921 finish

Author: aQuaYi

Algorithms/0921.minimum-add-to-make-parentheses-valid/minimum-add-to-make-parentheses-valid.go

@@ -1,6 +1,10 @@
 package problem0921
 
-func minAddToMakeValid(S string) int {
+import "strings"
 
-	return 0
+func minAddToMakeValid(S string) int {
+	for strings.Contains(S, "()") {
+		S = strings.Replace(S, "()", "", -1)
+	}
+	return len(S)
 }