Programming Articles - Page 2381 of 3363

Given with an input of string and the task is to check whether the first and last characters of given string is equal or not.ExampleInput-: study Output-: not equal    As the starting character is ‘s’ and the end character of a string is ‘y’ Input-: nitin Output-: yes it have first and last equal characters    As the starting character is ‘n’ and the end character of a string is ‘n’Approach used below is as follows −Input the string and store in an array of strings.Calculate the length of a string using length() functionCheck first and last element of ... Read More

Given a n number of vertices of a graph, the task is to calculate the edge cover of the graph. Edge cover is to find the minimum number of edges required to cover every vertex of the graph.Like we have n = 5Then its graph will be like −So its edge cover is 3Let’s take another example where the n is 8And its edge cover will be:4ExampleInput: n= 5 Output: 3 Input: n= 8 Output: 4Approach used below is as follows −Take the input from the userFind the ceiling value of the result of number of vertices by dividing it ... Read More

Given with the cost price(CP) and the selling price(SP) and the task is to calculate the profit gained or loss incurred.Cost price or CP is the price at which the product is purchased by the seller and the selling price or SP is the price at which the product is sold by the seller.There is a formula to calculate profit gained or loss incurredProfit = Selling price – Cost priceIf Selling price is greater than cost price than there will be a profitLoss = Cost price – Selling priceIf cost price is greater than selling price than there will be ... Read More

Given with the original cost and net price as an input and the task is to calculate the GST percentage and display the resultGST stands for Goods and Service task. It is always included in the Net price of the product and before calculating the GST percentage we need to calculate GST amount and for that there are formulas availableNetprice = originalcost + GSTAmountGSTAmount = Netprice – original_costGST_Percentage = (GSTAmount * 100)/ originalcostGST % formula = (GSTAmount*100) / originalcostExampleInput-: cost = 120.00    price = 150.00 Output-: GST amount is = 25.00 % Input-: price = 120.00    cost = ... Read More

Given with the two points coordinates and the task is to find the distance between two points and display the result.In a two dimension plane there are two points let’s say A and B with the respective coordinates as (x1, y1) and (x2, y2) and to calculate the distance between them there is a direct formula which is given below$$\sqrt{\lgroup x2-x1\rgroup^{2}+\lgroup y2-y1\rgroup^{2}}$$Given below is the diagram representing two points and their differences$$\frac{(x_2-x_1)}{(x_1, y_1)\:\:\:\:\:\:(y_2-y_1)\:\:\:\:\:\:(x_2, y_2)}$$Approach used below is as follows −Input the coordinates as x1, x2, y1 and y2Apply the formula to compute the difference between two pointsPrint the distanceAlgorithmStart Step ... Read More

Given with the 3-D plane and hence three coordinates and the task is to find the distance between the given points and display the result.In a three dimension plane there are three axis that are x-axis with its coordinates as (x1, y1, z1), y-axis with its coordinates as (x2, y2, z2) and z-axis with its coordinates as (x3, y3, z). To calculate the distance between them there is a direct formula which is given below$$\sqrt{\lgroup x2-x1\rgroup^{2}+\lgroup y2-y1\rgroup^{2}+\lgroup z2-z1\rgroup^{2}}$$Given below is the diagram representing three different axis and their coordinatesApproach used below is as follows −Input the coordinates as (x1, y1, ... Read More

Given with the current date and the birth date of a person and the task is to calculate his current age.ExampleInput-: present date-: 21/9/2019    Birth date-: 25/9/1996 Output-: Present Age    Years: 22 Months:11 Days: 26Approach used below is as follows −Input the current date and birth date of a personCheck for the conditionsIf current month is less than the birth month, then we will not consider the current year because this year has not been completed yet and to compute the differences in months by adding 12 to the current month.If the current date is less than the ... Read More

A JSONObject is an unordered collection of a key, value pairs, and the values can be any of these types like Boolean, JSONArray, JSONObject, Number and String. The constructor of a JSONObject can be used to convert an external form JSON text into an internal form whose values can be retrieved with the get() and opt() methods or to convert values into a JSON text using the put() and toString() methods.In the below example, we can sort the values of a JSONObject in the descending order.Exampleimport org.json.*; import java.util.*; public class JSonObjectSortingTest {    public static void main(String[] args) {       ... Read More

Given with the weight and height of a person and the task is to find the BMI i.e. body mass index of his body and display it.For calculating the body mass index we require two things −WeightHeightBMI can be calculated using the formula given below −BMI = (mass or weight) / (height*height)Where weight is in kg and height is in metersExampleInput 1-: weight = 60.00    Height = 5.1 Output -: BMI index is : 23.53 Input 2-: weight = 54.00    Height = 5.4 Output -: BMI index is : 9.3Approach used below is as follows −Input weight(kg) and ... Read More

Given with the sequence and the task is to identify whether the given sequence is sa ISBN number or not.What is an ISBN numberISBN stands for International Standard Book Number is a 10 digit number till December 2006 and now it is revised to 13 digit number from 1 January 2007. Given below is the implementation of 10 digits ISBN.ISBN digit has a pattern in it as −Starting 9 digits of a number represents Title, Publisher and Group of the book. The value of first 9 digit can range from 0 - 9Last 1 digit checks whether the ISBN is ... Read More