Skip to main content

Featured

say hello world with C++ - Solution in Hacker Rank - hackerranksolutions8

  Objective This is a simple challenge to help you practice printing to  stdout . You may also want to complete  Solve Me First  in C++ before attempting this challenge. We’re starting out by printing the most famous computing phrase of all time! In the editor below, use either  printf  or  cout  to print the string  Hello ,World!  to  stdout . The more popular command form is  cout . It has the following basic form: cout<<value_to_print<<value_to_print; Any number of values can be printed using one command as shown. The  printf  command comes from C language. It accepts an optional format specification and a list of variables. Two examples for printing a string are: printf("%s", string);   printf(string); Note that neither method adds a newline. It only prints what you tell it to. Output Format Print   Hello ,World!   to stdout. Sample Output Hello, World! Solution:- //Say Hello, ...
Post a Comment
Read more

Java Comparator hackerrank solution -hackerranksolutionn8.blogspot

 Comparators are used to compare two objects. In this challenge, you’ll create a comparator and use it to sort an array.

The Player class is provided for you in your editor. It has 2  fields: a name String and a  score integer.

Given an array of  n  Player objects, write a comparator that sorts them in order of decreasing score; if 2   or more players have the same score, sort those players alphabetically by name. To do this, you must create a Checker class that implements the Comparator interface, then write an int compare(Player a, Player b) method implementing the Comparator.compare(T o1, T o2) method.

Input Format

Input from stdin is handled by the locked stub code in the Solution class.

The first line contains an integer, n  , denoting the number of players.
Each of the  n  subsequent lines contains a player’s    name and  score  , respectively.

Constraints

  • 0 < score < 1000
  •  players can have the same name.
  • Player names consist of lowercase English letters.

Output Format

You are not responsible for printing any output to stdout. The locked stub code in Solution will create a Checker object, use it to sort the Player array, and print each sorted element.

Sample Input

5
amy 100
david 100
heraldo 50
aakansha 75
aleksa 150

Sample Output

aleksa 150
amy 100
david 100
aakansha 75
heraldo 50

Solution:-

class Checker implements Comparator<Player>{
    @Override
    public int compare (Player p1,Player p2){
        if(p1.score==p2.score){
            return p1.name.compareTo(p2.name);
        }
        else{
            return p2.score-p1.score;
        }
    }
}

Comments

Post a Comment