5: 2D Arrays

In the first line there is given one number n. This number is the number of rows and the number of columns in the table. In the following n rows there are given n numbers in each row.
Write a program to calculate and output the sum of all numbers given in the table.

Given the size of the table n.
Write a program to create a snake table of size n.
For example, if the size of the table is 4, the output should be the following:

1 2 3 4
8 7 6 5
9 10 11 12
16 15 14 13


It is possible to solve this problem with and without 2D array. Try both ways.

In the first line given the number of rows in the table n and the number of columns in the table m. The following n lines contain m numbers each.
The table is filled with numbers from 1 to n*m. Write a program to rotate the table by 90 degrees to the right.
For example, if n = 3 and m = 7, the original table is:

1 2 3 4 5 6 7
8 9 10 11 12 13 14
15 16 17 18 19 20 21


The rotated table should be the following:

15 8 1
16 9 2
17 10 3
18 11 4
19 12 5
20 13 6
21 14 7


Write a program to print the original and the rotated table. Leave an empty line between the two tables.

In the first line there is given one number n. This number is the number of rows and the number of columns in the table. In the following n rows there are given n numbers in each row.
The last column and the last row are the control column, row. I.e. they contain the sums of the corresponding columns, rows.
An error (i.e. exactly one error) might have been made in one of table cells. Write a program to test this. If the table contains no errors, output "CORRECT". If an error was made, output the number of the row and the column of the cell with incorrect data. The rows are numbered from top, the columns are numbered from left to right. For example, if input is the following:

4
1 2 5 8
8 5 4 12
3 0 4 7
7 7 13 27


the output should be

2 1