More Problems

• Write a program to check if two strings can be rearranged to form the same string.
• Write a program to find the maximum product of three numbers in an array.
• Write a program to check if a string is a valid time in the format HH
• Write a program to implement a basic stack data structure using linked lists.
• Write a program to calculate the sum of the first n perfect cubes.
• Write a program to check if a number is a perfect number using the sum of its proper divisors.
• 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.