# Repeating a pickrandom

Trying to repeat a pickrandom 4 times and I can’t remember how.

1 Like

If you want to run the same block of code multiple times, try using a for loop. For example:

``````let colors = ['red', 'green', 'blue'];

for (let i = 0; i < 10; i++) {
drawBox(pickRandom(colors));
}
``````

That’s what I thought I had tired last time, but it’s working now, thanks!! How would I make sure it doesn’t select an item from the array twice? Ex. Let’s say I was picking from an array [ 1, 2, 3, 4] and I wanted to pick randomly, four times. This would give me four outputs between 1 and 4, but may include two 3’s. How could I ensure I see 1, 2, 3, and 4 presented, but in a different order?

Hey there, good question! Now we’re getting into (basic) algorithms! I’m going to turn this into a small challenge for you to solve in the playground.

Let’s review what you want…

You want a function that:

• Randomly picks an item from an array.
• If that item has been picked previously, that item is skipped, and the function tries picking again.

This means you need to:

• Remember what items have already been picked, or alternately, the index locations of previously-picked items.
• Decide what to do if the item has been previously picked.
• Decide what to do if the item has not been previously picked.

A few questions:

• What is the function going to take? An array? A string?
• Is the function going to return anything? If so, what? (It’s ok if the function doesn’t return anything. You could just `console.log()` each of the picked items.)

Good luck! Let me know if you have any questions.
Ben