Replacing two strings in a random matrix.

The program Swaps the lines Str1 and Str2 in a random matrix.
Programming language: Visual Basic.

Permutation of all elements of the array in ascending order.

The program builds all the elements of the array in ascending order.
Programming language: Visual Basic.

Finding prime numbers

The program finding prime numbers in the range specified by the user.
Programming language: FreePascal.

From binary to decimal

The program transforms the number from binary to decimal.
Programming language: FreePascal.

Computation of perfect numbers from 1 to 10000.

The program calculates and displays all perfect numbers in the range from 1 to 10000.
Programming language: FreePascal.