// Package q1758 implements a solution for https://leetcode.com/problems/minimum-changes-to-make-alternating-binary-string/
package q1758

func minOperations(s string) int {
	a, b := 0, 0
	var alt byte = 1

	for i := range len(s) {
		if s[i]-'0' == alt {
			a++
		} else {
			b++
		}
		alt = alt ^ 1
	}
	return min(a, b)
}

var _ = minOperations