[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

strings/longest_common_prefix.py

@@ -1,7 +1,7 @@
-def longest_common_prefix(strs: list[str])->str:
+def longest_common_prefix(strs: list[str]) -> str:
     """
     :type strs: List[str]
-    
+
     URL:
         https://en.wikipedia.org/wiki/Longest_common_prefix
 
@@ -12,7 +12,7 @@ def longest_common_prefix(strs: list[str])->str:
     Returns:
         str:The longest common prefix shared among all strings.
             Returns an empty string if there is none.
-    
+
     Test cases:
     >>> longest_common_prefix(["flower","flow","flap"])
     'fl'
@@ -27,25 +27,19 @@ def longest_common_prefix(strs: list[str])->str:
     >>> longest_common_prefix(["#hashtag","#hashbrown","#hash"])
     '#hash'
     """
-    ans=""
+    ans = ""
     if not strs:
         return ""
-    if len(strs)==1:
+    if len(strs) == 1:
         return strs[0]
-    
-    k=0
-    ref=strs[0]
 
-    while k<len(ref):
-        for ele in strs:
-            if len(ele)<k+1 or ref[k]!=ele[k]:  
+    k = 0
+    ref = strs[0]
 
+    while k < len(ref):
+        for ele in strs:
+            if len(ele) < k + 1 or ref[k] != ele[k]:
                 return ans
-        ans+=ele[k]
-        k+=1
+        ans += ele[k]
+        k += 1
     return ans
-
-
-                
-
-