c++判断是否是utf-8编码

#include

using namespace std;

class Solution {

public:

bool validUtf8(vector& data) {

int cnt = 0;

for(int i = 0; i

int x = data[i];

if(!cnt){

if((x >> 5) == 0b110){

cnt = 1;

}

else if((x >> 4) == 0b1110){

cnt = 2;

}

else if((x >> 3) == 0b11110){

cnt = 3;

}

else if((x >> 7) != 0) return false;

} else {

if((x >> 6) != 0b10) return false;

cnt--;

}

}

return cnt == 0;

}

};

main(){

Solution ob;

vector v = {197,130,1};

cout << (ob.validUtf8(v));

}