update 14

leetcode/14.py

@@ -3,19 +3,18 @@
 # 0 <=strs[i].length <= 200
 # only lowercase
 class Solution:
-    def longestCommonPrefix(self,strs: list[str]) -> str:
-    returnString = ""
-    index = 0
-    while i < len(str[0]):
-        try:
-            for string in strs:
-                if string[i] == strs[0][i]:
-                    i += 1
-                    returnString += string[i]
-                else:
-                    break
-        except:
-            break
+    def longestCommonPrefix(self, strs: list[str]) -> str:
+        return_string = ""
+        i = 0
+        while i < len(strs[0]):
+            try:
+                for string in strs:
+                    if string[i] != strs[0][i]:
+                        break
 
-    return returnString
+                i += 1
+                return_string += strs[0][i]
+            except:
+                break
 
+        return return_string