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777.cpp
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777.cpp
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class Solution {
public:
bool canTransform(string start, string end) {
int startR = 0;
int startL = 0;
int startX = 0;
int endR = 0;
int endL = 0;
int endX = 0;
string startClean = "";
string endClean = "";
int n = start.size();
for (int i = 0; i < n; ++i) {
if (start[i] == 'R') {
startR++;
startClean.push_back('R');
}
else if (start[i] == 'L') {
startL++;
startClean.push_back('L');
}
else if (start[i] == 'X') startX++;
if (end[i] == 'R') {
endR++;
endClean.push_back('R');
}
else if (end[i] == 'L') {
endL++;
endClean.push_back('L');
}
else if (end[i] == 'X') endX++;
if (endR > startR) return false;
if (endL < startL) return false;
}
if (startR != endR || startL != endL || startX != endX) return false;
if (startClean != endClean) return false;
return true;
}
};