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KeyboardRow.cpp
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class Solution {
public:
void makeM1(map<char, bool>& m){
m['a'] = true;
m['A'] = true;
m['s'] = true;
m['S'] = true;
m['d'] = true;
m['D'] = true;
m['f'] = true;
m['F'] = true;
m['g'] = true;
m['G'] = true;
m['h'] = true;
m['H'] = true;
m['j'] = true;
m['J'] = true;
m['k'] = true;
m['K'] = true;
m['l'] = true;
m['L'] = true;
}
void makeM2(map<char, bool>& m){
m['q'] = true;
m['Q'] = true;
m['w'] = true;
m['W'] = true;
m['e'] = true;
m['E'] = true;
m['r'] = true;
m['R'] = true;
m['t'] = true;
m['T'] = true;
m['y'] = true;
m['Y'] = true;
m['u'] = true;
m['U'] = true;
m['i'] = true;
m['I'] = true;
m['o'] = true;
m['O'] = true;
m['p'] = true;
m['P'] = true;
}
void makeM3(map<char, bool>& m){
m['z'] = true;
m['Z'] = true;
m['x'] = true;
m['X'] = true;
m['c'] = true;
m['C'] = true;
m['v'] = true;
m['V'] = true;
m['b'] = true;
m['B'] = true;
m['n'] = true;
m['N'] = true;
m['m'] = true;
m['M'] = true;
}
bool belongsToOne(string s, map<char, bool> m1, map<char, bool> m2, map<char, bool> m3){
if(s.size() == 0){
return true;
}
if(m1.find(s[0]) != m1.end()){
for(int i = 1; i < s.size(); i++){
if(m1.find(s[i]) == m1.end()){
return false;
}
}
}
else if(m2.find(s[0]) != m2.end()){
for(int i = 1; i < s.size(); i++){
if(m2.find(s[i]) == m2.end()){
return false;
}
}
}
else if(m3.find(s[0]) != m3.end()){
for(int i = 1; i < s.size(); i++){
if(m3.find(s[i]) == m3.end()){
return false;
}
}
}
return true;
}
vector<string> findWords(vector<string>& words) {
vector<string> sol;
map<char, bool> m1;
map<char, bool> m2;
map<char, bool> m3;
makeM1(m1);
makeM2(m2);
makeM3(m3);
for(int i = 0; i < words.size(); i++){
if(belongsToOne(words[i], m1, m2, m3)){
sol.push_back(words[i]);
}
}
return sol;
}
};