qq_20161391的博客

核心思想 同时也是我们需要实现的目标

class Solution { public: int jumpFloorII(int number) { return 1<<(number-1); } }; 题目：变态跳台阶 题目讲解：https://www.nowcoder.com/questionTerminal/22243d016f6b47f2a6928b4313c85387...

class Solution { public: int numDistinct(string s, string t) { int ssize = s.size(), tsize = t.size(); if(ssize < tsize) return 0; vector<vector<lon...