More Problems

• 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.
• Write a program to determine if a number is a Smith number.
• Implement a function to count the number of digits in a string representation of a number.
• Create a program to calculate the factorial of a number using a stack.
• Write a program to check if a number is a Peterson number.
• Implement a function to find the harmonic mean of a set of numbers.
• Create a program to find the number of combinations of n items taken k at a time.