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Programming Articles
Page 1307 of 2547
Program to check whether a number is Proth number or not in C++
Given with a number ‘n’ and the task is to determine whether the given positive integer is a proth or not and display the result as an output.What is Proth Number?A proth number is given by$$N=k\cdot\:2^{n}+1$$Where, n is a positive integer and k is a odd positive integerThe first few proth numbers are given below −3, 5, 9, 13, 17, 25, 33, 41, 49, 57, 65, 81, 97.......Inputnumber: 17Outputits a proth numberInputnumber: 18Outputits not a proth numberApproach used in the given program is as followsInput the number to check for the conditionApply the given formula to check whether its a ...
Read MoreFind the uncommon values concatenated from both the strings in Java
To find the uncommon values concatenated from both the strings in Java, the code is as follows −Exampleimport java.util.*; import java.lang.*; import java.io.*; public class Demo{ public static String concat_str(String str_1, String str_2){ String result = ""; int i; HashMap my_map = new HashMap(); for (i = 0; i < str_2.length(); i++) my_map.put(str_2.charAt(i), 1); for (i = 0; i < str_1.length(); i++) if (!my_map.containsKey(str_1.charAt(i))) result += str_1.charAt(i); else my_map.put(str_1.charAt(i), ...
Read MoreProgram to check if water tank overflows when n solid balls are dipped in the water tank in C++
Given with the radius and height of cylindrical water tank, ‘n’ number of spherical solid balls with the radius and the volume of water in the tank and the task is to check whether the tank will overflow or not when balls are dipped in the tank.Formula to calculate the volumeCylinder 3.14 * r * r * hWhere, r is radius of tank and h is the height of the tankSphere (4/3) * 3.14 * R * R * RWhere, R is radius of sphere ballInput tank_height = 5 tank_radius = 2 water_volume = 10 capacity = 10 ball_radius = 2Output It will overflowApproach ...
Read MoreFind the first repeated word in a string in Java
To find the first repeated word in a string in Java, the code is as follows −Exampleimport java.util.*; public class Demo{ static char repeat_first(char my_str[]){ HashSet my_hash = new HashSet(); for (int i=0; i
Read MoreProgram for weighted mean of natural numbers in C++
Given with an array of natural numbers and one more array containing the weights of the corresponding natural numbers and the task is to calculate the weighted mean of natural numbers.There is a formula which is used for calculating the weighted mean of natural numbers.$$\overline{x}=\frac{\displaystyle\sum\limits_{i=1}^n (x_{i*}w_{i})}{\displaystyle\sum\limits_{i=1}^n w_{i}}$$Where, x is the natural number and w is the weighted associated with that natural number.Input X[] = {11, 22, 43, 34, 25, 16} W[] = {12, 12, 43, 54, 75, 16}Output weighted mean is : 29.3019Explanation (11*12 + 22*12 + 43*43 + 34*54 + 25*75 + 16*16) / (12 + 12 + 43 + 54 +75 ...
Read MoreProbability of getting more value in third dice throw in C++
Given three players A, B, C throwing dice, we have to find the probability of the C throwing the dice and the number scored by C is higher than both A and B.To check the probability of getting more value, we have to keep in mind that the value of the third dice throw is higher than the previous two.Like A thrown the dice and score 2 and B thrown the dice and scored 3 so the probability of C getting higher value is 3/6 = 1/2, because there are only 3 values which can be higher than the A ...
Read MoreProbability of rain on N+1th day in C++
Given with an array containing 0’s and 1’s where 0’s represents no rain and 1’s represent rainy day. The task is to calculate the probability of rain on N+1th day.To calculate the probability of rain on N+1th day we can apply the formulaTotal number of rainy days in the set / total number of days in aInput arr[] = {1, 0, 0, 0, 1 }Output probability of rain on n+1th day : 0.4Explanation total number of rainy and non-rainy days are: 5 Total number of rainy days represented by 1 are: 2 Probability of rain on N+1th day is: 2 / 5 = ...
Read MoreProbability of reaching a point with 2 or 3 steps at a time in C++
A person “A” is walking from a starting position X = 0, the task is to find the probability to reach exactly X = num, if he/she can either take 2 or 3 steps. Probability for step length 2 i.e. P, the probability for the step length 3 is 1 - P.Input num = 5, p = 0.2Output 0.32Explanation There can be 2 ways to reach num, i.e, 5 2+3 with probability 0.2 * 0.8 = 0.16 3+2 with probability 0.8 * 0.2 = 0.16 So, total probability will be 0.16 + 0.16 = 0.32Input num = 2, p = 0.1Output 0.1Approach used below is ...
Read MoreJava program to find IP Address of the client
To find the IP Address of the client, the Java code is as follows −Exampleimport java.net.*; import java.io.*; import java.util.*; import java.net.InetAddress; public class Demo{ public static void main(String args[]) throws Exception{ InetAddress my_localhost = InetAddress.getLocalHost(); System.out.println("The IP Address of client is : " + (my_localhost.getHostAddress()).trim()); String my_system_address = ""; try{ URL my_url = new URL("http://bot.whatismyipaddress.com"); BufferedReader my_br = new BufferedReader(new InputStreamReader(my_url.openStream())); my_system_address = my_br.readLine().trim(); } ...
Read MoreProbability that the pieces of a broken stick form a n sided polygon in C++
We are given with the stick of any length and that stick can be broken randomly into n pieces which can be of type integer or floating point and the task is to find whether the broken pieces can form a n sided polygon.We can calculate the probability by applying the formula$$P(E^{\prime})=1-P(E)=1-\frac{n}{2^{n-1}}$$Where, n is the number of pieces generated by breaking the stick into parts.Input length = 10 , pieces = 4Output probability is : 0.5Explanation − given with length of size 10 cm and it is broken into 4 partsInput length = 5 , pieces = 3Output probability is : 0.25Explanation − given ...
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