题解 | #两数之和#
两数之和
http://www.nowcoder.com/practice/20ef0972485e41019e39543e8e895b7f
//遍历数组,查找差值所在数组的键值 function twoSum( $numbers , $target ) { // write code here $arr=array(); $arr_del=$numbers; for($i=0;$i<count($numbers);$i++){ unset($arr_del[$i]); if(array_search($target-$numbers[$i],$arr_del)!==false && $i<array_search($target-$numbers[$i],$arr_del)){ array_push($arr,$i+1,array_search($target-$numbers[$i],$arr_del)+1); return $arr; } } return $arr; }