康托展开 已知一个排列,求这个排列在全排列中是第几个 康托展开逆运算:已知在全排列中排第几,求这个排列
TheisolatedpeopleofMacGuffinIslandhaveauniqueculture,andoneofthemostinterestingthingsaboutthemistheirlanguage.Theiralphabetconsistsofthefirst9lettersoftheRomanalphabet(a,b,c,d,e,f,g,h,i).Alloftheirwor