add new solutions

solutions/36/q3606/solution.go

@@ -0,0 +1,58 @@
+package q3606
+
+import (
+	"slices"
+	"strings"
+)
+
+func isValidCode(code string) bool {
+	for i := range len(code) {
+		c := code[i]
+		if (c < 'a' || c > 'z') &&
+			(c < 'A' || c > 'Z') &&
+			(c < '0' || c > '9') &&
+			c != '_' {
+			return false
+		}
+	}
+	return len(code) > 0
+}
+
+func businessToI(b string) int8 {
+	switch b {
+	case "electronics":
+		return 1
+	case "grocery":
+		return 2
+	case "pharmacy":
+		return 3
+	case "restaurant":
+		return 4
+	}
+	return 0
+}
+
+func validateCoupons(code []string, businessLine []string, isActive []bool) []string {
+	validCodes := []int{}
+	for i := range code {
+		if isValidCode(code[i]) && businessToI(businessLine[i]) > 0 && isActive[i] {
+			validCodes = append(validCodes, i)
+		}
+	}
+
+	slices.SortFunc(validCodes, func(a, b int) int {
+		ba, bb := businessToI(businessLine[a]), businessToI(businessLine[b])
+		if ba != bb {
+			return int(ba - bb)
+		}
+		return strings.Compare(code[a], code[b])
+	})
+
+	ret := make([]string, 0, len(validCodes))
+	for _, i := range validCodes {
+		ret = append(ret, code[i])
+	}
+	return ret
+}
+
+var _ = validateCoupons