151009

//数组
                         int myarry[] = new int [5];
                         
                         //初始化
                         int[] sh = {1,2,3};
                         
                         //索引是从0开始
                         
                         myarry[0] = 100;
                         myarry[2] = 200;
                         myarry[4] = 400;
                         
                         //初始化数组
                         
                         int my[] = new int[]{0,1,2,3,4};
                         for (int g = 0; g < myarry.length; g++)
                         {
                             System.out.println("myarry = " + myarry[g]);
                         }
                         
                         char[] csz = new char[5];
                         
                         csz[0] =  'g';
                         
                         double[] dsz = {1,2,3};
                         
                         long lsz[] = new long[]{1,3,5,2};
                         
                         long l = lsz[2];
                         
                         //操作数组
                         Arrays.sort(lsz);//排序
                         
                         //遍历
                         
                         int n = 0;
                         while(n < lsz.length)
                         {
                             System.out.println(" lsz{" + n + "] = " + lsz[n]);
                             n++;
                         }
                         
                         //复制数组
                         long[] lsz2 = lsz;
                         
                         long[] lsz3 = Arrays.copyOf(lsz,2);
                         
                         long[] lsz4 = Arrays.copyOfRange(lsz, 1, 3);
                         
                         //查询数组,返回索引值
                         System.out.println("'8的索引位置 ="+Arrays.binarySearch(lsz, 8)) ;
                         
                         //填充
                         Arrays.fill(lsz2, 2);
                         
                         Arrays.fill(lsz3, 1,3,8);
                         
                         //foreach语句
                         
                         for(double d : dsz)
                         {
                             System.out.println("d = " + d);
                         }
                         
                         //二维数组
                         int[][] ewsz = new int[2][3];
                         
                         ewsz[0] = new int[]{1,2,3};
                         ewsz[1] = new int[]{4,5,6};
                         
                         System.out.println("ewsz = " + ewsz[1][2]);
                         
                         System.out.println("ewsz = " + ewsz.length);
                         
                         for(int[] ie : ewsz)
                         {
                             for(int f : ie)
                             {
                                 System.out.print( f + " ");
                             }
                             
                             System.out.println();
                         }
                         
                         for(int m = 0;m < ewsz.length; m++)//ewsz.length  数组的长度，其实就是行数长度
                         {
                             for(int k = 0;k < ewsz[m].length; k++)//ewsz[m].length 数组里面的长度 相当于列数长度
                             {
                                 System.out.print(ewsz[m][k]+" ");
                             }
                             System.out.println();
                         }
//冒泡排序
        
        int[] sz = {23,12,56,97,19,30,7,21};
        
        for(int i : sz)
        {
            System.out.print(i + ",");
        }
        
        System.out.println();
        
        
        for (int j = 1; j < sz.length; j++)
        {
        for(int i = 0; i < sz.length - 1; i++)
            
            //改变排序方式
        {
            if(sz[i] > sz[i + 1])
            {
                int t = sz[i + 1];
                
                sz[i + 1] = sz[i];
                
                sz[i] = t;
            }
        }
        for(int i : sz)
        {
            System.out.print(i+ ",");
        }
        System.out.println();
        }