PHP打印环状数圈
/** * 二维数组排序 * @param array $array */ function sort_recursive(&$array){ foreach($array as $key=>$edge){ ksort($edge,true); $array[$key]=$edge; } ksort($array,true); } /** * 生成一圈环状数字 * @param array $cotainer 二维数组,包含生成的圈 * @param int $start_value 该圈的起始值 * @param int $x 该圈的偏移值 * @param int $grids_edge 每条边的数字个数 */ function generate(&$container,$start_value,$x,$grids_edge){ $rec_times=ceil($grids_edge/2); $center=$grids_edge&1?false:$start_value+4*$rec_times*($rec_times+1); if($center){ $index=$x+ceil($grids_edge/2); $container[$index][$index]=$center; } for($i=0;$iarray(1,6), 25=>array(2,4), 41=>array(3,2), ); /* $data=array( 1 =>array(1,2), ); $data=array( 1 =>array(1,5), 21=>array(2,3), 33=>array(3,1), ); $data=array( 1 =>array(1,3), 13=>array(2,1), ); */ foreach($data as $key=>$val){ generate($container,$key,$val[0],$val[1]); } sort_recursive($container); $table=''; foreach($container as $key=>$edge){ $table.=''; foreach($edge as $val){ $table.=''.$val.''; } $table.=''; } $table.=''; echo $table;
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