?????????????????????????

?????1 Combinations Demo

??????????????????????????·??÷?????1?????Windows@-based??ó?????????????????????á??????????????????????????????????????????????????????5?????——Adam??Barb??Carl??Dave??Eric ——?????3?????????????????5???????????????3????????10????????
{ Adam?? Barb?? Carl }?? { Adam?? Barb?? Dave }?? . . . { Carl?? Dave?? Eric }
??????????????????????{Carl??Barb??Adam}??{Adam??Barb??Carl}?????????????????????????1??????????????????????????С???????С????????????????????????????????????
???????????????????n???????0??n-1????????4????????????????2????6?????????
{ 0?? 1 }{ 1?? 2 }
{ 0?? 2 } { 1?? 3 }
{ 0?? 3 } { 2?? 3 }
?????????????????????????????????????????????????ж???????????á???????????????????????????????????к?????????????????????????????????е??Щ??????????????д??????????Ч??????