pythonleetcode416.PartitionEqualSubsetSum

每个数都可以取或不取&＃xff0c;用字典存储已经尝试过的和

class Solution:def canPartition(self, nums):""":type nums: List[int]:rtype: bool"""sumn&＃61;sum(nums)if sumn&1&＃61;&＃61;1:return False else: return self.canFind(nums,sumn//2,0,len(nums),{})def canFind(self,nums,target,start,end,dict1):if target in dict1:return dict1[target]if target&＃61;&＃61;0:return True else:dict1[target]&＃61;Falsefor i in range(start,end):if self.canFind(nums,target-nums[i],i&＃43;1,end,dict1):return True return dict1[target]