More Problems

• Write a program to check if a number is a Harshad number using its digits.
• Write a program to find the longest contiguous subsequence with a given sum.
• Write a program to implement a simple online polling system with results tracking.
• Write a program to check if a string is a valid base64 encoded string.
• Write a program to find the maximum sum path in a triangle of numbers.
• Write a program to implement the Fibonacci heap data structure.
• Write a program to check if two graphs are isomorphic using adjacency lists.
• Write a program to find the maximum depth of a binary tree using recursion.