07_05_2d_array_navigation

Description

Implement 2D array functions in twod.h file, you should call functions in array_functions.h to make 2D array functions clean.

Initliaze Matrix

Create int sizes[ROWS]={0}; to hold the num_used for each row.
Fill out the sizes array by generating random numbers from 0 to CAPACITY.
Fill out rows of matrix by generating random numbers from 0 to 99 according to sizes array.

We call step 3 is RANDOM NUMBER OF RANDOM NUMBERS.

For tests use:

int sizes[ROW_SIZES] = {10, 1, 9, 10, 5, 9, 1, 4, 0, 9, 3, 1};
a[i][j] = i + j;

Note

The user will use the number pad keys or keyboard keys [4/G]left [6/J]right [8/Y]up [2/N]down [7/H]ome(0,0) [1/E]nd(last,last) [M]ove_cursor to move around the array. Implementing diagonal keys would be pretty cool too but not a requirement.
The user can do insert_before, insert_after, append a number on the current row.
The user can add random number to the end of row.
The user can delete the cursor's cell.
The user can search the entire matrix for an item and have the cursor rest on that item if found the item.
The user can reverse, delete_repeated and sort in ascending or descending order on ALL rows..

Solution

main() function

Declares major variables: the 2D integer array, row, column, etc.
Contains a loop that takes commands and calls appropriate functions: Cursor movements, Insert, Append, Delete, Random, etc.
Call display_matrix after every iteration of the loop

Important parameter

I pass sizes[row] to the append, insert and delete functions passed by reference. sizes[row] means how many numbers in each row are saved into an int array.

Cursor

Is implemented using two integers. Let's call them row and col
Row and col stay within the range 0 ~ MaxRows and 0 ~ num_used in the current row.
If there are no elements in that row, I set the col to -1 (this flags the deal with the cursor on an empty row)
Move the cursor by incrementing and decrementing row and col

Function display_matrix

Print cursor position and num_used for current row.
If the cursor is on a given row, just print out array.
If the row you are printing with the cursor on this row print bracket on the item.
If the row has no items, it will have a col of -1, just print a "[:]" at the start of the line.