More Problems

• 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.
• Find the number of elements in an array that are divisible by a given number k.
• Check if the sum of all elements in an array is even.