On Linux get a Go compiler:
Assuming a Debian-style distribution (we'll use zsh
later in an example):
sudo apt-get update
sudo apt-get install golang make zsh
On MacOS get a Go compiler using Homebrew:
Visit https://brew.sh/ if you don't have it already.
brew install golang
On FreeBSD get a Go compiler:
sudo pkg install go zsh
After that, clone the github-repo and build the program using make:
git clone https://github.com/k0ffee/go-random
cd go-random
make
make test
In the directory where you've just build the programs, run them like this:
./jar
or
./shuffle
or
./map
They should output a ten digit list like:
4 3 7 6 8 10 5 1 2 9
Run it multiple times to get more numbers:
If you're using the Z-Shell:
repeat 10 ./jar
Output:
1 5 9 2 6 3 8 7 10 4
10 3 6 5 1 8 7 4 2 9
9 10 4 1 7 5 6 3 2 8
8 4 1 2 3 7 9 6 5 10
8 7 3 5 9 1 2 10 6 4
1 10 5 9 7 6 2 8 3 4
8 2 1 9 7 4 5 10 3 6
7 5 10 8 9 1 2 6 3 4
7 9 3 10 4 6 2 8 5 1
3 2 9 8 10 1 5 7 6 4
If your're using the Bash shell, try:
for i in {1..10}; do ./jar; done
Alternatively run it on the Golang playground:
https://play.golang.org/p/S-Xrd_cSiay
Notice that on the playground any randomness is supressed, it will output the same result for all runs.
I like jar most, then shuffle, then map.
map and shuffle are limited in the randomness of their
output data. It is considered "good enough" for a toy program though.
Consider using jar for less predictable random numbers.
See https://en.wikipedia.org/wiki/Pseudorandom_number_generator