ผลต่างระหว่างรุ่นของ "01204212/homework/sorting"
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* String formatting in Java: [https://docs.oracle.com/javase/tutorial/java/data/numberformat.html Tutorial], [https://docs.oracle.com/javase/7/docs/api/java/util/Formatter.html API] | * String formatting in Java: [https://docs.oracle.com/javase/tutorial/java/data/numberformat.html Tutorial], [https://docs.oracle.com/javase/7/docs/api/java/util/Formatter.html API] | ||
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รุ่นแก้ไขปัจจุบันเมื่อ 18:44, 13 พฤศจิกายน 2559
- This is part of 01204212
You are given the election result data from the US Election 2012 which Obama won. You have to produce a nice report on the vote for each county, sorted by the relative percentage of votes for Obama.
You program should read the data (in csv format) either by directly reading the file or reading the file from the standard input and produce the report in the format shown below. The csv data contains both vote counts for each county and each state, see the description below on how to throw away state data.
The data
Source: This data is taken from The Guardian.
Download: us-election.csv
Example of the first few lines:
State Postal,County Name,FIPS,Obama vote,Romney vote AK,Alaska,0,91696,121234 AK,Alaska,2000,91696,121234 AL,Alabama,0,793620,1252453 AL,Autauga,1001,6354,17366 AL,Baldwin,1003,18329,65772 AL,Barbour,1005,5873,5539 AL,Bibb,1007,2200,6131 AL,Blount,1009,2961,20741 AL,Bullock,1011,4058,1250 AL,Butler,1013,4367,5081 AL,Calhoun,1015,15500,30272 AL,Chambers,1017,6853,7596 AL,Cherokee,1019,2126,7494 AL,Chilton,1021,3391,13910
Data format: The file is csv (comma separated values), so each line contains many columns of data separated by commas. The first line contains column labels. The rows where FIPS = 0 are state data, so you should throw them away.
Output
Your program must sort the county data using the relative percentage of Obama votes against all Obama+Romney votes. (This is not the correct percentage as people also voted for other candidates.) Format the output as shown below. (See the additional info section for how to use string formatter in Java.)
Sample
County Obama Romney Obama% Romney% ------------------------------------------------------------------------------- Shannon (SD) 2922 188 93.955 6.045 District of Columbia (DC) 222332 17337 92.766 7.234 Penobscot Nation Vot Dst (ME) 253 23 91.667 8.333 Bronx (NY) 288378 26304 91.641 8.359 Provincetown (MA) 2121 210 90.991 9.009 Prince George's (MD) 317342 32236 90.779 9.221 Monhegan Plt. (ME) 49 5 90.741 9.259 Isle Au Haut (ME) 48 5 90.566 9.434 Petersburg (VA) 14377 1526 90.404 9.596 Indian Township Vtng Dst (ME) 208 25 89.270 10.730 Jefferson (MS) 3508 431 89.058 10.942 Baltimore City (MD) 201042 25501 88.743 11.257
