More Problems

• Find the sum of all elements at even indices in a 2D matrix.
• Find the maximum sum of any k consecutive elements in a 2D matrix.
• Find the product of all elements at the boundary of a 2D matrix.
• Find the row in a 2D matrix where all elements are prime numbers.
• Check if the sum of the elements in a 2D matrix is a multiple of a given number.
• Check if the product of all elements in an array is a multiple of the length of the array.
• Find the second largest prime number in an array.
• Find the second smallest composite number in an array.