Vector vec1(vec);//Vector vec1=vec这两种方式是等价的Vector vec2(vec.begin(),vec.end()); Vector vec3={1,2,3,4}; Vector vec4(10);//初始化数组的大小是10,value是0Vector vec5(10,1);//初始化数组的大小是10,value是1//二维矩阵的初始化vector<vector<int>> ans(12,vector<int>(10,0...
bool findTargetCore(TreeNode* root,unordered_set<int> &ans,int k){ if(root==NULL) return false; if(ans.find(k-root->val)!=ans.end()) return true; ans.insert(root->val); return findTargetCore(root->left,ans,k)||findTargetCore(root->right,ans,k); } }; 1. 2. 3. 4. 5. ...
vector<string> wordBreak(strings,unordered_set<string> &dict) {// Note: The Solution object is instantiated only once and is reused by each test case.intn = s.size();if(n ==0)returnvector<string> (0);vector<vector<int> > dp_prev(n+1,vector<int> (0));//dp_prev[k] has all ...
1#include<iostream>2#include<cstring>3#include<string>4#include<cstdio>5#include<cmath>6#include<queue>7#include<unordered_set>8#include<vector>9#definell long long10usingnamespacestd;1112constintN = 1e5 +10;1314intn, m, k;15intdeg[N];//度数16boolused[N];//队列内元素17unordered_set...
vector<vector<string>> findLadders(stringstart,stringend,unordered_set<string> &dict) { dict.insert(end); pre.clear(); len.clear();queue<string> q; q.push(start); len[start] =0;while(!q.empty()) {strings = q.front(), t = s;intd = len[s]; ...
hashtable是stl内一个非公开的类: 其是c++11中新加入的unorderedcontainer容器的底部实现。 包括:unordered_set...;d’ //每个字符对应的ASCII码乘以5加上下一个字符 当key为自定义类型时需要自己写hashfunc计算其hash值 hash在buckets vector中对应的位置: hash对 ...
intlongestConsecutive(vector<int>&nums) { if(nums.size()==0) return0; for(autoi:nums){ mp[i]=0;//加入key值,并初始化value } intans=0; for(autoi:nums){ if(ans<dfs(i)){ ans=dfs(i); } } returnans; } }; 1. 2.
#include<unordered_map> using namespace std; int main(){ unordered_map<int,int>mp; mp[5]=12; mp[4]=14; cout<<mp[5]<<' '<<mp[4]<<endl;//prints: 12 14 } Lets explain it more. How it works? Focus on unordered_set for simplify.You can imagine that it has vector of vector...
hashset_finetune(vis);for(inti=n;i>=1;i--){if(!vis[a[i]]){ lastpos[a[i]]=i; vis[a[i]]=1; } }intans=1;for(inti=1;i<=n;i++){intval=a[i];intmaxstep=lastpos[val];//pr(maxstep);for(intj=i;j<=maxstep;j++){ ...
unordered_set unordered_map → Reply omggg 5 years ago, # | 0 Using map<vector,int> mp; gives me TLE. I want to use Unordered_map to avoid TLE. How can i make it? Any help is appreciated. Thanks. Question : 1225D - Power Products My Submission : 77023902 neal Please help →...