More Problems

• Check if an array is made up of all prime numbers.
• Count the number of elements in an array that are both prime and divisible by 3.
• Find the number of subarrays whose sum equals a given number k.
• Find the sum of all elements in the odd rows of a 2D matrix.
• Find the sum of all elements in the even columns of a 2D matrix.
• Find the difference between the maximum and minimum elements in each row of a 2D array.
• Find the largest element in a 2D matrix that is smaller than the diagonal elements.
• Replace all elements in a 2D matrix that are smaller than the diagonal elements with zero.