/
smallfact.cpp
114 lines (97 loc) · 1.73 KB
/
smallfact.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
#include<iostream>
#include<stdio.h>
#include"time.h"
using namespace std;
int sum[158];
int anum1[158];
int anum2[158];
int num1;
int num2;
int carry;
//int i=0,j=0;
int cnum1=0,cnum2=0;
void multiply(int multiplier)
{
num2 = multiplier;
cnum2=0;
carry=0;
for(int i=0;i<cnum1;i++)
{
sum[i]=anum1[i]*num2;
int temp = sum[i];
sum[i]=(sum[i]+carry)%10;
carry=(temp+carry)/10;
cnum2++;
}
while(carry!=0)
{
int temp = sum[cnum2];
sum[cnum2]=(sum[cnum2]+carry)%10;
carry=(temp+carry)/10;
cnum2++;
}
/* do{
int temp = sum[i];
sum[i]=(sum[i]+carry)%10;
carry=(temp+carry)/10;
cnum2++;
i++;
}while(i<cnum1 || carry!=0 );
*/
//sum[cnum2]=carry;
for(int i=cnum2-1;i>=0;i--)
{
anum1[i]=sum[i];
}
cnum1=cnum2;
}
void fact(int limit)
{
for(int i=0;i<158;i++)
{
sum[i]=0;
}
num1 = 1;
while(num1!=0)
{
anum1[cnum1]=num1%10;
num1/=10;
cnum1++;
}
for(int i=1;i<=limit;i++)
{
multiply(i);
}
for(int i=cnum2-1;i>=0;i--)
{
printf("%d",anum1[i]);
}
printf("%c",'\n');
}
int main()
{
clock_t tStart = clock();
int cases;
int testcase;
//scanf("%d",&cases);
cases=100;
int nums[cases];
for(int i=0;i<cases;i++)
{
nums[i]=100;
//scanf("%d",&nums[i]);
}
for(int i=0;i<cases;i++)
{
cnum1=0;
cnum2=0;
if(nums[i]==0)
{
cout<<1<<endl;
continue;
}
fact(nums[i]);
}
printf("Time taken: %.2fs\n", (double)(clock() - tStart)/CLOCKS_PER_SEC);
return 0;
}