More Problems

• Find the number of elements that appear an odd number of times in an array.
• Find the number of elements that appear an even number of times in an array.
• Replace all prime numbers in an array with -1.
• Find the largest prime factor of each element in an array.
• Check if all elements in an array are perfect squares.
• Find the sum of all perfect square numbers in an array.
• Count how many times the minimum element appears in an array.
• Find the number of elements in an array that are divisible by their index.