Problem: Combination Sum
Explore how to apply recursion with backtracking to find all unique combinations of numbers from a distinct integer array that sum to a target value. Understand pruning techniques and how sorting helps optimize the search by eliminating impossible paths. This lesson guides you through implementing a recursive solution in Java to effectively tackle combination sum problems.
We'll cover the following...
Statement
Given an array of distinct integers candidates and a target integer target, return all unique combinations of numbers from candidates that sum up to target. The combinations may be returned in any order.
Each number in candidates may be selected an unlimited number of times. Two combinations are considered unique if they differ in the frequency of at least one chosen number.
Constraints:
candidates.lengthcandidates[i]All elements of
candidatesare distinct.target...