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 Input and Output 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 – Java SHA 256 – Hacker Rank Solution
Java SHA 256 – Hacker Rank Solution
Cryptographic hash functions are mathematical operations run on digital data; by comparing the computed hash (i.e., the output produced by executing a hashing algorithm) to a known and expected hash value, a person can determine the data’s integrity. For example, computing the hash of a downloaded file and comparing the result to a previously published hash result can show whether the download has been modified or tampered with. In addition, cryptographic hash functions are extremely collision-resistant; in other words, it should be extremely difficult to produce the same hash output from two different input values using a cryptographic hash function.
Secure Hash Algorithm 2 (SHA-2) is a set of cryptographic hash functions designed by the National Security Agency (NSA). It consists of six identical hashing algorithms (i.e., SHA-256, SHA-512, SHA-224, SHA-384, SHA-512/224, SHA-512/256) with a variable digest size. SHA-256 is a -bit ( byte) hashing algorithm which can calculate a hash code for an input of up to bits. It undergoes rounds of hashing and calculates a hash code that is a -digit hexadecimal number.
Given a string, , print its SHA-256 hash value.
Input Format
A single alphanumeric string denoting .
Constraints
- String consists of English alphabetic letters (i.e., and/or decimal digits (i.e., through ) only.
Output Format
Print the SHA-256 encryption value of on a new line.
Sample Input 0
HelloWorld
Sample Output 0
872e4e50ce9990d8b041330c47c9ddd11bec6b503ae9386a99da8584e9bb12c4
Sample Input 1
Javarmi123
Sample Output 1
f1d5f8d75bb55c777207c251d07d9091dc10fe7d6682db869106aacb4b7df678
Java SHA 256 – Hacker Rank Solution
import java.util.Scanner; import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; public class Solution { public static void main(String[] args) throws NoSuchAlgorithmException { Scanner scan = new Scanner(System.in); String str = scan.next(); scan.close(); /* Encode the String using SHA-256 */ MessageDigest md = MessageDigest.getInstance("SHA-256"); md.update(str.getBytes()); byte[] digest = md.digest(); /* Print the encoded value in hexadecimal */ for (byte b : digest) { System.out.format("%02x", b); } } }
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