Answer
$\bullet$ Set value of Previous to 0
$\bullet$ Set value of $V$ to the first element of the list
$\bullet$ Set the value of Exists to $N O$
$\bullet$ While both $(V \geq-1)$ and (Exists $=N O )$ do
$\bullet \quad$ Set value of Previous to $V$
$\bullet \quad$ Set value of $V$ to next element from the list
$\bullet\quad$ If Previous $=V$ then
$\bullet\quad\quad$ Set Exists to $Y E S$
$\bullet$ End of loop.
$\bullet$ Print value of Exists
Work Step by Step
$\bullet$ Set value of Previous to 0
$\bullet$ Set value of $V$ to the first element of the list
$\bullet$ Set the value of Exists to $N O$
$\bullet$ While both $(V \geq-1)$ and (Exists $=N O )$ do
$\bullet \quad$ Set value of Previous to $V$
$\bullet \quad$ Set value of $V$ to next element from the list
$\bullet\quad$ If Previous $=V$ then
$\bullet\quad\quad$ Set Exists to $Y E S$
$\bullet$ End of loop.
$\bullet$ Print value of Exists
