Activity diagrams in LLD - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define the start point in an activity diagram.

LLD

start = [1]()

Drag options to blanks, or click blank then click option'

ADecisionNode

BActivityFinalNode

CInitialNode

DMergeNode

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing start with end node

Using decision node as start

The start of an activity diagram is represented by an InitialNode.

2fill in blank

medium

Complete the code to add a decision node in the activity diagram.

LLD

decision = [1]()

Drag options to blanks, or click blank then click option'

AInitialNode

BDecisionNode

CActivityFinalNode

DForkNode

Attempts:

3 left

💡 Hint

Common Mistakes

Using fork node instead of decision node

Using initial node here

A DecisionNode is used to represent a branching point in the activity flow.

3fill in blank

hard

Fix the error in the code to correctly represent the end of an activity.

LLD

end = [1]()

Drag options to blanks, or click blank then click option'

AActivityFinalNode

BDecisionNode

CInitialNode

DForkNode

Attempts:

3 left

💡 Hint

Common Mistakes

Using initial node as end

Using decision node as end

The end of an activity diagram is represented by an ActivityFinalNode.

4fill in blank

hard

Fill both blanks to create a fork and join in the activity diagram.

LLD

fork = [1]()
join = [2]()

Drag options to blanks, or click blank then click option'

AForkNode

BDecisionNode

CJoinNode

DMergeNode

Attempts:

3 left

💡 Hint

Common Mistakes

Using decision node instead of fork

Using merge node instead of join

A ForkNode splits the flow into parallel paths, and a JoinNode synchronizes them back.

5fill in blank

hard

Fill all three blanks to define an activity with guard conditions.

LLD

activity = ActivityNode(name=[1], guard=[2], next=[3])

Drag options to blanks, or click blank then click option'

A"ProcessOrder"

B"orderValid == true"

C"ShipOrder"

D"CheckInventory"

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up guard and next parameters

Using invalid guard syntax

The activity named "ProcessOrder" proceeds to "ShipOrder" only if the guard condition "orderValid == true" is met.