java 常见api Arrays类

int类型数组

package daysreplace;
 
import java.util.Arrays;
 
public class Test {
    public static void main(String[] args) {
 
       int[] arrays={38,24,42,56,22,44};
 
        //直接输出数组名称就是内存地址
        System.out.println(arrays);
 
        //Arrays.toString()会将数组内容转成字符串形式
        System.out.println(Arrays.toString(arrays));
 
        Arrays.sort(arrays);
        System.out.println("排序后结果"+arrays);
        System.out.println("排序后结果从小到大"+Arrays.toString(arrays));
 
        System.out.println("排序后的结果从大到小");
        for (int i = arrays.length-1; i >=0 ; i--) {
            System.out.println(arrays[i]);
        }
       // System.out.println("排序后的结果从大到小"+Arrays.toString(arrays));
 
 
    }
}

char类型数组

package daysreplace;
 
import java.util.Arrays;
 
public class Test {
    public static void main(String[] args) {
 
        char[] ch={'a','c','b','m'};
        Arrays.sort(ch);
        System.out.println(Arrays.toString(ch));
 
    }
}