Merge pull request #112 from ashwek/AtoI

0008 String to Integer(atoi) - Python

Author: yanglbme

solution/0008.String to Integer(atoi)/Solution.py

@@ -0,0 +1,25 @@
+class Solution:
+    def myAtoi(self, s):
+        """
+        :type s: str
+        :rtype: int
+        """
+        
+        try:
+            s = list(s.split()[0])
+            Sign = {'+':1, '-':-1}[s[0]]
+            s.pop(0)
+        except IndexError : return 0
+        except KeyError: Sign = 1
+
+        Num = 0
+        for i in s:
+            try: Num = int(i) + (Num*10)
+            except ValueError: break   
+                
+        Num = Sign*Num
+        if Num > 2147483647:
+            return 2147483647
+        elif Num < -2147483648:
+            return -2147483648
+        return Num