螺旋矩阵输出

private static void PrintMatrix(){
        //region 使用随机数构建矩阵（二维数组）
        long seed=System.currentTimeMillis();
        Random objRandom = null;
        int arrLength=4;
        int maxNumber=100;
        int[][] arr=new int[arrLength][arrLength];
        for(int i=0;i<arrLength;i++){
            for(int j=0;j<arrLength;j++){
                int tempNum =0;
                while (tempNum==0){
                    objRandom = new Random(seed);
                    tempNum = objRandom.nextInt(maxNumber);
                    if(tempNum==0){
                        seed=System.currentTimeMillis();
                    }
                }
                seed=seed+tempNum;
                arr[i][j]=tempNum;
            }
        }
        //endregion

        //region 输出矩阵（二维数组）
        System.out.print("\r\n");
        System.out.print("\r\n");
        for(int i=0;i<arrLength;i++){
            System.out.print("\t");
            for(int j=0;j<arrLength;j++){
                 System.out.print(arr[i][j]);
                 System.out.print("\t");
            }
            System.out.print("\r\n");
        }
        System.out.print("\r\n");
        System.out.print("\r\n");
        //endregion

        //region 螺旋输出矩阵内容
        int up,down,left,right;
        up=0;
        down=arrLength-1;
        left=0;
        right=arrLength-1;

        boolean s1=false,s2=false;
        while (true){
            //从左往右
            if(left<=right){
                for(int i=left;i<=right;i++){
                    System.out.print(arr[up][i]+"\t");
                }
                up++;
            }else{
                s1=true;
                up++;
            }

            //从上往下
            if(up<=down){
                for(int i=up;i<=down;i++){
                    System.out.print(arr[i][right]+"\t");
                }
                right--;
            }else{
                s2=true;
                right--;
            }


            //从右往左
            if(left<=right){
                for(int i=right;i>=left;i--){
                    System.out.print(arr[down][i]+"\t");
                }
                down--;
            }else{
                s1=true;
                down--;
            }

            //从下往上
            if(up<=down){
                for(int i=down;i>=up;i--){
                    System.out.print(arr[i][left]+"\t");
                }
                left++;
            }else{
                s2=true;
                left++;
            }

            if(s1==true && s2==true){
                break;
            }
        }
        //endregion
    }