More Problems

• Write a program to check if a string is a valid binary number.
• Write a program to find the largest product of two adjacent numbers in an array.
• Write a program to implement a simple character frequency counter.
• Write a program to check if a number is an odd prime number.
• Write a program to find the longest substring of unique characters.
• Write a program to implement a basic online recipe application.
• Write a program to check if a string contains any whitespace characters.
• Write a program to find the sum of all even digits in a number.