Helene1996的博客

题解法一 dfsclass Solution { private int res = 0; public int findTargetSumWays(int[] nums, int target) { if(nums.length==0) return 0; dfs(nums,0,target,0); return res; } private void dfs(int[] nums,int index,int targe

java.io.InvalidClassException: xxx.Xxxx; local class incompatible: stream classdesc serialVersionUID = 3131289854159272837, local class serialVersionUID = 718464469340458400 at java.io.ObjectStre