feat(ko): add the Korean online edition (#2006)

* feat(ko): add the complete Korean online edition

* Use UTF-8 for Python CI output on Windows

* Remove print-book promotion from the Korean site

* fix(ko): preserve emphasis before Korean particles

ko/codes/cpp/chapter_hashing/simple_hash.cpp

@@ -0,0 +1,66 @@
+/**
+ * File: simple_hash.cpp
+ * Created Time: 2023-06-21
+ * Author: krahets ([email protected])
+ */
+
+#include "../utils/common.hpp"
+
+/* 덧셈 해시 */
+int addHash(string key) {
+    long long hash = 0;
+    const int MODULUS = 1000000007;
+    for (unsigned char c : key) {
+        hash = (hash + (int)c) % MODULUS;
+    }
+    return (int)hash;
+}
+
+/* 곱셈 해시 */
+int mulHash(string key) {
+    long long hash = 0;
+    const int MODULUS = 1000000007;
+    for (unsigned char c : key) {
+        hash = (31 * hash + (int)c) % MODULUS;
+    }
+    return (int)hash;
+}
+
+/* XOR 해시 */
+int xorHash(string key) {
+    int hash = 0;
+    const int MODULUS = 1000000007;
+    for (unsigned char c : key) {
+        hash ^= (int)c;
+    }
+    return hash & MODULUS;
+}
+
+/* 회전 해시 */
+int rotHash(string key) {
+    long long hash = 0;
+    const int MODULUS = 1000000007;
+    for (unsigned char c : key) {
+        hash = ((hash << 4) ^ (hash >> 28) ^ (int)c) % MODULUS;
+    }
+    return (int)hash;
+}
+
+/* 실행 코드 */
+int main() {
+    string key = "Hello 算法";
+
+    int hash = addHash(key);
+    cout << "덧셈 해시값: " << hash << endl;
+
+    hash = mulHash(key);
+    cout << "곱셈 해시값: " << hash << endl;
+
+    hash = xorHash(key);
+    cout << "XOR 해시값: " << hash << endl;
+
+    hash = rotHash(key);
+    cout << "회전 해시값: " << hash << endl;
+
+    return 0;
+}