package officialWebsiteser

func transPageAndPageNumber(pageSize, pageNumber int64) (skip int64, limit int64) {
	if pageNumber <= 0 {
		pageNumber = 1
	}
	if pageSize <= 0 {
		pageSize = 20
	}
	skip = (pageNumber - 1) * pageSize
	limit = pageSize
	return skip, limit
}