Public class LightSequence

{

// attributes not shown

/** The parameter seq is the initial sequence used for

* the light display

*/

public LightSequence(String seq)

{ /* implementation not shown */ }

/** Inserts the string segment in the current sequence,

* starting at the index ind. Returns the new sequence.

*/

public String insertSegment(String segment, int ind)

{ /* implementation not shown */ }

/** Updates the sequence to the value in seq

*/

public void changeSequence(String seq)

{ /* implementation not shown */ }

/** Uses the current sequence to turn the light on and off

* for the show

*/

public void display()

{ /* implementation not shown */ }

}

(f) Two lights will be arranged on a two-dimensional plane. The vertical distance between the two lights is stored in the double variable a. The horizontal distance between the two lights is stored in the double variable b.

The straight-line distance between the two lights is given by the formula
a2+b2−−−−−−√
.

Write a code segment that prints the straight-line distance between the two lights according to the formula above.