Create 3x3 2D array, fill it with random numbers, and calculate the main diagonal summation, then print it.

Problem 2: Strings

Louise joined a social networking site to stay in touch with her friends. The signup page required her to input a name and a password. However, the password must be strong. The website considers a password to be strong if it satisfies the following criteria:

• Its length is at least 6.
• It contains at least one digit.
• It contains at least one lowercase English character.
• It contains at least one uppercase English character.
• It contains at least one special character. The special characters are: !@#$%^&*()-+

She typed a random string of length N in the password field but wasn't sure if it was strong. Given the string she typed, can you find if the password is a strong password or not?

Note: Here's the set of types of characters in a form you can paste in your solution:

numbers="0123456789"

lower_case="abcdefghijklmnopqrstuvwxyz"

upper_case="ABCDEFGHIJKLMNOPQRSTUVWXYZ"

special_characters="!@#$%^&*()-+"