More Problems

• Find all unique combinations of k numbers from a given array of n numbers. Ensure that the output contains no duplicates.
• Solve the Combination Sum problem, where you need to find all unique combinations of numbers that sum up to a target value.
• Print all valid parenthesis sequences for n pairs of parentheses, ensuring that each sequence is correctly formed and valid.
• Generate all possible arrangements of k distinct items chosen from a set of n distinct items, including all unique orderings.
• Find all unique paths in a grid where you can only move down or right. Return the number of distinct paths to reach the end.
• Solve the Word Search problem where you must find all instances of a word in a 2D grid of characters. Ensure no duplicates.
• 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.