PHP实现二维数组中的查找算法小结

<?php
function Find($target, $array)
{
  $m_y = count($array['0']);
  $m_x = count($array);
  for($i=$m_x-1;$i>=0;$i--){
    if($array[$i]['0'] < $target){
      for($j=1;$j<$m_y;$j++){
        if($array[$i][$j] == $target){
          return 1;
          break;
        }
      }
    }
    if($array[$i]['0'] == $target){
      return 1;
      break;
    }
  }
}

function Find($target, $array)
{
  $m_y = count($array['0']);
  $m_x = count($array);
  $i = 0;
    for($i =$m_x-1,$j=0;$i>=0&&$j<$m_y;){
      if($array[$i][$j]<$target){
        $j++;
        continue;
      }
      if($array[$i][$j]>$target){
        $i--;
        continue;
      }
      if($array[$i][$j] == $target){
        return 1;
      }
    }
}

function Find($target, $array)
{
  $m_y = count($array['0']);
  $m_x = count($array);
  $i = $m_x-1;
  $j = 0;
  while(1){
    if($array[$i][$j]<$target){
      $j++;
    }
    if($array[$i][$j]>$target){
      $i--;
    }
    if($array[$i][$j] == $target){
      return 1;
    }
    if($i == 0||$j == $m_y-1){
      return 0;
    }
  }
}