Kia pehea te te te kōmaka huānga?

E mea pinepine, no te whakaoti etahi mahi e hiahiatia ana ki te hanga i te kōmaka o raraunga rongoa e te i roto i te ngohi. He aha te kōmaka huānga? Here, mo te tauira, te tākaro i kāri, whakatakotoria iwi ratou kāri i runga i te uara me te take. hanga tenei reira taea ki te whakatau he aha te tahi atu kāri hapa ratou. A i roto i nga papakupu whakahau katoa pūrārangi. He maha tauira. Kōmaka - ki te whakatikatika etahi maha o ngā i roto i tetahi tikanga i runga i te papa whenua i tohua. rapu tika maha kōmaka huānga. Ki tenei mutunga, e whakamahia tikanga rerekē. Hei matau ratou ngako, tatu ki whakaaro i roto i te taipitopito he maha o ngā huarahi.

I aha pūtake mahi

He mea nui ki te mahino e ngā te ngohi o maha takirua o taviri me ngā uara motuhake. Kōmaka huānga i roto i C mahi te ki te awhina o pinepine o ngā rārangi o te waehere, me te reo o PHP, tutuki tenei te kotahi anake whakahau ohie. Kōmaka huānga Ko taea i runga i te pūtake o te mau taviri uara ranei. Tonu ko reira taea ki te tuwha i te uara, ka mahue ratou ki ngā taviri faaue hou ranei.

Ko te rerekētanga matua o ngā mahi

Kōmaka i te ngohi o PHP he taea te whakamahi i ngā mahi. Kia titiro a ki te pehea rerekē ratou:

- Kei te kōmaka ētahi mahi huānga e āhuatanga matua o reira, me etahi atu - i runga i ngā uara.

- i reira he raupapa ahua rerekē: e heke iho, tipu, māori, tau, pūrārangi, ngā kaiwhakamahi matapōkere i tohua ranei.

- E taea ki te whakaora i muri i kōmaka hononga i waenganui i te kī, me te uara ētahi mahi. Ko reira te mea he āhuatanga i roto i nei e te mau taviri e tautuhi ki te uara hou.

- ia mahi whakarato i te whakarerekētanga o te ngohi haere. Kōmaka tārua, e kore ratou e hoki.

- He kāore te raupapa ahua, ka whakatau i te mahi nga mea timatanga e rua rite rite. Tenei kōmaka iu.

Ētahi huānga ahua mahi i roto i te PHP

Kōmaka () me rsort (). Kōmaka () whakahaua te ngohi i roto i te ana'iraa piapa. Kia mahara tatou e tenei mahi, ko te take tairongo. Kei te kōmaka reira e te uara hāunga te mau taviri. Rsort () ka kōmaka i te raupapa whakamuri, rawa, kia rite ki nga uara me waihotia te mau taviri.

Asort () - ko reira tetahi o nga mahi o te tiaki i te hononga o te mau taviri, me ngā uara. Ko reira whai hua hoki ngā huānga herekore, i te mea e nui.

I roto i te tauira i whiriwhiri ingoa matua o te hua, me te uara - ko te utu tenei. Kei te kake atu Kōmaka utu. Ki te hiahia koe ki te kōmaka i te ingoa o hua, e hiahia ana koe ki te mahi ksort (), e hanga kōmaka i mau taviri. Arsort () Ka kōmaka te ngohi kotahi-ahu ki taupū (whakamārama) heke uara. Krsort () heke tūemi ahua matua.

Ko te ngohi e rua-ahu

He ngohi e rua-ahu ngā kōmaka. Ka taea te mahi i tēnei i roto i ngā huarahi rerekē. PHP e te whai wāhi ki te whakarite e rua tau e rua aho ranei. I roto i tetahi ngohi maha-ahu, ia huānga o te ngohi. I roto i te PHP, ki te whakatairite ngā huānga maha, e hiahia ana koe ki te waihanga i tētahi tikanga motuhake. Fakakaukau angé ki he ngohi e rua-ahu, e pupuru ana i te ingoa haapotohia o hua, ingoa tonu, me te utu. Ka taea te kōmaka te huānga ngohi i roto i te ana'iraa piapa o te ingoa haapotohia.

I roto i te tauira i roto i to tatou ingoa o te mahi whakataurite (whakarite). E 2 tohenga - x, y. Me tango i te mahi e rua ngā uara, ka whakatau i te tikanga. Nga tawhā x, y - 2 ngohi e te hunga i roto i te ngohi y matua. Hei whakarite i te whakaahuatanga-nga āhuatanga o te huānga, i haere ki roto ki te mahi, e hiahia ana koe i te taurangi $ x [1], $ y [1]. I roto i te rārangi return1 ko te uara hoki ki te waehere e huaina te mahi. I roto i to tatou ngohi kōmaka hāngai usort () mahi. Kōmaka haere rite ki te tikanga, e whakaahua ana i te () mahi whakataurite.

Na ka waiho kōmaka huānga i roto i PHP hoki ki a koutou matau.