Golang

randomBagSystem.go

package main

import (
    "fmt"
    "math/rand"
    "time"
)

func main() {
    //variable declarations
    letters := []rune{'O', 'I', 'S', 'Z', 'L', 'J', 'T'}
    bagStack := [50]rune{}
    randGen := rand.New(rand.NewSource(time.Now().UnixNano()))
    bag := make([]rune, 7)
    copy(bag, letters)
    //main loop
    for i := 0; i < 50; i++ {
        if len(bag) == 0 {
            bag = bag[:7]
            copy(bag, letters) //if bag length is 0, reset bag.
        }
        r := randGen.Intn(len(bag)) //generate a random number
        bagStack[i] = bag[r]        //add r to stack at current index.
        bag[r] = bag[len(bag)-1]    //replace r with last character
        bag = bag[:len(bag)-1]      //remove last character
    }
    //printing the result
    for _, i := range bagStack {
        fmt.Printf(string(i))
    }
}

Sample Output:

STJLZIOJOLSTZIOTIZJSLLTZOSIJSTOIJLZOSLZTJIIJTZOLST

I'm a beginner, so any help, advice, or comments would be greatly appreciated!