Init

Author: kumailn

Python/String_To_Int.py

@@ -0,0 +1,20 @@
+def toInt(s):
+        """
+        :type str: str
+        :rtype: int
+        """
+        num = i = 0
+        nums = "0987654321"
+        s = s.strip(" ")
+        if not s: return 0
+        neg = s[0] == "-"
+        if s[0] == "+" or neg: s = s[1:]
+        if not s: return 0
+        if s[0] != "-" and s[0] != "+" and s[0] not in nums: return 0
+        while i < len(s) and s[i] in nums: i += 1
+        if not i and s[i] not in nums: return 0
+        num = int(s[:i]) if not neg else - 1 * int(s[:i])
+        if num > (2**31) - 1: return (2 ** 31) - 1
+        if num < -(2**31): return -1 * (2 ** 31)
+        return num
+