The following pseudocode describes a simple algorithm which swaps the values in two variables,

x and y:

$1)$ print "Enter initial value of x: $"$

$2)$ input x

$3)$ print "Enter initial value of y: $"$

$4)$ input y

$5)$ set temp to x

$6)$ set x to y

$7)$ set y to temp

$8)$ print $"$x $="+$ x

$9)$ print $"$y $="+$ y

$($a$)$ Trace this sequence using a separate row for each statement.

$($b$)$ Implement this algorithm as a Java program to confirm your output