N个数字排成一个圆环,每次删除第n个数字,求最后剩下的一个数字。
经典的约瑟夫环问题,例如,N = [0,1,2,3,4,5,6,7,8,9],每次删除第3个数字,每次删除后,N的数值如下:
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
[3, 4, 5, 6, 7, 8, 9, 0, 1]
[6, 7, 8, 9, 0, 1, 3, 4]
[9, 0, 1, 3, 4, 6, 7]
[3, 4, 6, 7, 9, 0]
[7, 9, 0, 3, 4]
[3, 4, 7, 9]
[9, 3,