[해커랭크] Staircase

https://www.hackerrank.com/challenges/staircase/problem?isFullScreen=true

Staircase | HackerRank

 

Staircase detail

This is a staircase of size :

   #
  ##
 ###
####

Its base and height are both equal to . It is drawn using # symbols and spaces. The last line is not preceded by any spaces.

Write a program that prints a staircase of size .

Function Description

Complete the  function with the following parameter(s):

• : an integer

Print

Print a staircase as described above. No value should be returned.
Note: The last line is not preceded by spaces. All lines are right-aligned.

Input Format

A single integer, , denoting the size of the staircase.

Constraints

 .

Sample Input

6 

Sample Output

     #
    ##
   ###
  ####
 #####
######

Explanation

The staircase is right-aligned, composed of # symbols and spaces, and has a height and width of .

 

 

 

import java.io.*;

import java.math.*;

import java.security.*;

import java.text.*;

import java.util.*;

import java.util.concurrent.*;

import java.util.function.*;

import java.util.regex.*;

import java.util.stream.*;

import static java.util.stream.Collectors.joining;

import static java.util.stream.Collectors.toList;

class Result {

    /*

     * Complete the 'staircase' function below.

     *

     * The function accepts INTEGER n as parameter.

     */

    public static void staircase(int n) throws IOException {

    // Write your code here

        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

       

        for(int line=1; line<=n; line++){

            for(int index=1; index<=n; index++){

                // 5, 1

                // 4, 2

                // 3, 3

                if (index <= (n-line)){

                    bw.write(" ");

                }

                else{

                    bw.write("#");

                }

            }

            bw.newLine();

        }

        bw.close();

    }

}

public class Solution {

    public static void main(String[] args) throws IOException {

        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));

        int n = Integer.parseInt(bufferedReader.readLine().trim());

        Result.staircase(n);

        bufferedReader.close();

    }

}