2。 Use the seed () function to set a random seed.
3。 Use rand()%num function to get a random integer r less than num.
4。 Output this r name.
5。 Moving the last name to the position of R name to cover it is to copy the num- 1 name to the position of R, and then subtract 1 from the total number of names num.
6。 Loop 3 to 5 steps until num is reduced to 0, which means all the names are taken away. end of program