Flip String to Monotone Increasing
A binary string is monotone increasing if it consists of some number of 0's (possibly none), followed by some number of 1's (also possibly none).
You are given a binary string s. You can flip s[i], changing it from 0 to 1 or from 1 to 0.
Return the minimum number of flips to make s monotone increasing.
Example 1
Input
s = "00110"Output
1We flip the last digit to get 00111.
Example 2
Input
s = "010110"Output
2We flip to get 011111, or alternatively 000111.
Constraints
- 1 <= s.length <= 10^5
- s[i] is either '0' or '1'.