More Problems

• Write a program to check if a binary tree is a complete binary tree.
• Write a program to find the longest common prefix among an array of strings using a trie.
• Write a program to implement a basic file encryption utility using XOR cipher.
• Write a program to check if a number can be expressed as the sum of three cubes.
• Write a program to find the largest rectangle that can be formed in a histogram.
• Write a program to implement a simple online shopping application with payment processing.
• Write a program to check if a string is a valid Anagram using character counting.
• Write a program to find the longest increasing subsequence using patience sorting.