Shuffle a group of numbers

[akinidu]

Hello Every one !

Suppose i have a vector a=[1 2 3 4 5 6 7 8 9 10]

Now i want to shuffle these number! and produce new vector b which consist of shuffle numbers which is best way to do it !

This problem is very similar to shuffle a group of cards!

I have a approach in my mind like

Take a random number from a, put it in a b in random position then choose another one from a put it randomly in b ! Question how to do it

[jkmyoung]

That is a good approach. For the first run, you want to get a number between 0 and length of the vector - 1

So set index = (int)(rand() * length)
remove object at index from the first vector.
add this object to new vector.
repeat until the first vector is empty.

[whodgson]

You could also use random_shuffle( a,a+10) which resides in the <algorithm> header file.