More Problems

• Write a program to find the sum of the first n triangular numbers.
• Write a program to implement the counting sort algorithm.
• Write a program to check if a binary tree is a valid binary search tree.
• Write a program to find the longest common suffix between two strings.
• Write a program to implement a basic online shopping application with user reviews.
• Write a program to check if a number is a Fibonacci number using recursion.
• Write a program to find the longest substring of unique characters using a sliding window approach.
• Write a program to implement a basic online voting system with candidate tracking.