More Problems

• Find the product of the diagonal elements of a 2D matrix.
• Find the sum of elements in the first column of a 2D matrix.
• Find the largest element in the first row of a 2D matrix.
• Count how many elements in an array are prime numbers.
• Replace all negative elements in an array with their absolute value.
• Check if an array contains both positive and negative numbers.
• Find the index of the smallest element in an array.
• Find the index of the largest element in an array.