More Problems

• Write a program to calculate the sum of the first n perfect squares.
• Implement a function to check if a number can be expressed as a sum of two squares.
• Create a program to find the longest palindromic substring in a string.
• Write a program to check if a number is a Fibonacci number.
• Implement a function to compute the sum of the digits of a number.
• Create a program to find the maximum product of any two integers in an array.
• Write a program to determine if two strings are anagrams.
• Implement a function to calculate the sum of the digits of a number until it is a single digit.