Backtracking for Combination Sum, Combination Sum II, and Palindrome Partitioning
39. Combination Sum
Problem: https://leetcode.cn/problems/combination-sum/description/
Find all unique combinations of candidates where the chosen numbers sum to target. The same number may be used a unlimited number of times.
class Solution {
public:
vector<vector<int>> combinationSum(vector<int>& candidates, int targ ...
Posted on Sun, 10 May 2026 15:26:59 +0000 by Jedi Legend