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A booking site keeps a waiting list in a list, in order. Process the commands in order. JOIN <name> adds a person at the end. VIP <name> adds a person at the front. CANCEL <name> removes the first person with that name and prints Cancelled <name>, or No such name if nobody has it. SERVE removes the first person and prints Served <name>, or Nobody waiting if the list is empty. SHOW prints Waiting: [a, b, c]. JOIN and VIP print nothing.
CANCEL, SERVE and SHOW command, in order.Example
Input
8 JOIN Asha JOIN Ravi VIP Meena SHOW CANCEL Ravi CANCEL Zed SERVE SHOW
Output
Waiting: [Meena, Asha, Ravi] Cancelled Ravi No such name Served Meena Waiting: [Asha]
Try the problem first. Open one hint at a time.
Read each command with sc.next(); read the name with another sc.next() only for the commands that have one.
add(0, name) puts a person at the front. remove(name) returns false when nobody matches.
Check isEmpty() before remove(0).
Write your Java code, run it on the examples and submit it to hidden tests.
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