More Problems

• Generate all possible combinations of a given string with a mix of uppercase and lowercase letters, ensuring distinct outputs.
• Find all unique palindromic substrings in a given string. Each substring should be a palindrome, and duplicates should be excluded.
• Print all combinations of k digits from a given n-digit number. Ensure that the output includes all unique combinations.
• Solve the Crossword Puzzle problem, filling in a grid based on given words and ensuring that all placements are valid.
• Find all possible paths in a binary tree from the root to leaves. Return the paths in a list, ensuring each path is unique.
• Generate all combinations of k items from a list of n items without replacement, ensuring no duplicate combinations in the output.
• Solve the Maze problem, determining if there exists a path from the start point to the endpoint, avoiding any walls or obstacles.
• Find all combinations of positive integers that sum to a given target. Each combination should be unique and properly formatted.