Initialize p884 uncommon_words_from_two_sentences.py

python/README.md

@@ -52,6 +52,9 @@
 1. No.151 [Reverse Words in a String](https://leetcode.com/problems/reverse-words-in-a-string/) | [翻转字符串里的单词](https://leetcode-cn.com/problems/reverse-words-in-a-string/)
     - Code: [reverse_words_in_a_string.py](./src/leetcode/reverse_words_in_a_string.py)
     - Test: [reverse_words_in_a_string.py](./tests/reverse_words_in_a_string.py)
+1. No.884 [Uncommon Words from Two Sentences](https://leetcode.com/problems/uncommon-words-from-two-sentences/) | [两句话中的不常见单词](https://leetcode-cn.com/problems/uncommon-words-from-two-sentences/)
+    - Code: [spiral_matrix_iii.py](./src/leetcode/spiral_matrix_iii.py)
+    - Test: [spiral_matrix_iii.py](./tests/spiral_matrix_iii.py)
 1. No.885 [Spiral Matrix III](https://leetcode.com/problems/spiral-matrix-iii/) | [螺旋矩阵 III](https://leetcode-cn.com/problems/spiral-matrix-iii/)
     - Code: [spiral_matrix_iii.py](./src/leetcode/spiral_matrix_iii.py)
     - Test: [spiral_matrix_iii.py](./tests/spiral_matrix_iii.py)

python/src/leetcode/uncommon_words_from_two_sentences.py

@@ -0,0 +1,28 @@
+from typing import List
+
+
+class Solution:
+    def uncommonFromSentences(self, A: str, B: str) -> List[str]:
+        repeats = set()
+        a_set = set()
+        for i in A.split():
+            if i in a_set:
+                repeats.add(i)
+            else:
+                a_set.add(i)
+        b_set = set()
+        for i in B.split():
+            if i in b_set:
+                repeats.add(i)
+            else:
+                b_set.add(i)
+
+        diff = a_set.symmetric_difference(b_set)
+        return list(diff.difference(repeats))
+
+
+# Python 3
+# Runtime: 36 ms, faster than 80.46% of Python3 online submissions
+# for Uncommon Words from Two Sentences.
+# Memory Usage: 14 MB, less than 9.09% of Python3 online submissions
+# for Uncommon Words from Two Sentences.

python/tests/uncommon_words_from_two_sentences.py

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+from pytest import mark
+
+from leetcode.uncommon_words_from_two_sentences import Solution
+
+from . import read_csv
+
+
+@mark.parametrize('a, b, expect', read_csv(__file__))
+def test_two_sum(a, b, expect):
+    result = Solution().uncommonFromSentences(a, b)
+    assert set(result) == eval(expect)

test/cases/uncommon_words_from_two_sentences.csv

@@ -0,0 +1,7 @@
+nums,target,expect
+,,set()
+apple,,{'apple'}
+this apple is sweet,this apple is sour,"{'sour', 'sweet'}"
+apple apple,banana,{'banana'}
+apple apple,banana banana,set()
+apple,banana,"{'apple', 'banana'}"

test/generators/uncommon_words_from_two_sentences.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+# -*- coding:utf-8 -*-
+
+FIELDS = ['nums', 'target', 'expect']
+ROWS = [
+    ('', '', set()),
+    ('apple', '', {'apple'}),
+    ('this apple is sweet', 'this apple is sour', {'sweet', 'sour'}),
+    ('apple apple', 'banana', {'banana'}),
+    ('apple apple', 'banana banana', set()),
+    ('apple', 'banana', {'apple', 'banana'}),
+]
+
+if __name__ == '__main__':
+    from utils import generate_csv
+
+    generate_csv(__file__, FIELDS, ROWS)