More Problems

• Find the sum of all odd-indexed composite numbers in an array.
• Find the product of all prime numbers in each column of a 2D matrix.
• Find the row in a 2D matrix where the sum of all elements is odd.
• Find the column in a 2D matrix where the sum of all elements is even.
• Check if an array can be rearranged to form a palindrome.
• Check if the product of all elements in a 2D matrix is greater than the sum of all elements.
• Find the largest element in each row of a 2D matrix that is smaller than the diagonal element.
• Find the longest subarray where all elements are less than a given number k.