Write a script that generates the following $1$D random walk $(100$ steps$)$: each time the position of the marker changes by $-1,0,$ or $1.$ The marker starts its walk at $x=15.$

Write a script to answer the following questions:

What is the final location of the marker $($assign the result to $x)?$

What is the total distance travelled by the marker $($assign the result to $d$; $d$ should be a regular variable and not a vector$)?$

Hint: consider using a built$-$in function called abs for finding the absolute value and thus the travelled distance.

Script $0$

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MATLAB Documentation

x$\_1=15$;

d$\_1=0$;

total$\_$steps $=100$;

k$\_1=-1$;

$N=3$;

k$\_$N$=1$

i$\_1=$randi$($N$)$