[R] Simulation based on runif to get mean

[smart hendsome]

Hello everyone,
I have a question regarding simulating based on runif.  Let say I have generated matrix A and B based on runif. Then I find mean for each matrix A and matrix B.  I want this process to be done let say 10 times. Anyone can help me.  Actually I want make the function that I can play around with the number of simulation process that I want. Thanks.
Eg:
a <- matrix(runif(5,1, 10))

b <- matrix(runif(5,10, 20))

c <- cbind(a,b); c

mn <- apply(c,2,mean); mn

Regards,
Zuhri

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