11022 A+B - 8

* BufferedReader, BufferedWriter, StringTokenizer

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

public class Main {
	public static void main(String[] args) throws Exception {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
		
		int num = Integer.parseInt(br.readLine());
		for(int i=1; i<=num; i++) {
			StringTokenizer token = new StringTokenizer(br.readLine());
			int a = Integer.parseInt(token.nextToken());
			int b = Integer.parseInt(token.nextToken());
			int c = a + b;
			bw.append("Case #");
			bw.append(i+": ");
			bw.append(a+" + "+b);
			bw.append(" = "+c);
			bw.append("\n");
		}
		br.close();
		bw.flush();
		bw.close();
	}
}

 

* BufferedReader, StringBuilder, StringTokenizer, STATIC FINAL 상수

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

public class Main {
	public static final String NEW_LINE = "\n";

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

		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		StringBuilder sb = new StringBuilder();

		int times = Integer.parseInt(br.readLine());

		for (int i = 0; i < times; i++) {
			StringTokenizer st = new StringTokenizer(br.readLine());
			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			int sum = a + b;
			sb.append("Case #").append(i + 1).append(": ").append(a + " + " + b + " = " + sum).append(NEW_LINE);
		}

		System.out.println(sb.toString());

	}
}

 

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메모리, 속도 부분에서 BufferedWriter보다 StringBuilder가 우수