update

Author: ncdhz

code/709.转换成小写字母.py

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+#
+# @lc app=leetcode.cn id=709 lang=python3
+#
+# [709] 转换成小写字母
+#
+
+# @lc code=start
+class Solution:
+ def toLowerCase(self, s: str) -> str:
+ a = ord('a')
+ A = ord('A')
+ Z = ord('Z')
+ res = ''
+ for ss in s:
+ if Z >= ord(ss) >= A:
+ res += chr(a + ord(ss) - A)
+ else:
+ res += ss
+ return res
+# @lc code=end
+

code/717.1-比特与-2-比特字符.py

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+#
+# @lc app=leetcode.cn id=717 lang=python3
+#
+# [717] 1 比特与 2 比特字符
+#
+
+# @lc code=start
+class Solution:
+ def isOneBitCharacter(self, bits: List[int]) -> bool:
+ i = 0
+ res = False
+ while i < len(bits):
+ b = bits[i]
+ if b == 1:
+ i += 2
+ res = False
+ else:
+ i += 1
+ res = True
+ return res
+# @lc code=end
+