Java数组的基本操作

public class Array1 {
    public static void main(String[] args) {
        int [] num={1,2,3,4,5};
        System.out.println("原数组为");
        for(int i=0;i
           if(i==num.length-1){
               System.out.println(num[i]);
           }
           else {
               System.out.print(num[i]);
           }
        }
        System.out.println("---------------");
        //比较最值
        int max=-1,min=9999;
        for(int i=0;i            if(num[i]>max){
                max=num[i];
            }
            if(num[i]                min=num[i];
            }
        }
        System.out.println("最大值为："+max+"  最小值为："+min);
        //求和
        int sum=0;
        for(int i=0;i          sum+=num[i];
        }
        System.out.println("数组元素之和为"+sum);

        //反转数组
        int []reserve=new int[5];
        int x=num.length-1;
        for(int j=0;j            reserve[j]=num[x];
            x--;
        }
        System.out.println("反转后的数组为");
         print(reserve);
        System.out.println("\n");
         //二维数组
        System.out.println("二维数组为");
        int[][] doub={{1,2},{2,3},{3,4},{4,5}};
        for(int i=0;i            for(int j=0;j                System.out.print(doub[i][j]);
            }
        }

    }
    //定义方法
    public static  void print(int[] a){
        for(int i=0;i            System.out.print(a[i]);}
    }
}