I'm a beginner and just study programming.
I have to make some random number. I found many solution in this site, but does'nt seem to be like i want.
Please see this screen shot. I have to make some simple program like sudoku game. And must put random number at the beginning of the game. But how to make the random number do not same between each other?
i try using
but the random number generated sometime were repeated.
thanks for your help.