public class Exam_03 {

public static void main(String ... args) {
short[] x = {3, 6, 3, 4, 7, 8, 4, 3};

System.out.printf("x.length = %d\n", x.length);

for(int i = 0 ; i < x.length ; i++)
  System.out.printf("x[%d] = %d\n", i, x[i]);

}
}

public class Exam_04 {

public static void main(String[] args) {

int [] x = new int[5];
boolean [] y = new boolean[3];

for(int i = 0 ; i < x.length ; i++)
  System.out.printf("x[%d]=%d\n", i, x[i]);

for(int i = 0 ; i < y.length ; i++)
  System.out.printf("y[%d]=%b\n", i, y[i]);

}

}

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

public class Exam_04 {

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

InputStreamReader is = new InputStreamReader(System.in);
BufferedReader bs = new BufferedReader(is);
Random r = new Random();

System.out.printf("생성할 배열의 크기를 지정해주세요 :");
   
int num = Integer.parseInt(bs.readLine());
int [] x = new int[num];
   
// 배열 갯수 미만의 랜덤 값을 넣는다.
for(int i = 0 ; i < x.length ; i++)
  x[i] = r.nextInt(num);

for(int i = 0 ; i < x.length ; i++)
  System.out.printf("x[%d]=%d\n", i, x[i]);
 
}

}

public class Exam_14 {

public static void main(String[] args) {
int [][] a = new int[3][2];

for(int i = 0 ; i < a.length ; i++)
  for(int j = 0 ; j < a[i].length ; j++)
   System.out.printf("a[%d][%d] = %d\n", i, j, a[i][j]);
}

}

import java.util.Random;

public class Exam_14_1 {

public static void main(String[] args) {
 Random r = new Random();
 
 int[][] a = new int[3][];
 
 for(int i = 0 ; i < a.length ; i++)
  a[i] = new int[r.nextInt(5)];
   
 for(int i = 0 ; i < a.length ; i++) {
  System.out.printf("a[%d]의 길이 : %d\n", i, a[i].length);
 
  for(int j = 0 ; j < a[i].length ; j++)
   System.out.printf("a[%d][%d]=%d\n", i, j, a[i][j]);
 }
 
}

}