Problem
1. Write an assignment statement to place an "x" in the upper-right corner of the tic-tac-toe board in Self Check 36.
2. Which elements are on the diagonal joining the upper-left and the lower-right corners of the tic-tac-toe board in Self Check 36?
3. Declare an array list primes of integers that contains the first five prime numbers (2, 3, 5, 7, and 11).