이슈 #368에서 솔루션 추가

Programmers/이진수_더하기.cpp

@@ -0,0 +1,24 @@
+#include <string>
+#include <vector>
+#include <algorithm>
+
+using namespace std;
+
+string solution(string bin1, string bin2) {
+    string result = "";
+    int carry = 0;
+    int i = bin1.length() - 1;
+    int j = bin2.length() - 1;
+
+    while(i >= 0 || j >= 0 || carry) {
+        int sum = carry;
+        if(i >= 0) sum += bin1[i--] - '0';
+        if(j >= 0) sum += bin2[j--] - '0';
+
+        result += to_string(sum % 2);
+        carry = sum / 2;
+    }
+
+    reverse(result.begin(), result.end());
+    return result;
+}