月度归档： 2008年10月

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17

public static boolean fermat_prime(int n){
	int a=2,power=n-1,other=1;
	while(power>1){
		if(power%2==1){
			other*=a;
			other%=n;
		}
		power/=2;
		a=a*a%n;
	}
	if(a*other%n==1){
		return true;
	}else{
		return false;
	}
 
}

public static boolean fermat_prime(int n){ int a=2,power=n-1,other=1; while(power>1){ if(power%2==1){ other*=a; other%=n; } power/=2; a=a*a%n; } if(a*other%n==1){ return true; }else{ return false; } }

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

#!/usr/bin/env python
#coding:utf-8
import datetime
#一般的时间计算
d1 = datetime.datetime(2008, 10, 05,15,50)
d2 = datetime.datetime(2008, 10, 03,21,9,0,0)
d3 = datetime.timedelta(microseconds=5000)
print (d1-d2).microseconds
print (d1-d2).seconds
print (d1-d2).days
print d3
#时区转换，当前系统所在时区+1
d = datetime.datetime.now()
d = d + datetime.timedelta(seconds=3600)
print d
print d.ctime()

#!/usr/bin/env python #coding:utf-8 import datetime #一般的时间计算 d1 = datetime.datetime(2008, 10, 05,15,50) d2 = datetime.datetime(2008, 10, 03,21,9,0,0) d3 = datetime.timedelta(microseconds=5000) print (d1-d2).microseconds print (d1-d2).seconds print (d1-d2).days print d3 #时区转换，当前系统所在时区+1 d = datetime.datetime.now() d = d + datetime.timedelta(seconds=3600) print d print d.ctime()