Arraysクラス
2892 ワード
しゅつりょく
import java.util.Arrays;
public class Main1 {
public static void main(String[] args) {
int[] arr = {0,1,2,3,4};
int[][] arr2D = {{0,1},{0,1}};
System.out.println(Arrays.toString(arr));
System.out.println(Arrays.deepToString(arr2D));
}
}
출력 : [0, 1, 2, 3, 4]
[[0, 1], [0, 1]]
比較
import java.util.Arrays;
public class Main1 {
public static void main(String[] args) {
int [] arr = {1,2,3,4};
int [] arr2 = {1,2,3,4};
System.out.println(Arrays.equals(arr,arr2));
}
}
출력 : true
import java.util.Arrays;
public class Main1 {
public static void main(String[] args) {
int [][] arr = {{1,2,3,4},{3,4,6,7}};
int [][] arr2 = {{1,2,3,4},{3,4,6,7}};
System.out.println(Arrays.equals(arr,arr2));
System.out.println(Arrays.deepEquals(arr,arr2));
}
}
출력 : false
true
ふくしゃ
import java.util.Arrays;
public class Main1 {
public static void main(String[] args) {
int [] arr = {1,2,3,4};
int [] arr1 = Arrays.copyOf(arr,1);
int [] arr2 = Arrays.copyOf(arr,2);
int [] arr_clone = Arrays.copyOf(arr, arr.length);
System.out.println(Arrays.toString(arr));
System.out.println(Arrays.toString(arr1));
System.out.println(Arrays.toString(arr2));
System.out.println(Arrays.toString(arr_clone));
}
}
출력 : [1, 2, 3, 4]
[1]
[1, 2]
[1, 2, 3, 4]
import java.util.Arrays;
public class Main1 {
public static void main(String[] args) {
int [] arr = {1,2,3,4};
int [] arr1 = Arrays.copyOfRange(arr,0,3);
int [] arr2 = Arrays.copyOfRange(arr,1,4);
int [] arr_clone = Arrays.copyOfRange(arr, 0,arr.length);
System.out.println(Arrays.toString(arr));
System.out.println(Arrays.toString(arr1));
System.out.println(Arrays.toString(arr2));
System.out.println(Arrays.toString(arr_clone));
}
}
출력:[1, 2, 3, 4]
[1, 2, 3]
[2, 3, 4]
[1, 2, 3, 4]
ツールバーの
import java.util.Arrays;
public class Main1 {
public static void main(String[] args) {
int [] arr = {7,8,32,2,1,0};
System.out.println(Arrays.toString(arr));
Arrays.sort(arr);
System.out.println(Arrays.toString(arr));
}
}
출력 : [7, 8, 32, 2, 1, 0]
[0, 1, 2, 7, 8, 32]
Reference
この問題について(Arraysクラス), 我々は、より多くの情報をここで見つけました https://velog.io/@voicesplit/Arrays클래스テキストは自由に共有またはコピーできます。ただし、このドキュメントのURLは参考URLとして残しておいてください。
Collection and Share based on the CC Protocol