[BJ16436479] 팰린드롬인지 확인하기

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Main {
  
  public static void main( final String[] args ) throws Exception {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
    
    String str = br.readLine();
    int length = str.length();
    int result = 1;
    for ( int i = 0; i < (length / 2); i++ ) {
      if ( str.charAt(i) != str.charAt(length - (i + 1)) ) {
        result = 0;
      }
    }
    bw.append(result + "");
    bw.flush();
  }
  
}

 

---

 

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Main {

  public static void main( final String[] args ) throws Exception {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));

    String str = br.readLine();
    StringBuffer sb = new StringBuffer(str);
    if ( str.equals(sb.reverse().toString()) ) {
      bw.append("1");
      bw.flush();
    } else {
      bw.append("0");
      bw.flush();
    }
  }

}

속도는 같어