More Problems

• Find all combinations of k elements from a given array of n elements without repetition.
• Generate all valid combinations of parentheses for n pairs of parentheses, ensuring each combination is balanced.
• Solve the Sudoku problem for a 9x9 grid by finding all valid arrangements of numbers from 1 to 9.
• Print all unique subsets of an array that may contain duplicate elements, ensuring no duplicate subsets are returned.
• Find all unique palindromic substrings in a given string, with each substring counted only once.
• Solve the "Word Search II" problem by finding all words in a grid that are present in a given dictionary.
• Generate all possible ways to color a graph with k colors such that no two adjacent vertices share the same color.
• Solve the "Combination Sum" problem by finding all unique combinations of numbers that sum to a target value.