IT/Java
Java ArrayController
유기스토리
2020. 6. 22. 21:45
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class ArrayController {
public void start() {
// sortArr();
converToString();
}
/* 배열 정렬 */
public void sortArr() {
int[] arr = {5,4,9,7,8,1,3,5,4,8,7,6};
Arrays.sort(arr); // 1 3 4 4 5 5 6 7 7 8 8 9
for(int i=0; i<arr.length; i++) {
System.out.print(arr[i]+" ");
}
}
/* 배열을 string으로 변환 */
public void converToString() {
int[] arr = {5,4,9,7,8,1,3,5,4,8,7,6};
String str = Arrays.toString(arr);
System.out.println(str);
}
/* array to list */ //////////////////
public void convertToList() {
int[] arr = {5,4,9,7,8,1,3,5,4,8,7,6};
List<int[]> arrList = Arrays.asList(arr);
ArrayList<Integer> arrayList = (ArrayList)arrList;
System.out.println(arrayList.toString());
}
public static void main(String[] args) {
new ArrayController().start();
}
}