[CSC 204] Help on Assignment 4

[Andrew J. Pounds]

Here is some help for those of you struggling to get the array of states 
built in Assignment 4.


/* At this point you should have processed all of your stations and have 
them in an array. In the example below that array is called stations and 
it is of type Station (which is defined in Station.java. Since you now 
have all of the station ID's and the states that they are associated 
with, you can use that data to build an array of type State.  I'll give 
you a head start... */ int numberOfStates=1; State[] stateData = new 
State[numberOfStates]; stateData[0] = new State( stations[0].getState() 
); String state; // I'm going to run through all of the stations in my 
array for ( int i=1; i<stations.length; i++ ){ boolean found = false; 
int j = 0; // Now I'm going to look through the stateData array and see 
if the state // that is tied the index i in the station array is already 
in the stateData array. // If it is then I set the boolean found to 
true. while ( j<stateData.length && !found ) { if ( 
stations[i].getState().equals(stateData[j].getState())) { found = true; 
} j++; } // If the state for index i in the stations array is already in 
the stateData array // then I don't need to add it again. If it is NOT 
found in the stateData array, // then I need to increase the size of my 
array and add the new data to the end. // Look how similar this is to 
the last thing you did in processing the stations! if (!found) { State[] 
newstateData = new State[stateData.length+1]; for (int k=0; 
k<stateData.length; k++ ) newstateData[k] = stateData[k]; 
newstateData[newstateData.length-1] = new State(stations[i].getState()); 
stateData = newstateData; } } // To make sure it is working, print out 
the states for ( State s : stateData ) System.out.println(s.getState()); 
// Now - go fix your State.java file so it will work with what I have 
done above! You need // to add the instance variables and methods (like 
getState to return the two character // state abbreviation. // Once you 
get this far you should be ready to start processing the daily.txt file.


-- 
Andrew J. Pounds, Ph.D.  (pounds_aj at mercer.edu)
Professor of Chemistry and Computer Science
Mercer University,  Macon, GA 31207   (478) 301-5627
http://faculty.mercer.edu/pounds_aj

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