More Problems

• Write a program to check if a string has balanced parentheses using a stack.
• Write a program to implement a basic online shopping application.
• Write a program to calculate the Fibonacci number at position n using dynamic programming.
• Write a program to find the first duplicate character in a string.
• Write a program to implement a simple version of the game Hangman.
• Write a program to find the frequency of elements in an array.
• Write a program to calculate the total marks of students and find the average.
• Write a program to check if a string is a valid hexadecimal color code.