------
## 最终结论
```python
def min_flip_to_make_string_alternate(s: str) -> int:
    n = len(s)
    pattern1 = ''.join('01'[(i % 2)] for i in range(n))
    pattern2 = ''.join('10'[(i % 2)] for i in range(n))
    
    flips_pattern1 = sum(1 for i in range(n) if s[i] != pattern1[i])
    flips_pattern2 = sum(1 for i in range(n) if s[i] != pattern2[i])
    
    return min(flips_pattern1, flips_pattern2)

# Test cases
assert min_flip_to_make_string_alternate("0001010111") == 2
assert min_flip_to_make_string_alternate("001") == 1
assert min_flip_to_make_string_alternate("010111011") == 2
```