awk排序做業

輸入：給定一個hotelinfo文件，文件格式以下：

shanghai_city_7208      上海全季酒店淮海路店

shanghai_city_14744     錦江之星上海金山城市沙灘店

jinan_2794      章丘市大衆旅館

carmel_ca_5     Carmel River Inn

格式說明：

1. 一共兩列，之間使用tab分隔

2. 第一列是酒店代號，第二列是酒店名稱

3. 以shanghai_city_7208爲例，前面的shanghai_city表明城市

要求以下：

1. 輸出一個文件，和hotelinfo格式同樣，可是按照酒店代號進行降序排序

2. 輸出一個文件，兩列，第一列是城市代號，第二列是這個城市下的酒店數，可是按照酒店數進行降序排序

文件以下：

hotelinfo.txt

1.先表示我看錯題目了，我覺得是按照第一列的最後的數字排序，瞬間複雜度增長，因而我寫了一段蛋疼的awk程序。

首先對文本進行排序處理,awk程序爲hotelsort.awk

BEGIN{FS="_";ORS="";content=""}
#將原來的文件按照「_」切分，確保酒店的數字代碼在空格的第二列
{for(i=1;i<(NF-1);i++) content=content""$i"_";content=content""$(NF-1)" "$NF"\n"}
#用sort命令對酒店代碼排序
END{printf("%s", content) | "sort -rn -k 2 > hotelsorted.txt"}

執行

awk -f hotelsort.awk hotelinfo.txt

此時hotelsorted.txt以下

falling_waters_wv 1 Holiday Inn Express MARTINSBURG-NORTH
fairlee_vt 1    Silver Maple Lodge & Cottages
etroubles_ita 1 Hotel Beau Sejour
escanaba_mi 1   Comfort Suites Escanaba
elk_river_mn 1  Country Inn & Suites By Carlson Elk River
eckelsheim_ger 1    Hotel Klosterhof Eckelsheim
dundalk_il 1    鄧多克皇冠假日酒店
delwara_ind 1   Devi Garh
deidesheim_ger 1    Steigenberger Hotel Deidesheim
colton_ca 1 Holiday Inn Express Colton
chita 1 Arkadia
burbank_ca 1    Burbank-Media Center

最後格式化一下這個文件

awk '{print $1"_"$2" "$3}' hotelsorted.txt > hotelsortedformat.txt

獲得最後結果

fancy_gap_va_1 Days
falling_waters_wv_1 Holiday
fairlee_vt_1 Silver
etroubles_ita_1 Hotel
escanaba_mi_1 Comfort
elk_river_mn_1 Country
eckelsheim_ger_1 Hotel
dundalk_il_1 鄧多克皇冠假日酒店
delwara_ind_1 Devi
deidesheim_ger_1 Steigenberger
colton_ca_1 Holiday
chita_1 Arkadia
burbank_ca_1 Burbank-Media

收工

2. 跟第一題差很少，寫個awk  hotelsum.awk

BEGIN{FS="_"}
#跟第一題相似，用數組統計個數
{citycode="";for(i=1;i<(NF-1);i++) citycode=citycode""$i"_";if(NF>2)citycode=citycode""$(NF-1);sum[citycode]++}
END{for(city in sum) printf("%s\t%4d\n", city, sum[city])}

而後調用一下並排序

awk -f hotelsum.awk hotelinfo.txt | sort -t " " -k 2 -nr

結果：

torquay_vic      43
tel_aviv      33
rovinj_cro      30
torremolinos_esp      29
the_hague      17
torquay_uk      16
paris_city      15
telford_uk      13
london_england      11
los_angeles_usa       9
fairview_pa       9
tarragona_esp       8
beijing_city       8
tampere_fi       7
shanghai_city       7
san_antonio_usa       7
suzhou_jiangsu       6
manchester_usa       6
tossa_de_mar_spa       5
timmendorfer_strand       5
terracina_ita       5
riccione_ita       5
chongqing_city       5
yichun_jiangxi       4
west_memphis_ar       4
sydney_australia       4
rovaniemi_fi       4
dover_de       4
anderson_sc       4
ubud_id       3
taunton_ma       3
taizhou_zhejiang       3
robinson_il       3
okehampton_uk       3
melbourne_australia       3
las_vegas       3
koh_phuket_tha       3
harrisburg_pa       3
hamilton_on       3
gardner_ks       3
faulkton_sd       3
beppu_jp       3
west_columbia_tx       2
volos_gre       2
thunder_bay_on       2
the_entrance_nsw       2
teignmouth_uk       2
pittsfield_il       2
newcastle_united_kingdom       2
motta_camastra       2
montvale_nj       2
montauk_ny       2
lindos_gre       2
liberal_ks       2
lakeside_ca       2
fort_washington_pa       2
fillmore_ut       2
escanaba_mi       2
birmingham_usa       2
big_island       2
zanzibar_tza       1
yulin_shanxi_02       1
yulin_guangxi       1
ypsilanti_mi       1
yelverton_uk       1
wigston_uk       1
wangerooge_ger       1
vysoke_tatry_sk       1
trento_ita       1
the_rocks_nsw       1
tamworth_uk       1
stadtoldendorf_ger       1
somerset_uk       1
singapore_city       1
shipley_uk       1
shenandoah_tx       1
schmallenberg_ger       1
santa_elena_gt       1
san_diego       1
salado_tx       1
saint_petersburg       1
rock_port_mo       1
riverside_il       1
richmond_vt       1
ravenna_italy       1
prestwick_uk       1
piste_mex       1
peoria_az       1
pensacola_fl       1
painesville_oh       1
osnabruck_ger       1
new_york_city       1
new_delhi       1
nelson_bay       1
montclair_nj       1
montclair_ca       1
mexico_city       1
menlo_park_ca       1
mattoon_il       1
mason_wv       1
madonna_di_campiglio       1
lone_tree_co       1
london_England       1
livingston_nj       1
lincoln_uk       1
lakeside_az       1
krumbach_ger       1
kota_kinabalu       1
koh_samui       1
kernersville_nc       1
kansas_city       1
jackson_ms       1
huizhou_guangdong       1
huelva_esp       1
hongkong_city       1
himeji_jp       1
hillsborough_nc       1
hille_ger       1
hershey_pa       1
havelock_north_nz       1
hakodate_jp       1
grand_rapids       1
glendale_ca       1
glen_allen_va       1
galena_park_tx       1
fuzhou_fujian       1
ft_lauderdale       1
french_lick_in       1
frazer_pa       1
fondi_ita       1
fancy_gap_va       1
falling_waters_wv       1
fairport_ny       1
fairlee_vt       1
etroubles_ita       1
elk_river_mn       1
eckelsheim_ger       1
dundalk_il       1
denpasar_bali       1
delwara_ind       1
deidesheim_ger       1
davie_fl       1
covington_kt       1
corpus_christi_tx       1
colton_ca       1
cefalu_ita       1
cavriglia_ita       1
carmel_ca       1
campinas_bra       1
burbank_ca       1
budapest_city       1
brooklyn_center_mn       1
bratislava_city       1
aberdeen_united_kingdom       1