영상
개념
package 배열8_개념;
import java.util.Arrays;
public class 배열8_개념01_2차원배열 {
public static void main(String[] args) {
int[] temp = {1, 2, 3, 4, 5};
System.out.println(Arrays.toString(temp));
System.out.println(temp.length);
int[][] arr = new int[2][3];
arr[0][0] = 1;
arr[0][1] = 2;
arr[0][2] = 3;
arr[1][0] = 4;
arr[1][1] = 5;
arr[1][2] = 6;
for(int i=0; i<arr.length; i++) {
for(int j=0; j<arr[i].length; j++) {
System.out.println(arr[i][j]);
}
}
System.out.println();
System.out.println(Arrays.toString(arr[0]));
System.out.println(Arrays.toString(arr[1]));
for(int i=0; i<2; i++) {
System.out.println(Arrays.toString(arr[i]));
}
System.out.println(arr.length); // 행의 길이
System.out.println(arr[0].length); // 열의 길이
System.out.println(arr[1].length);
}
}
Java
복사