1 遍历int类型二维数组

public static void printErIntArray(int[][] matrix){

        for (int i = 0; i < matrix.length; i++) { //this equals to the row in our matrix.
            for (int j = 0; j < matrix[i].length; j++) { //this equals to the column in each row.
                System.out.println(matrix[i][j] + " ");
            }
//            System.out.println("/t"); //change line on console as row comes to end in the matrix.
        }
    }
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2 使用流遍历int 类型二维数组

 public static void printErIntArrayByStream(int[][] iDim) {
        Arrays.stream(iDim).forEach(i -> {
            Arrays.stream(i).forEach(n -> System.out.println(n));
            System.out.println();
        });

    }
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3 遍历 float 类型二维数组

public static void printErFloatArray(float[][] matrix){

    for (int i = 0; i < matrix.length; i++) { //this equals to the row in our matrix.
        for (int j = 0; j < matrix[i].length; j++) { //this equals to the column in each row.
            System.out.println(matrix[i][j] + " ");
        }
//            System.out.println("/t"); //change line on console as row comes to end in the matrix.
    }
}
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4 遍历 double 类型二维数组

public static void printErDoubleArrayByStream(double[][] matrix){
    Arrays.stream(matrix).forEach(i -> {
        Arrays.stream(i).forEach(n -> System.out.format(Locale.US,"%.2f ", n));
        System.out.println();
    });
}
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5 遍历 int 类型 3维数据

  public static void printThreeIntArray(int[][][] arr){
        for(int i=0;i<arr.length;i++) {
            for(int j=0;j<arr[i].length;j++) {        //我们可以把前边想像成一个一维数组
                if(j==arr[i].length-1) {
                    System.out.println();            //换行
                }
                for(int k=0;k<arr[i][j].length;k++)
                    System.out.print(arr[i][j][k]+" ");//遍历三维数组
            }
        }


    }
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6 遍历 Float 类型 3维数据

    public static void printThreeFloatArray(float[][][] arr){
        for(int i=0;i<arr.length;i++) {
            for(int j=0;j<arr[i].length;j++) {        //我们可以把前边想像成一个一维数组
                if(j==arr[i].length-1) {
                    System.out.println();            //换行
                }
                for(int k=0;k<arr[i][j].length;k++)
                    System.out.print(arr[i][j][k]+" ");//遍历三维数组
            }
        }
    }
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