Hello Programmers/Coders, Today we are going to share solutions of Programming problems of HackerRank of Programming Language Java . At Each Problem with Successful submission with all Test Cases Passed, you will get an score or marks. And after solving maximum problems, you will be getting stars. This will highlight your profile to the recruiters.
In this post, you will find the solution for Prime Checker in Java-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.
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Introduction To Java
JAVA was developed by James Gosling at Sun Microsystems Inc in the year 1991, later acquired by Oracle Corporation. It is a simple programming language. Java makes writing, compiling, and debugging programming easy. It helps to create reusable code and modular programs.
Java is a class-based, object-oriented programming language and is designed to have as few implementation dependencies as possible. A general-purpose programming language made for developers to write once run anywhere that is compiled Java code can run on all platforms that support Java. Java applications are compiled to byte code that can run on any Java Virtual Machine. The syntax of Java is similar to c/c++.
Link for the Problem – Prime Checker – Hacker Rank Solution
Prime Checker – Hacker Rank Solution
You are given a class Solution and its main method in the editor. Your task is to create a class Prime. The class Prime should contain a single method checkPrime.
The locked code in the editor will call the checkPrime method with one or more integer arguments. You should write the checkPrime method in such a way that the code prints only the prime numbers.
Please read the code given in the editor carefully. Also please do not use method overloading!
Note: You may get a compile time error in this problem due to the statement below:
BufferedReader br=new BufferedReader(new InputStreamReader(in));
This was added intentionally, and you have to figure out a way to get rid of the error.
Input Format
There are only five lines of input, each containing one integer.
Output Format
There will be only four lines of output. Each line contains only prime numbers depending upon the parameters passed to checkPrime in the main method of the class Solution. In case there is no prime number, then a blank line should be printed.
Sample Input
2 1 3 4 5
Sample Output
2 2 2 3 2 3 5
Prime Checker – Hacker Rank Solution
import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
import java.lang.reflect.*;
import static java.lang.System.in;
class Prime{
boolean chk(int n){
if(n<2)return false;
for(int i=2;i*i<=n;i++)if(n%i==0)return false;
return true;
}
void checkPrime(Integer... a){
boolean f=false;
for(int i=0;i<a.length;i++){
if(chk(a[i])){
if(f)java.lang.System.out.print(" ");
f=true;
java.lang.System.out.print(a[i]);
}
}
java.lang.System.out.println();
}
}
class Solution{
public static void main(String[] args){
try{
BufferedReader br=new BufferedReader(new InputStreamReader(in));
int n1=Integer.parseInt(br.readLine());
int n2=Integer.parseInt(br.readLine());
int n3=Integer.parseInt(br.readLine());
int n4=Integer.parseInt(br.readLine());
int n5=Integer.parseInt(br.readLine());
Prime ob=new Prime();
ob.checkPrime(n1);
ob.checkPrime(n1,n2);
ob.checkPrime(n1,n2,n3);
ob.checkPrime(n1,n2,n3,n4,n5);
Method[] methods=Prime.class.getDeclaredMethods();
Set<String> set=new HashSet<>();
boolean overload=false;
for(int i=0;i<methods.length;i++){
if(set.contains(methods[i].getName())){
overload=true;
break;
}
set.add(methods[i].getName());
}
if(overload){
throw new Exception("Overloading not allowed");
}
}catch(Exception e){
System.out.println(e);
}
}
}
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