The input files for all levels can be found under the resouce folder where also the output files get saved to.
Find the minimum and the maximum for each type of value, except for the altitude where we already know the minimum is 0 (generally, but the slice of data you see might not have it). Float values are compared with a maximum allowed error of 10-5
| Input | Output | |
|---|---|---|
| Format | N timestamp,lat,long,altitude (repeats N times) |
minTimestamp maxTimestamp minLat maxLat minLong maxLong maxAltitude |
| Types | N (int) Number of flight entries that follow timestamp (int) Amount of seconds since a fixed point in time lat (float) North latitude of the coordinate. In degrees long (float) East longitude of the coordinate. In degrees altitude (float) Meters above the sea level |
minTimestamp (int) maxTimestamp (int) minLat (float) maxLat (float) minLong (float) maxLong (float) maxAltitude (float) |
| Example | 5 136932,48.297,16.503,1379 144068,45.262,39.702,1866 212782,41.287,2.089,0 370277,43.959,21.427,11582 578963,51.531,19.923,10058 |
136932 578963 41.287 51.531 2.089 39.702 11582 |
Repeated for each pair of airports, A and B, that have at least one flight going from A to B. Direction matters Sort alphabetically by A and then B
- Each entry from the previous level will receive 3 new fields.
- For each entry you now know where the plane is coming from, where it’s going and when it took off.
- The starting and destination airports are given as strings, denoting their IATA codes.
- The takeoff time is given as a timestamp.
- Based on this data, for each pair of airports, A and B, count the number of unique flights that start from A and go to B.
- Output all pairs that have at least one flight, and the number of flights between them
- Sort them alphabetically by A and then B.
| Input | Output | |
|---|---|---|
| Format | N timestamp,lat,long,altitude,start,destination,takeoff (repeats N times) |
A B flightCount |
| Types | N (int) Number of flight entries that follow timestamp (int) Amount of seconds since a fixed point in time lat (float) North latitude of the coordinate. In degrees long (float) East longitude of the coordinate. In degrees altitude (float) Meters above the sea level start (string) IATA code of the start airport destination (string) IATA code of the destination airport takeoff (int) Timestamp at which the flight took off |
A (string) IATA code of the start airport B (string) IATA code of the destination airport flightCount (int) Number of flights that start in A and go to B |
| Example | 10 34103,51.331,-0.393,3962.0,LPPT,EGLL,26949 107649,38.024,-2.556,10972.0,LEMG,ESSA,106411 113591,49.003,17.515,10363.0,LLBG,EDDB,102016 223214,53.469,25.524,9448.0,LSGG,UUEE,215051 294080,54.146,8.657,11574.0,EKCH,EGKK,292283 375909,48.051,0.808,11887.0,EGGW,LEBL,373584 636037,53.141,-0.391,10058.0,EIDW,LZIB,634073 649847,53.564,9.846,1828.0,EDDH,EGLL,649106 652143,46.948,-1.463,10675.0,EBBR,LPPT,648044 659210,52.59,6.392,10363.0,EKCH,EBBR,655729 |
EBBR LPPT 1 EDDH EGLL 1 EGGW LEBL 1 EIDW LZIB 1 EKCH EBBR 1 EKCH EGKK 1 LEMG ESSA 1 LLBG EDDB 1 LPPT EGLL 1 LSGG UUEE 1 |