Added task 3374

src/main/java/g3301_3400/s3374_first_letter_capitalization_ii/readme.md

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+3374\. First Letter Capitalization II
+
+Hard
+
+SQL Schema
+
+Table: `user_content`
+
+    +-------------+---------+
+    | Column Name | Type    |
+    +-------------+---------+
+    | content_id  | int     |
+    | content_text| varchar |
+    +-------------+---------+
+content_id is the unique key for this table. Each row contains a unique ID and the corresponding text content. 
+
+Write a solution to transform the text in the `content_text` column by applying the following rules:
+
+*   Convert the **first letter** of each word to **uppercase** and the **remaining** letters to **lowercase**
+*   Special handling for words containing special characters:
+    *   For words connected with a hyphen `-`, **both parts** should be **capitalized** (**e.g.**, top-rated → Top-Rated)
+*   All other **formatting** and **spacing** should remain **unchanged**
+
+Return _the result table that includes both the original `content_text` and the modified text following the above rules_.
+
+The result format is in the following example.
+
+**Example:**
+
+**Input:**
+
+user\_content table:
+
+    +------------+---------------------------------+
+    | content_id | content_text                    |
+    +------------+---------------------------------+
+    | 1          | hello world of SQL              |
+    | 2          | the QUICK-brown fox             |
+    | 3          | modern-day DATA science         |
+    | 4          | web-based FRONT-end development |
+    +------------+---------------------------------+ 
+
+**Output:**
+
+    +------------+---------------------------------+---------------------------------+
+    | content_id | original_text                   | converted_text                  |
+    +------------+---------------------------------+---------------------------------+
+    | 1          | hello world of SQL              | Hello World Of Sql              |
+    | 2          | the QUICK-brown fox             | The Quick-Brown Fox             |
+    | 3          | modern-day DATA science         | Modern-Day Data Science         |
+    | 4          | web-based FRONT-end development | Web-Based Front-End Development |
+    +------------+---------------------------------+---------------------------------+ 
+
+**Explanation:**
+
+*   For content\_id = 1:
+    *   Each word's first letter is capitalized: "Hello World Of Sql"
+*   For content\_id = 2:
+    *   Contains the hyphenated word "QUICK-brown" which becomes "Quick-Brown"
+    *   Other words follow normal capitalization rules
+*   For content\_id = 3:
+    *   Hyphenated word "modern-day" becomes "Modern-Day"
+    *   "DATA" is converted to "Data"
+*   For content\_id = 4:
+    *   Contains two hyphenated words: "web-based" → "Web-Based"
+    *   And "FRONT-end" → "Front-End"

src/main/java/g3301_3400/s3374_first_letter_capitalization_ii/solution.py

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+# #Hard #Database #2024_12_06_Time_261_ms_(84.21%)_Space_66.3_MB_(17.89%)
+
+import pandas as pd
+
+def capitalize_content(user_content):
+    user_content['converted_text'] = (user_content.content_text.apply(lambda x: x.title()))
+    return user_content.rename(columns={'content_text': 'original_text'})

src/test/java/g3301_3400/s3374_first_letter_capitalization_ii/solution_test.py

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+import unittest
+import pandas as pd
+
+# Embed the script
+def capitalize_content(user_content):
+    user_content['converted_text'] = (user_content.content_text.apply(lambda x: x.title()))
+    return user_content.rename(columns={'content_text': 'original_text'})
+
+# Test suite
+class TestCapitalizeContent(unittest.TestCase):
+
+    def test_normal_case(self):
+        # Input data
+        data = {
+            'content_id': [1, 2],
+            'content_text': ['hello world', 'python programming']
+        }
+        df = pd.DataFrame(data)
+
+        # Expected output
+        expected_data = {
+            'content_id': [1, 2],
+            'original_text': ['hello world', 'python programming'],
+            'converted_text': ['Hello World', 'Python Programming']
+        }
+        expected_df = pd.DataFrame(expected_data)
+
+        # Test
+        result = capitalize_content(df)
+        pd.testing.assert_frame_equal(result, expected_df)
+
+    def test_hyphenated_words(self):
+        # Input data
+        data = {
+            'content_id': [1],
+            'content_text': ['well-known fact']
+        }
+        df = pd.DataFrame(data)
+
+        # Expected output
+        expected_data = {
+            'content_id': [1],
+            'original_text': ['well-known fact'],
+            'converted_text': ['Well-Known Fact']
+        }
+        expected_df = pd.DataFrame(expected_data)
+
+        # Test
+        result = capitalize_content(df)
+        pd.testing.assert_frame_equal(result, expected_df)
+
+    def test_mixed_case(self):
+        # Input data
+        data = {
+            'content_id': [1],
+            'content_text': ['QUICK-brown FOX']
+        }
+        df = pd.DataFrame(data)
+
+        # Expected output
+        expected_data = {
+            'content_id': [1],
+            'original_text': ['QUICK-brown FOX'],
+            'converted_text': ['Quick-Brown Fox']
+        }
+        expected_df = pd.DataFrame(expected_data)
+
+        # Test
+        result = capitalize_content(df)
+        pd.testing.assert_frame_equal(result, expected_df)
+
+    def test_empty_input(self):
+        # Input data
+        df = pd.DataFrame(columns=['content_id', 'content_text'])
+
+        # Expected output
+        expected_df = pd.DataFrame(columns=['content_id', 'original_text', 'converted_text'])
+
+        # Test
+        result = capitalize_content(df)
+        pd.testing.assert_frame_equal(result, expected_df)
+
+    def test_special_characters(self):
+        # Input data
+        data = {
+            'content_id': [1],
+            'content_text': ['C++ Programming']
+        }
+        df = pd.DataFrame(data)
+
+        # Expected output
+        expected_data = {
+            'content_id': [1],
+            'original_text': ['C++ Programming'],
+            'converted_text': ['C++ Programming']
+        }
+        expected_df = pd.DataFrame(expected_data)
+
+        # Test
+        result = capitalize_content(df)
+        pd.testing.assert_frame_equal(result, expected_df)
+
+if __name__ == '__main__':
+    unittest.main()