More Problems

• Implement a function to check if a number is a perfect digital invariant.
• Create a program to calculate the sum of numbers divisible by 7 up to n.
• Write a program to find the sum of the first n Fibonacci numbers.
• Implement a function to find the maximum of three numbers.
• Create a program to check if a given number can be expressed as a sum of two squares.
• Write a program to calculate the area of a circle using the radius.
• Implement a function to find the count of unique characters in a string.
• Create a program to calculate the Fibonacci of a number using dynamic programming.