than M and M (the two numbers have only a common approx. 1 is called an interol ). For convenience, we usually use the mark (m) to represent this function (known as the Euler function ).
Euler points out that if a and m are mutually unique
We can see that when M is a prime number, Phi (m) is equal to m-1 (all positive integers smaller than m are mutually prime with m), so it is a promotion of Fermat's theorem. The proof of the theorem is almost the same as that of the Fermat small theorem, but
/home/user1#Represents the current user bit super user, $ or normal userFormat:命令 【选项】【参数】Query Directory Contents commandls 【选项】【目录/文件】ls -l ~/desktop[emailprotected] 3 Jeff staff 102 3 8 11:08 $RECYCLE.BINdrwxr-xr-x 6 Jeff staff 204 4 9 16:13 A*算法drwxr-xr-x 10 Jeff staff 340 4 9 16:14 Learning_Python-rw-r--r-- 1 Jeff staff 1441 3 30 11:43 SSH设置-rw-r[emailprotected] 1 Jeff staff 48640 3 8 11:08 Thumbs.dbdrwxr-xr-x 10
to outputD[size]: Using decimal to output data, each integer occupies size bytes;F[size]: Use floating point value (floating) to output data, each number occupies size bytes;O[size]: Use octal (octal) to output data. Each integer occupies a size bytes;X[size]: Use 16 carry (hexadecimal) to output data, each integer occupies size bytes;Example one: Please use the/USR/BIN/PASSWD content in ASCII way to show!# od-t C/USR/BIN/PASSWD0000000 177 E L F 001 001 001.0000020 002/003/001/260 40000040 020
occupies size bytes;X[size]: Use 16 carry (hexadecimal) to output data, each integer occupies size bytes;Example one: Please use the/USR/BIN/PASSWD content in ASCII way to show!# od-t C/USR/BIN/PASSWD0000000 177 E L F 001 001 001.0000020 002/003/001/260 40000040 020 E, 4, \a,0000060 035/034/006/4/+ 4200 004 \b0000100 4 004 \b 340 (340) 005..... (omitted later) ....The leftmost first column represents the n
Before this, I used Ubuntu is the system comes with the default driver, but the resolution is not a problem, so has not installed Nvidia official driver;Recently updated to 15.04, while playing the AVI format of the regular video, there is a flicker phenomenon, and is always flashing;So consider whether the video card driver needs to be updated, initially found a lot of updates Nvidia driver method, wrote a lot of commands, the results can not be installed. Always prompt nouveau is in use, forbi
=c:dump.txt 340Note that 340 is my native Java process pid,dump out of the file is a lot more than 10 m, and I just opened Tomcat, ran a very simple application, and no access, can imagine, large busy server, dump out of the file how large. What you need to know is that the dump file information is very primitive, it's not for people to watch directly, and the Jmap-histo display is too simple, such as showing just how much memory a certain type of obj
problem
01 knapsack problem before using dynamic programming method to achieve: Dynamic programming 01 knapsack problem (easy to understand) 01 knapsack problem general Use the subset tree frame of backtracking method to realize
#include
Input:3 105 5 340 30 10
Output:701 1 0Process Analysis:If you use an array to represent each recursive, the choice of each item, then: (0 for the election, 1 for the election)(0,0,0) All BESTP = 0(0,0,1) Select 3rd
' THEN ' North America '
When ' Mexican ' THEN ' North America '
Else ' other ' end
From Table_a
GROUP by Case Country
When ' China ' THEN ' Asia '
When ' India ' THEN ' Asia '
When ' Japan ' THEN ' Asia '
When ' America ' THEN ' North America '
When ' Canada ' THEN ' North America '
When ' Mexican ' THEN ' North America '
Else ' other ' end;
Similarly, we can use this method to determine the level of wages, and statistics of the number of each level. The SQL c
only be set to Disbale
6, megacli-adpsetprop-enablejbod-1-a0 set JBOD mode, for RAID0 effective, a single disk read and write, that is, first write the first disk, written full in writing the second disk. MEGACLI-PDMAKEJBOD-PHYSDRV[E0:S0,E1:S1]-A0 can set JBOD mode (not currently supported)
7, Megacli-adpsetprop ExposeEnclDevicesEnbl-1-a0, let equipment drive exposure enclosure devices
14, NCQ
8, display NCQ settings megacli-adpgetprop-ncqdsply-a0
9, set open NCQ megacli-adpsetprop-ncqenbl
;join_game ();$child 3=new Child ("King II");$child 3->join_game ();See how many people play gamesecho "?>
PHP static method
Static methods are also called class methods, and static methods belong to all object instances in the form of the following:
Access modifier static method name () {
Statement
}
When we manipulate static variables, we can consider using static methods
Note: Non-static properties (variables) cannot be accessed in class methods, and normal methods can access either
America ' when '
Canada ' then ' North America ' when
' Mexico ' then ' North America '
Else ' other ' END
from Similarly, we can use this method to judge the salary level, and to count the number of each level. The SQL code is as follows; SELECT case when
salary Two, a SQL statement is used to complete the grouping of different conditions. Have the following data
Country (country)
Gender (Sex)
Population (population)
China
1
America ' then Span style= "color: #800080;" > ' North America ' then Span style= "color: #800080;" > ' North America ' else ' other ' end; Similarly, we can use this method to judge the salary level, and to count the number of each level. The SQL code is as follows; SELECTCaseWhen salary Then' 1 'When salary > 500and salary Then' 2 'When salary > 600and Salary Then' 3 'When salary > 800and Salary Then' 4 'ELSENullEND Salary_class, COUNT (*)From Table_agroup by case when salary then ' 1 '
' China ' Then ' Asia ' when ' India ' then ' Asia ' when ' Japan ' Then ' Asia ' When ' us ' then ' North America ' when ' Canada ' Then ' North America ' when ' Mexico ' then ' North America ' Else ' other ' endfrom Table_agroup by case country when ' China ' then ' Asia ' when ' India ' then ' Asia ' when ' Japan ' then ' Asia ' C22
data
Country (country)
Gender (Sex)
Population (population)
China
1
340
China
2
260
United States
1
45
United States
2
55
Canada
1
51
Canada
2
49
United Kingdom
1
40
United Kingdom
2
60
Grouped according to country an
America ' when '
Canada ' then ' North America ' when
' Mexico ' then ' North America '
Else ' other ' END
from Similarly, we can use this method to judge the salary level, and to count the number of each level. The SQL code is as follows; SELECT case when
salary Two, a SQL statement is used to complete the grouping of different conditions. Have the following data
Country (country)
Gender (Sex)
Population (population)
China
1
' North America'WHEN 'Mexico 'then' North America'ELSE 'others' END;
Similarly, we can use this method to determine the wage level and count the number of people at each level. The SQL code is as follows:
The Code is as follows:
SELECTCase when salary WHEN salary> 500 AND salary WHEN salary> 600 AND salary WHEN salary> 800 AND salary Else null end salary_class,COUNT (*)FROM Table_AGROUPCase when salary WHEN salary> 500 AND salary WHEN salary> 600 AND salary WH
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