10810 공넣기

 

1. Scanner 입력

import java.util.Scanner;


public class Main {

    public static void main(String[] args)  {

        Scanner sc = new Scanner(System.in);
			
        //바구니의 개수
        int N = sc.nextInt();
        int[] arr = new int[N];
		//공을 넣는 횟수
        int M = sc.nextInt();

        for(int I=0; I<M; I++){

           int i = sc.nextInt();
           int j = sc.nextInt();
           int k = sc.nextInt();

           for(int J = i-1; J<j; J++){
               arr[J] = k;
           }
        }

        for(int k=0; k<arr.length; k++) {
            System.out.print(arr[k] + " ");
        }
    }
}

 

2. BufferedReader로 입력받았을 때

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class Main {

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

        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());

        int n = Integer.parseInt(st.nextToken());
        int[] arr = new int[n];
        int m = Integer.parseInt(st.nextToken());

        for(int I=0; I<m; I++){

            st = new StringTokenizer(br.readLine());

           int i = Integer.parseInt(st.nextToken());
           int j = Integer.parseInt(st.nextToken());
           int k = Integer.parseInt(st.nextToken());

           for(int J = i-1; J<j; J++){
               arr[J] = k;
           }
        }
        br.close();

        for(int k=0; k<arr.length; k++) {
            System.out.print(arr[k] + " ");
        }
    }
}

 

 

확실히 시간 차이가 2배정도 난다.