Given a binary string s
without leading zeros, return true
if s
contains at most one contiguous segment of ones. Otherwise, return false
.
Example 1:
Input: s = "1001" Output: false Explanation: The ones do not form a contiguous segment.
Example 2:
Input: s = "110" Output: true
Constraints:
1 <= s.length <= 100
s[i]
is either '0'
or '1'
.s[0]
is '1'
.