonacci series up to num = 10;Series: 1, 2, 3, 5, 8, next is 13 but greater than 10;Approach to solve this problemStep 1: Define a function that accepts a numbers(num) type is int, till then need to print the series.Step 2: Take two initial numbers for the series, i.e., 0 and 1.Step 3: Start a true for loop and declare a third variable to store previous two values.Step 4: Print the summation of two numbers until ...
Read MoreNext Greater Element in Circular Array in JavaScript
Circular ArrayAn array in which the next element of the last element is the first element of the array is often termed as circular.Obviously, there exists no such mechanism to store data like this, data will still be stored in continuous memory blocks and circular arrays are more like an idea than reality.ProblemWe are required to write a JavaScript function that takes in a circular array of Integers, arr, as the first and the only argument.The function should then construct and return an array that contains the next greater element for each corresponding element of the original array. The Next ...
Read MoreHow to find the extremes of a data frame column in R if infinity exists in the column?
To find the extremes of a data frame column that is numeric can be done with the help of min and max function but if we want to get the same in single line code then range function can be used. If there are some infinity values in the column then range.default function will be used as shown in the below example.Exampley1
Read MoreWrite a C program to find out profit or loss in buying an article
The formula for finding profit is as follows if the selling price is greater than cost price −profit=sellingPrice-CosePrice;The formula for finding loss is as follows if cost price is greater than selling price −loss=CostPrice-SellingPriceNow, apply this logic in the program and try to find whether the person gets a profit or loss after buying any article −ExampleFollowing is the C program to find the profit or loss −#include int main(){ float CostPrice, SellingPrice, Amount; printf(" Enter the product Cost : "); scanf("%f", &CostPrice); printf(" Enter the Selling Price) : "); scanf("%f", &SellingPrice); if (SellingPrice ...
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