split-a-string-in-balanced-strings.py

# Time:  O(n)
# Space: O(1)

class Solution(object):
    def balancedStringSplit(self, s):
        """
        :type s: str
        :rtype: int
        """
        result, count = 0, 0      
        for c in s:
            count += 1 if c == 'L' else -1            
            if count == 0:
                result += 1
        return result