Desolve/1544 Make The String Great.py

## 1544 Make The String Great.py
class Solution:
    def makeGood(self, s: str) -> str:
        if len(s) < 2: return s
        st = []
        for c in s:
            if st and abs(ord(st[-1]) - ord(c)) == 32:
                st.pop()
            else:
                st.append(c)
        return ''.join(st)
	class Solution:
	def makeGood(self, s: str) -> str:
	if len(s) < 2: return s
	st = []
	for c in s:
	if st and abs(ord(st[-1]) - ord(c)) == 32:
	st.pop()
	else:
	st.append(c)
	return ''.join(st)