More Problems

• Write a program to check if a string is a valid palindrome using recursion.
• Write a program to find the first unique character in a string using a hash map.
• Write a program to implement a basic game of Chess.
• Write a program to check if a number is a happy number using a set.
• Write a program to calculate the factorial of a number using a loop.
• Write a program to implement a simple text-based quiz application with scoring.
• Write a program to check if a string contains balanced square brackets.
• Write a program to find the longest palindrome substring in a string.