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| import java.io.IOException; | |
| import java.io.BufferedReader; | |
| import java.io.InputStreamReader; | |
| import java.util.StringTokenizer; | |
| class IO_2 { | |
| static public void main(String[] args) throws IOException { | |
| BufferedReader bf = new BufferedReader(new InputStreamReader(System.in)); | |
| String line; | |
| StringBuilder sb = new StringBuilder(); | |
| StringTokenizer st; | |
| // cada linea es del tipo N_i A_1 A_2 A_3 ... A_(N_i) | |
| // a continuacion, dos formas equivalentes de "parsear" estos datos | |
| while((line = bf.readLine()) != null) { | |
| // forma # 1 | |
| st = new StringTokenizer(line); | |
| while(st.hasMoreTokens()) { | |
| String token = st.nextToken(); // token es un numero, pero de tipo string | |
| int num = Integer.parseInt(token); // ahora es un numero, pero si no, arrojara una excepcion | |
| /* hago cosas con el numero */ | |
| sb.append(num + "\n"); | |
| } | |
| // forma # 2 | |
| String[] tokens = line.split(" "); // divide el string basado en espacios y guarda cada parte en un arreglo | |
| for(String token : tokens) { // equivalente a "for token in tokens" de python | |
| int num = Integer.parseInt(token); // ahora es un numero, pero si no, arrojara una excepcion | |
| /* hago cosas con el numero */ | |
| sb.append(num + "\n"); | |
| } | |
| } | |
| System.out.println(sb.toString()); // imprimimos todo junto al final | |
| } | |
| } |
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