这是网上很火的2018刑侦推理试题，作为程序员当然想的是如何用编程得出答案.
1 <?php 2 error_reporting(0); 3 $option = array('A','B','C','D'); 4 function check_1($data){ 5 return true; 6 } 7 8 function check_2($data){ 9 $question = array('A'=>'C','B'=>'D','C'=>'A','D'=>'B'); 10 if($question[$data[2]] == $data[5]) return true; 11 return false; 12 } 13 14 function check_3($data){ 15 $question = array('A'=>$data[3],'B'=>$data[6],'C'=>$data[2],'D'=>$data[4]); 16 $answer = $question[$data[3]]; 17 unset($question[$data[3]]); 18 if(!in_array($answer,$question)) return true; 19 return false; 20 } 21 22 function check_4($data){ 23 $question = array('A'=>$data[1]==$data[5],'B'=>$data[2]==$data[7],'C'=>$data[1]==$data[9],'D'=>$data[6]==$data[10]); 24 return $question[$data[4]]; 25 } 26 27 function check_5($data){ 28 $question = array('A'=>$data[8],'B'=>$data[4],'C'=>$data[9],'D'=>$data[7]); 29 if($question[$data[5]] == $data[5]) return true; 30 return false; 31 } 32 33 function check_6($data){ 34 $question = array('A'=>$data[2]==$data[4] && $data[4]==$data[8],'B'=>$data[1]==$data[6] && $data[6]==$data[8],'C'=>$data[3]==$data[10] && $data[10]==$data[8],'D'=>$data[5]==$data[9] && $data[9]=$data[8]); 35 return $question[$data[6]]; 36 } 37 38 function check_7($data){ 39 $question = array('A'=>'C','B'=>'B','C'=>'A','D'=>'D'); 40 $count = array_count_values($data); 41 arsort($count); 42 if(array_pop(array_keys($count))==$question[$data[7]]) return true; 43 return false; 44 } 45 46 function check_8($data){ 47 $map = array('A'=>1,'B'=>2,'C'=>3,'D'=>4); 48 $question = array('A'=>$data[7],'B'=>$data['5'],'C'=>$data['2'],'D'=>$data['10']); 49 if(abs($map[$data[1]] - $map[$question[$data[8]]])>1) return true; 50 return false; 51 } 52 53 function check_9($data){ 54 $question = array('A'=>$data[6],'B'=>$data[10],'C'=>$data[2],'D'=>$data[9]); 55 if(($question[$data[9]] == $data[5])!=($data[1] == $data[6]))return true; 56 return false; 57 58 } 59 60 function check_10($data){ 61 $question = array('A'=>3,'B'=>2,'C'=>4,'D'=>1); 62 $count = array_count_values($data); 63 arsort($count); 64 $min = array_pop($count); 65 asort($count); 66 $max = array_pop($count); 67 if($question[$data[10]] == $max-$min) return true; 68 return false; 69 } 70 71 foreach($option as $v[1]){ 72 foreach($option as $v[2]){ 73 foreach($option as $v[3]){ 74 foreach($option as $v[4]){ 75 foreach($option as $v[5]){ 76 foreach($option as $v[6]){ 77 foreach($option as $v[7]){ 78 foreach($option as $v[8]){ 79 foreach($option as $v[9]){ 80 foreach($option as $v[10]){ 81 for($i=1;$i<=10;$i++){ 82 $answer[$i] = $v[$i]; 83 } 84 for($i=1;$i<=10;$i++){ 85 $func = "check_".$i; 86 if(!$func($answer)) break; 87 } 88 if($i == 11) {echo implode(' ',$answer)." ";die;} 89 } 90 } 91 } 92 } 93 } 94 } 95 } 96 } 97 } 98 }
结果输出：B C A C A C D A B A