Consider the following code $($which can be copy$/$pasted into google colab$)$:

data$=$np$.$array $([1,4,9,16,25,36])$ #Here is some sample data

difference$=$np$.$ zeros$($len$($data$)-1)$ #'difference' is a new array filled with zeroes.

print$(\text{'}$difference before the "for" loop: $\text{'},$ difference$)$

print$(\text{'}\}$

${(}^{\text{'}}$

for $i$ in range$($len$($difference$))$: #this "for" runs the indented lines below once for each value of $i.$

difference$[$i$]=($data$[$i$+1]-$data$[$i$])$ #this line is filling in the values in our 'difference' array

print$($i$)$

print$(\text{'}$difference during the "for" loop: $\text{'},$ difference$)$

print$(\text{'}\frac{?}{?}$

${?}^{\text{'}})$

print$(\text{'}$difference AFTER the "for" loop: $\text{'},$ difference$)$

print$($i$)$

What values are in the 'difference' array after running this whole block of code? $($Watch out, this code might change if you need to repeat this question. Make sure you read the code above in detail.$)$