코드업 100제 자바[1010-1019]

코드업 100제 자바[1010-1019] 

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• 1010

import java.io.*;

public class Ex1010{
    public static void main (String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        int number = Integer.parseInt(br.readLine());
        bw.write(String.valueOf(number));
        bw.flush();
        bw.close();
    }
}

• 1011

import java.io.*;

public class Ex1011 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        String s = br.readLine();
        bw.write(s);
        bw.flush();
        bw.close();
    }
}

• 1012

import java.io.*;

public class Ex1012 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        String s = br.readLine();
        String answer = String.format("%.6f",Float.parseFloat(s));
        bw.write(answer);
        bw.flush();
        bw.close();


    }
}

• 1013

import java.io.*;
import java.util.StringTokenizer;

public class Ex1013 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st = new StringTokenizer(br.readLine());
        while (st.hasMoreTokens()) {
            bw.write(st.nextToken()+" ");
        }
        bw.flush();
        bw.close();

    }
}

• 1014

import java.io.*;


public class Ex1014 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        String[] nums = br.readLine().split(" ");
        bw.write(nums[1] +" " + nums[0]);
        bw.flush();
        bw.close();

    }
}

• 1015

import java.io.*;

public class Ex1015 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        String answer = String.format("%.2f", Float.parseFloat(br.readLine()));
        bw.write(answer);
        bw.flush();
        bw.close();

    }
}

• 1017

import java.io.*;

public class Ex1017 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        int number = Integer.parseInt(br.readLine());
        bw.write(number + " " + number + " " + number);
        bw.flush();
        bw.close();

    }
}

• 1018

import java.io.*;
import java.util.StringTokenizer;

public class Ex1018 {
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st = new StringTokenizer(br.readLine(), ":");
        StringBuilder sb = new StringBuilder();

        String hour = st.nextToken();
        String minute = st.nextToken();
        sb.append(hour);
        sb.append(":");
        sb.append(minute);
        bw.write(String.valueOf(sb));
        bw.flush();
        bw.close();
    }
}

• 1019

import java.io.*;
public class Ex1019 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

        String[] date = br.readLine().split("\\.");
        String year = date[0];
        String month = date[1];
        String day = date[2];

        StringBuilder sb = new StringBuilder();
        if (year.length() == 3){
            sb.append("0" + year);
        } else if(year.length() == 2){
            sb.append("00" + year);
        } else if(year.length() == 1){
            sb.append("000"+year);
        } else sb.append(year);

        if (month.length() == 1){
            sb.append("." + "0" + month);
        } else sb.append("."+ month);

        if(day.length() == 1) {
            sb.append("." + "0" + day);
        } else sb.append("." + day);

        bw.write(sb.toString());
        bw.flush();
        bw.close();


    }
}