add new solutions

solutions/36/q3612/solution.go

@@ -0,0 +1,25 @@
+// Package q3612 implements a solution for https://leetcode.com/problems/process-string-with-special-operations-i/
+package q3612
+
+import "slices"
+
+func processStr(s string) string {
+	ret := make([]byte, 0, len(s)*2)
+
+	for i := range len(s) {
+		switch s[i] {
+		case '*':
+			ret = ret[:max(len(ret)-1, 0)]
+		case '#':
+			ret = append(ret, ret...)
+		case '%':
+			slices.Reverse(ret)
+		default:
+			ret = append(ret, s[i])
+		}
+	}
+
+	return string(ret)
+}
+
+var _ = processStr