39. Combination Sum
public class Solution {
public List<List<Integer>> combinationSum(int[] candidates, int target) {
List<List<Integer>> ret=new ArrayList<List<Integer>>();
Arrays.sort(candidates);
generateCombination(new ArrayList<Integer>(), 0, ret, candidates, target);
return ret;
}
private void generateCombination(List<Integer> list, int idx, List<List<Integer>> combs, int[] candidates, int target){
if(target==0)
{
combs.add(new ArrayList<Integer>(list));
return;
}
if(target<0||idx>=candidates.length)
return;
generateCombination(list, idx+1, combs, candidates, target);
list.add(candidates[idx]);
generateCombination(list, idx, combs, candidates, target-candidates[idx]);
list.remove(list.size()-1);
}
}
转载于//www.cnblogs.com/asuran/p/7584309.html
还没有评论,来说两句吧...