More Problems

• Write a program to find the longest substring that contains at most two distinct characters.
• Write a program to implement the Trie data structure for efficient prefix matching.
• Write a program to check if a given string can be rearranged to form a palindrome.
• Write a program to implement a basic online news aggregator.
• Write a program to find the longest path in a weighted graph using dynamic programming.
• Write a program to implement the Ford-Fulkerson method for computing maximum flow in a flow network.
• Write a program to check if a given string is a valid parentheses expression using a stack.
• Write a program to find the largest sum of any contiguous subarray using dynamic programming.