More Problems

• Check if a 2D array is an identity matrix (diagonal elements are 1 and all other elements are 0).
• Find the number of rows and columns in a 2D array that contain only zeros.
• Check if an array of integers forms an arithmetic progression.
• Check if an array of integers forms a geometric progression.
• Find the sum of elements at odd indices in an array.
• Find the sum of elements at even indices in an array.
• Check if a given matrix is a lower triangular matrix.
• Check if a given matrix is an upper triangular matrix.