Time: 17 ms (82.26%), Space: 13.4 MB (65.37%) - LeetHub

28-find-the-index-of-the-first-occurrence-in-a-string/28-find-the-index-of-the-first-occurrence-in-a-string.py

@@ -0,0 +1,19 @@
+class Solution(object):
+    def strStr(self, haystack, needle):
+        """
+        :type haystack: str
+        :type needle: str
+        :rtype: int
+        """
+        # Empty needle edge-case
+        if needle == "":
+            return 0
+        
+        index = 0
+        while index + len(needle) <= len(haystack):
+            if haystack[index] == needle[0]:
+                if haystack[index:index+len(needle)] == needle:
+                    return index
+            index += 1
+            
+        return -1