More Problems

• Write a program to implement a simple online shopping application with user login.
• Write a program to find the first unique character in a string using a hash map.
• Write a program to check if a number is a Fibonacci number using a function.
• Write a program to implement a basic online restaurant reservation system.
• Write a program to check if two strings can be made anagrams with a limited number of character changes.
• Write a program to find the longest consecutive sequence of elements in an array.
• Write a program to check if a string is a valid binary number.
• Write a program to implement a simple game of Tic-Tac-Toe.