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// 67. Add Binary
#include "leetcode.h"
class Solution {
public:
string addBinary(string a, string b) {
int i = a.size() - 1, j = b.size() - 1, carry = 0;
string ans;
while (i >= 0 || j >= 0 || carry) {
if (i >= 0) {
carry += a[i] - '0';
i--;
}
if (j >= 0) {
carry += b[j] - '0';
j--;
}
ans += (carry % 2 + '0');
carry /= 2;
}
reverse(ans.begin(), ans.end());
return ans;
}
};
int main() {
Solution obj;
cout << obj.addBinary("11", "1") << endl; // expect: 100
cout << obj.addBinary("1010", "1011") << endl; // expect: 10101
}
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