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  1. <?php
  2. $times=500;			//허바 100개 뽑기
  3. $sum = 0;			//허바 뽑는데 쓴 지푸라기 총 개수
  4. $i=0;
  5. $list_item = array("머리","오른손","왼손","몸통","다리");	//허수아비 부위
  6. $list_item_count = array(0,0,0,0,0);						//허수아비 부위 개수
  7. $list_percent = array(0.1,33,17,44.6,5.3);					//허수아비 부위 확률
  8. do{
  9. 	$i=$i+1;
  10. 	$Straw = 0;									//새로 허바 뽑을때 마다 지푸라기 개수 초기화 해줘야 겠죠
  11. 	$list_item_count = array(0,0,0,0,0);		//새로 허바 뽑을때 마다 부위 개수 초기화 해줘야 겠죠
  12. 	$Straw_exc = 0;								//지푸라기 45개 될때마다 교환권 있죠
  13. 	do{											//허바 뽑기 시작
  14. 		$draw = Percent_draw($list_item,$list_percent);
  15. 		$Straw = $Straw+3;
  16. 		$Straw_exc = $Straw_exc+3;
  17. 		if($draw=="머리") $list_item_count[0]=$list_item_count[0]+1;
  18. 		if($draw=="오른손") $list_item_count[1]=$list_item_count[1]+1;
  19. 		if($draw=="왼손") $list_item_count[2]=$list_item_count[2]+1;
  20. 		if($draw=="몸통") $list_item_count[3]=$list_item_count[3]+1;
  21. 		if($draw=="다리") $list_item_count[4]=$list_item_count[4]+1;
  22. 		if($Straw_exc >= 45){					//지푸라기 45개 넘으면 교환해서도 받아갈수 있으니깐.....
  23. 			if($list_item_count[0] >1 && $list_item_count[1] >1 && $list_item_count[2] >1 && $list_item_count[3] >1) {
  24. 				$Straw_exc = $Straw_exc-45;		//교환하면 지푸라기 45개 빼줍니다.
  25. 				$list_item_count[4] = $list_item_count[4]+1;
  26. 			}
  27. 			if($list_item_count[0] >1 && $list_item_count[1] >1 && $list_item_count[2] >1 && $list_item_count[4] >1) {
  28. 				$Straw_exc = $Straw_exc-45;
  29. 				$list_item_count[3] = $list_item_count[3]+1;
  30. 			}
  31. 			if($list_item_count[0] >1 && $list_item_count[1] >1 && $list_item_count[3] >1 && $list_item_count[4] >1) {
  32. 				$Straw_exc = $Straw_exc-45;
  33. 				$list_item_count[2] = $list_item_count[2]+1;
  34. 			}
  35. 			if($list_item_count[0] >1 && $list_item_count[2] >1 && $list_item_count[3] >1 && $list_item_count[4] >1) {
  36. 				$Straw_exc = $Straw_exc-45;
  37. 				$list_item_count[1] = $list_item_count[1]+1;
  38. 			}
  39. 			if($list_item_count[1] >1 && $list_item_count[2] >1 && $list_item_count[3] >1 && $list_item_count[4] >1) {
  40. 				$Straw_exc = $Straw_exc-45;
  41. 				$list_item_count[0] = $list_item_count[0]+1;
  42. 			}
  43. 		}
  44. 		if($list_item_count[0] >0 && $list_item_count[1] >0 && $list_item_count[2] >0 && $list_item_count[3] >0 && $list_item_count[4] >0) {
  45. 			break;								//허수아비 헬멧 뽑았으면 반복문 탈출
  46. 		}
  47. 	}while(true);								//허바뽑기 끝
  48. 	$sum = $Straw+$sum;							//허바 뽑는데 사용한 지푸라기 개수 누적처리
  49. }while($i<$times);
  50. echo "허수아비 헬멧 ".$i."회 뽑기 평균값 : ".$sum/$i;
  51.  
  52. function Percent_draw($items_list,$percent_list) {
  53.     $range_now = 0;
  54.     $range_last = 0;
  55.     $decimal = 4;
  56.     if(count($percent_list) != count($items_list)) return false;
  57.     $draw = mt_rand(1,pow(10,$decimal)*array_sum($percent_list));
  58.     for($sequence=0; $sequence<count($percent_list); $sequence++) {
  59.         $range_now += pow(10,$decimal)*$percent_list[$sequence];
  60.         if($range_now >= $draw && $range_last < $draw) {
  61.             return $items_list[$sequence];
  62.         }else{
  63.             $range_last = $range_now;
  64.         }
  65.     }
  66. }
  67. ?>
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허수아비 헬멧 500회 뽑기 평균값 : 112.776
https://ideone.com/P5MYRj
language:
PHP (php 7.3.5)
created:
4 years ago
visibility:
public

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