13-3

package array;
 
public class SelectNum {
    int maxn;
    int min;
    public SelectNum(){     }
    public void minValue(int[] arr){
        maxn =arr[0];
        min =arr[0];
        for(int e: arr){
            if(e>maxn){
                maxn = e;
            }
            if(e<min){
                min = e;
            }
        }
    }
    
    public void showNum()
    {
        System.out.println("최대값: "+maxn+"\n최소값: "+min);
    }
}

package array;
 
public class Array1303 {
    public static void main(String[] args)
    {
        int[] arr1= {4,2,6,3,9,1,4};
        
        SelectNum s = new SelectNum();
        
        s.minValue(arr1);
        s.showNum();
    }
 
}