More Problems

• Check if an array is sorted in both ascending and descending orders.
• Find the index of the largest prime number in an array.
• Find the index of the smallest composite number in an array.
• Check if the sum of the diagonal elements in a 2D matrix is odd.
• Check if the sum of the diagonal elements in a 2D matrix is even.
• Find the number of prime numbers in each column of a 2D matrix.
• Find the number of perfect squares in each row of a 2D matrix.
• Check if an array contains only odd-indexed prime numbers.