알고리즘- 순열, 판매원

순열 알고리즘

http://dearfriend.tistory.com/146

http://gorakgarak.tistory.com/522  출력순서가 맞음

http://programbasic.tistory.com/306

http://algorian.tistory.com/9

판매원 알고리즘

http://gorakgarak.tistory.com/710