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PHP多維數(shù)組排序

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千萬里不及你 2019-05-20 10:01:03

給定一個(gè)二維數(shù)組，如下,請(qǐng)對(duì)它的鍵/值進(jìn)行排序。注意：5,2,7對(duì)應(yīng)的值里的數(shù)組不確定的，會(huì)很大eg:$arr=[5=>[1,4,8,98,3,33,17,76,63],2=>[3,12,5,88,101,32,22,77,1],7=>[5,6,90,31,22,21,88,36,102]];排序之后的數(shù)組為：$arr=[2=>[1,3,5,12,22,32,77,88,101],5=>[1,3,4,8,17,33,63,76,98],7=>[5,6,21,22,31,36,88,90,102],];請(qǐng)問如何實(shí)現(xiàn)排序算法，不允許使用php自帶的函數(shù)，如sort、ksort等？

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$arr=[5=>[1,4,8,98,3,33,17,76,63],2=>[3,12,5,88,101,32,22,77,1],7=>[5,6,90,31,22,21,88,36,102]];ksort($arr);$result=array_map(function($item){sort($item);return$item;},$arr);var_dump($result);結(jié)果array(3){[2]=>array(9){[0]=>int(1)[1]=>int(3)[2]=>int(5)[3]=>int(12)[4]=>int(22)[5]=>int(32)[6]=>int(77)[7]=>int(88)[8]=>int(101)}[5]=>array(9){[0]=>int(1)[1]=>int(3)[2]=>int(4)[3]=>int(8)[4]=>int(17)[5]=>int(33)[6]=>int(63)[7]=>int(76)[8]=>int(98)}[7]=>array(9){[0]=>int(5)[1]=>int(6)[2]=>int(21)[3]=>int(22)[4]=>int(31)[5]=>int(36)[6]=>int(88)[7]=>int(90)[8]=>int(102)}}