回答編集履歴
3
注意書き追加
test
CHANGED
|
@@ -209,3 +209,9 @@
|
|
|
209
209
|
}
|
|
210
210
|
|
|
211
211
|
```
|
|
212
|
+
|
|
213
|
+
|
|
214
|
+
|
|
215
|
+
なお, このコードでは整数化の為に "100分の1.5" 等ではなく "1000分の15" 等となっています.
|
|
216
|
+
|
|
217
|
+
つまり, 100 回やっても 1.5 回出るかどうかは分からないが 1000 回やれば必ず 15 回出ます.
|
2
コード追加
test
CHANGED
|
@@ -3,3 +3,209 @@
|
|
|
3
3
|
|
|
4
4
|
|
|
5
5
|
もし確率通り, 例えば10%で出るとなっていたら10回に1回は必ず出るようにするのでしたら, 福引のガラガラのように「出したモノは以降抽選から外す」ようにする等が必要かと思います.
|
|
6
|
+
|
|
7
|
+
|
|
8
|
+
|
|
9
|
+
以下は, ファイル読み込みやパラメータ(argv)によるモンスターの指定などは省いて(固定にして)います.
|
|
10
|
+
|
|
11
|
+
```c
|
|
12
|
+
|
|
13
|
+
#include <stdio.h>
|
|
14
|
+
|
|
15
|
+
#include <stdlib.h>
|
|
16
|
+
|
|
17
|
+
#include <string.h>
|
|
18
|
+
|
|
19
|
+
|
|
20
|
+
|
|
21
|
+
typedef struct data {
|
|
22
|
+
|
|
23
|
+
char name[32];
|
|
24
|
+
|
|
25
|
+
int probability; //整数化のため10倍値
|
|
26
|
+
|
|
27
|
+
} Data;
|
|
28
|
+
|
|
29
|
+
Data data[] = {
|
|
30
|
+
|
|
31
|
+
{"Dantalion", 15},
|
|
32
|
+
|
|
33
|
+
{"Lune", 15},
|
|
34
|
+
|
|
35
|
+
{"Silvi", 15},
|
|
36
|
+
|
|
37
|
+
{"Paimon", 15},
|
|
38
|
+
|
|
39
|
+
{"Fenrir-wiz", 15},
|
|
40
|
+
|
|
41
|
+
{"Yog-sothose", 15},
|
|
42
|
+
|
|
43
|
+
{"Madou", 15},
|
|
44
|
+
|
|
45
|
+
{"Echidna-SALA", 15},
|
|
46
|
+
|
|
47
|
+
{"JakotsuHime", 15},
|
|
48
|
+
|
|
49
|
+
{"Leeche", 15},
|
|
50
|
+
|
|
51
|
+
{"HakuMu", 15},
|
|
52
|
+
|
|
53
|
+
{"Zera", 15},
|
|
54
|
+
|
|
55
|
+
{"Kuzankoh", 15},
|
|
56
|
+
|
|
57
|
+
{"Salene", 15},
|
|
58
|
+
|
|
59
|
+
{"Valkyrie-CIEL",15},
|
|
60
|
+
|
|
61
|
+
{"Zeus-GIGA", 15},
|
|
62
|
+
|
|
63
|
+
{"Athena-NON", 15},
|
|
64
|
+
|
|
65
|
+
{"GaranDoushi", 15},
|
|
66
|
+
|
|
67
|
+
{"Fagan-RAI", 15},
|
|
68
|
+
|
|
69
|
+
{"Velois", 15},
|
|
70
|
+
|
|
71
|
+
{"Chutenmaru", 15},
|
|
72
|
+
|
|
73
|
+
{"Xerog-CORE", 15},
|
|
74
|
+
|
|
75
|
+
{"Minerva", 67},
|
|
76
|
+
|
|
77
|
+
{"Frey", 67},
|
|
78
|
+
|
|
79
|
+
{"Ison&Isuna", 67},
|
|
80
|
+
|
|
81
|
+
{"Andromeda", 67},
|
|
82
|
+
|
|
83
|
+
{"Bastet", 67},
|
|
84
|
+
|
|
85
|
+
{"Parvati", 67},
|
|
86
|
+
|
|
87
|
+
{"Venus", 67},
|
|
88
|
+
|
|
89
|
+
{"Ganesha", 67},
|
|
90
|
+
|
|
91
|
+
{"Tsukuyomi", 67},
|
|
92
|
+
|
|
93
|
+
{"Haku", 67},
|
|
94
|
+
|
|
95
|
+
{"", -1} //EOD
|
|
96
|
+
|
|
97
|
+
};
|
|
98
|
+
|
|
99
|
+
|
|
100
|
+
|
|
101
|
+
#define TIMES 1000000
|
|
102
|
+
|
|
103
|
+
|
|
104
|
+
|
|
105
|
+
int initLotteryArray(int *lotteryArray, int total) {
|
|
106
|
+
|
|
107
|
+
int i, j, k;
|
|
108
|
+
|
|
109
|
+
|
|
110
|
+
|
|
111
|
+
for(i=0, k=0; data[i].probability>0; i++) {
|
|
112
|
+
|
|
113
|
+
for(j=0; j<data[i].probability; j++, k++) lotteryArray[k] = i;
|
|
114
|
+
|
|
115
|
+
}
|
|
116
|
+
|
|
117
|
+
return total;
|
|
118
|
+
|
|
119
|
+
}
|
|
120
|
+
|
|
121
|
+
|
|
122
|
+
|
|
123
|
+
char *getMonster(int index, int *lotteryArray, int *lotteryCounts, int total) {
|
|
124
|
+
|
|
125
|
+
int i;
|
|
126
|
+
|
|
127
|
+
char *monster;
|
|
128
|
+
|
|
129
|
+
|
|
130
|
+
|
|
131
|
+
monster = data[lotteryArray[index]].name;
|
|
132
|
+
|
|
133
|
+
if(--(*lotteryCounts) <= 0) {
|
|
134
|
+
|
|
135
|
+
*lotteryCounts = initLotteryArray(lotteryArray, total);
|
|
136
|
+
|
|
137
|
+
} else {
|
|
138
|
+
|
|
139
|
+
//前詰め
|
|
140
|
+
|
|
141
|
+
for(i=index; i<*lotteryCounts; i++) lotteryArray[i] = lotteryArray[i+1];
|
|
142
|
+
|
|
143
|
+
}
|
|
144
|
+
|
|
145
|
+
return monster;
|
|
146
|
+
|
|
147
|
+
}
|
|
148
|
+
|
|
149
|
+
|
|
150
|
+
|
|
151
|
+
int getRandomInt(int lotteryCounts) {
|
|
152
|
+
|
|
153
|
+
return rand() % lotteryCounts;
|
|
154
|
+
|
|
155
|
+
}
|
|
156
|
+
|
|
157
|
+
|
|
158
|
+
|
|
159
|
+
int main() {
|
|
160
|
+
|
|
161
|
+
int i, total = 0, index;
|
|
162
|
+
|
|
163
|
+
int *lotteryArray;
|
|
164
|
+
|
|
165
|
+
int lotteryCounts;
|
|
166
|
+
|
|
167
|
+
char *monster;
|
|
168
|
+
|
|
169
|
+
int counter = 0;
|
|
170
|
+
|
|
171
|
+
double avg;
|
|
172
|
+
|
|
173
|
+
|
|
174
|
+
|
|
175
|
+
for(i=0; data[i].probability>0; i++) total += data[i].probability;
|
|
176
|
+
|
|
177
|
+
|
|
178
|
+
|
|
179
|
+
lotteryArray = (int *)malloc(sizeof(int)*total);
|
|
180
|
+
|
|
181
|
+
lotteryCounts = initLotteryArray(lotteryArray, total);
|
|
182
|
+
|
|
183
|
+
|
|
184
|
+
|
|
185
|
+
for(i=0; i<TIMES; i++){
|
|
186
|
+
|
|
187
|
+
index = getRandomInt(lotteryCounts);
|
|
188
|
+
|
|
189
|
+
monster = getMonster(index, lotteryArray, &lotteryCounts, total);
|
|
190
|
+
|
|
191
|
+
if(strcmp(monster, "Athena-NON") == 0) counter ++;
|
|
192
|
+
|
|
193
|
+
}
|
|
194
|
+
|
|
195
|
+
|
|
196
|
+
|
|
197
|
+
free(lotteryArray);
|
|
198
|
+
|
|
199
|
+
|
|
200
|
+
|
|
201
|
+
avg = (double)counter / (double)TIMES;
|
|
202
|
+
|
|
203
|
+
printf("排出率: %lf％ 排出体数: %d体\n", avg * 100, counter);
|
|
204
|
+
|
|
205
|
+
|
|
206
|
+
|
|
207
|
+
return 0;
|
|
208
|
+
|
|
209
|
+
}
|
|
210
|
+
|
|
211
|
+
```
|
1
追加
test
CHANGED
|
@@ -1 +1,5 @@
|
|
|
1
1
|
確率はあくまで可能性であって,「〇回やったら必ず決めた割合になる」とは言えないと思いますが.
|
|
2
|
+
|
|
3
|
+
|
|
4
|
+
|
|
5
|
+
もし確率通り, 例えば10%で出るとなっていたら10回に1回は必ず出るようにするのでしたら, 福引のガラガラのように「出したモノは以降抽選から外す」ようにする等が必要かと思います.
|