More Problems

• Write a program to check if a string is a valid hexadecimal number.
• Write a program to find the longest consecutive sequence of integers in an array.
• Write a program to implement a basic online quiz application with scoring.
• Write a program to check if a number is an even perfect number.
• Write a program to find the maximum frequency of any character in a string using a hash table.
• Write a program to calculate the total marks of students and find the average.
• Write a program to implement a basic employee management system.
• Write a program to check if a string is a valid email address using regex.