Treating Python String

Coding Test/344.py

@@ -0,0 +1,4 @@
+class Solution:
+    def reverseString(self, s: List[str]) -> None:
+        s.reverse()
+

Coding Test/49.py

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+class Solution:
+    def groupAnagrams(self, strs: List[str]) -> List[List[str]]:
+        anagrams = collections.defaultdict(list)
+
+        for word in strs:
+            anagrams[''.join(sorted(word))].append(word)
+        return anagrams.values()

Coding Test/5.py

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+class Solution:
+    def longestPalindrome(self, s: str) -> str:
+        def expand(left: int, right: int) -> str:
+            while left >= 0 and right <= len(s) and s[left] == s[right-1]:
+                left -= 1
+                right += 1
+            return s[left+1:right-1]
+
+        if len(s) < 2 or s == s[::-1]:
+            return s
+
+        result = ''
+
+        for i in range(len(s)-1):
+            result = max(result, expand(i, i+1), expand(i, i+2), key=len)
+
+        return result

Coding Test/819.py

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+class Solution:
+    def mostCommonWord(self, paragraph: str, banned: List[str]) -> str:
+        words = [word for word in re.sub('[^\w]', ' ', paragraph).lower().split() if word not in banned]
+
+        counts = collections.Counter(words)
+
+        return counts.most_common(1)[0][0]
+

Coding Test/937.py

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+class Solution:
+    def reorderLogFiles(self, logs: List[str]) -> List[str]:
+        letters, digits = [], []
+        for log in logs:
+            if log.split()[1].isdigit():
+                digits.append(log)
+            else:
+                letters.append(log)
+
+        letters.sort(key=lambda x: (x.split()[1:], x.split()[0]))
+        return letters + digits

Coding Test/Helpful.md

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+# Helpful Things
+
+## Python Regex Module
+
+[Python Regex](https://www.w3schools.com/python/python_regex.asp)
+
+```python3
+import re
+
+re.findAll()
+re.search()
+re.split()
+re.sub()
+```
+
+## Python Lambda
+
+[Python Lambda](https://www.w3schools.com/python/python_lambda.asp)
+
+## Python String
+
+[Python String Method](https://www.w3schools.com/python/python_strings_methods.asp)

README.md

@@ -10,7 +10,7 @@
 
 파이썬 문자열 조작
 
-> 125, 344
+> 125, 344, 937, 819, 49, 5
 
 ## 자료구조