Answer Posted / navin kumar

Map<String,String> map = new HashMap<String,String>();
map.put("A","Rohan");
map.put("C","Sohan");
map.put("B","Ram");

for(String key : map.entrySet()){
sop(key);//A,C and B as key
sop(map.get(key))//Rohan,Sohan and Ram as values
}

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2) Write a program that will help Air Traffic Control for an airport to view the sequence of flights ready for take-off. The airport can accommodate 10 flights waiting for take-off at any point in time. Each flight has a unique 3 digit numeric identifier.  Each time a flight takes-off, Air Traffic Control adds a flight to the waitlist. Each time a flight is added to the waitlist, the list of flights waiting to take-off must be displayed.  When a flight is cleared for take-off, Air Traffic Control removes the flight from the waitlist. Each time a flight takes-off, the list of flights waiting to take-off must be displayed.  Sequence of take-off is the sequence of addition to the waitlist

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