数组1

package mypro01;

import java.util.Arrays;

public class Test9 {
    
    
    public static void main(String[] args) {

        //run as -->run configuration-->arguments
        System.out.println(args[0]);
        System.out.println(args[1]);
        System.out.println(args[2]);
        
        int [] x= {4,8,6,1};
        int [][] y= {
                {1,2},
                {3,4}
                
        };
        
        
        //打印数组 Arrays.toString()
        
        System.out.println(x);//[I@3796751b
        System.out.println(Arrays.toString(x));//[4,8,6,1]
        
        System.out.println(y);//[[I@67b64c45
        System.out.println(Arrays.toString(y));//[[I@4411d970, [I@6442b0a6]
        
        //数组排序  Arrays.sort()
        Arrays.sort(x);
        System.out.println(Arrays.toString(x));//[1, 4, 6, 8]
        
        //查找索引    Arrays.binarySearch()    
        System.out.println(Arrays.binarySearch(x, 8));//3
        
        

}
}