Prg 2 EN - 20.02.2023
2. Exercise

0. Create Hello world code in Visual Studio

1. Create a init int var i to value 7 and print to console; 
1.1 Change var i to value 8 and print to console
1.2 Print i,j var on console

- co se stane kdyz pristoupim (print) k neinicializovane hodnote
- int over flow; no exception?

1.3 How long is long int in Python vs C#?
1.4 Basic types of variables - programiz

3. Arrays - 1D: declare, create, init, access; iterate array for and foreach loop; outOfBoundaries exception

4. Functions

3.2 Ex: write function that count average value of given array
* static vs new class
* explicit retype from int division to flout - different results

5. Array - 2D: declare, create, init, access; iterate array for and foreach loop

5.2 Write the function reshape that:
- reshape 1D array to 2D array
- reads int 1D array and int k value, and reshape 1D array to 2D array with k colomns
(assume: 1D array length is l=n*k; that means l is dividable by the k)

* int[ , ] reshape(int[] arr, int k)
* 1D arr -> 2D resp. int[] -> int[,]

* example: k=3; arr = {1,2,3,4,5,6} 
reshape to the 2D array arr2D = {{1,2,3},{4,5,6}}

5.3 reshapeJagged(int[] arr, int[] rowsLenght) 
- modification of neshape function that create jugged array given lengths (value k is replaced with array of lengths of rows)
(assume: rowLength_1 + rowLength_2 + rowLength_3 = arr.Length)