"word matching from a subsequence" Code Answer's
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word matching from a subsequence
Mukul Taneja
on Feb 22, 2021
#include <bits/stdc++.h>
using namespace std;
class Solution {
public:
int numMatchingSubseq(string S, vector<string>& words) {
int n = words.size();
map <char, vector <string> > m;
for(int i = 0; i < words.size(); i++){
m[words[i][0]].push_back(words[i]);
}
int ans = 0;
for(int i = 0; i < S.size(); i++){
char x = S[i];
if(m.find(x) != m.end()){
vector <string> temp = m[x];
m.erase(x);
for(int j = 0; j < temp.size(); j++){
if(temp[j].size() == 1){
ans++;
} else {
m[temp[j][1]].push_back(temp[j].substr(1));
}
}
}
}
return ans;
}
};
int main() {
Solution ob1;
string s = "abcde";
vector<string> v{"a","bb","acd","ace"};
cout << ob1.numMatchingSubseq(s, v) << endl;
return 0;
}Source: www.tutorialspoint.com
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