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Copy pathWordPattern.cpp
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90 lines (73 loc) · 2 KB
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#include <iostream>
#include <string>
#include <sstream>
#include <algorithm>
#include <iterator>
#include <unordered_map>
using namespace std;
class Solution {
public:
bool wordPattern(string pattern, string str) {
unordered_map<char, string> map_;
unordered_map<string, char> rmap;
istringstream iss(str);
vector<string> tokens{istream_iterator<string>{iss},
istream_iterator<string>{}};
if(pattern == "" && str == "") return true;
if(pattern == "" && str != "") return false;
if(pattern != "" && str == "") return false;
int i ;
for( i = 0; i < tokens.size(); i++){
char meta = pattern[i];
if(map_.find(meta) != map_.end()){
string data_ = map_[meta];
if(data_ != tokens[i]) return false;
}else{
map_[meta] = tokens[i];
}
if(rmap.find(tokens[i]) != rmap.end()){
char _c = rmap[tokens[i]];
if(_c != meta) return false;
}else{
rmap[tokens[i]] = meta;
}
}
if(i < pattern.length()) return false;
return true;
}
};
int main(int argc, char const *argv[])
{
Solution s;
{
string pattern = "abba";
string str = "dog cat cat dog";
cout<< s.wordPattern(pattern, str) << endl;
}
{
string pattern = "abba";
string str = "dog cat cat fish";
cout<< s.wordPattern(pattern, str) << endl;
}
{
string pattern = "aaaa";
string str = "dog cat cat dog";
cout<< s.wordPattern(pattern, str) << endl;
}
{
string pattern = "abba";
string str = "dog dog dog dog";
cout<< s.wordPattern(pattern, str) << endl;
}
{
string pattern = "jquery";
string str = "jquery";
cout<< s.wordPattern(pattern, str) << endl;
}
{
string pattern = "";
string str = "beef";
cout<< s.wordPattern(pattern, str) << endl;
}
return 0;
}