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A simple MySQL partition instance is used to solve the problem of large data tables.

(UID)(Partition P0 values less than (10000) data directory = "/data00/" index directory = "/data00 /",Partition P1 values less than (20000) data directory = "/data00/" index directory = "/data00 /",Partition P2 values less than (30000) data directory = "/data00/" index directory = "/data00 /",Partition P3 values less than maxvalue data directory = "/data00/" index directory = "/data00 /");The partition type of this table is range, which is divided in

POJ 1039 Pipe Enumeration segment intersection

located, if it cannot be crossed, it must intersect the pipe wall, calculate the intersection, and if it can intersect, it can pass through the whole pipe. Note: The special trouble with enumeration at the beginning of enumeration is that it is directly enumerating the direction of the light, adding an enumeration of 0.01 from the entrance, especially when judging a particular position./************************************************************************* > File Name:poj_1039.cpp > Author:h

Top-level const and underlying const in C + +

const and the underlying const, there is a distinct difference in running the object copy:(1) Top-level const is unaffected[CPP]View Plaincopyprint? inti = 0; Const int ci = 42; //cannot change the value of CI, which is a top-level const i = CI; //Correct: CI is a top-level const that has no effect on this operation Const int *P2 = ci; //Agree to change the value of P2, which is an underlying const Const int *const p3 = p2;

C + + top-level const

, which differs significantly from the other types.2. The difference between the top-level const and the underlying const when running copy operationsFor the top-level const and the underlying const, there is a distinct difference in running the object copy:(1) Top-level const is unaffectedint i = 0;const int ci =; Can not change the value of CI, this is a top level consti = CI; Correct: CI is a top-level const, no effect on this operation const int *P2 = ci; Agree to change the value of P2

C language Two-level pointers and sample code _c language

Pointers can point to an ordinary type of data, such as int, double, char, or to a pointer type of data, such as int *, double *, char *, and so on. If a pointer is pointing to another pointer, we call it a level two pointer, or a pointer to a pointer. Suppose a variable a,p1 of type int is a pointer variable to a, P2 is a pointer variable that points to a P1, and their relationship is shown in the following illustration: Convert this relationship to C language code: int a =100; int

MySQL database partition Function and example detailed explanation

; PARTITION p1 VALUES less THAN (6),-> PARTITION p2 VALUES less THAN (9),-> PARTITION P3 VALUES less THAN (12),-> PARTITION P4 VALUES less THAN MAXVALUE->);Query OK, 0 rows affected (0.13 sec)Insert some datamysql> INSERT into ' test '. ' User ' (' name ', ' Sex ') VALUES (' Tank ', ' 0 ')->, (' Zhang ', 1), (' Ying ', 1), (' Zhang ', 1), (' Ying ', 0), (' Test1 ', 1), (' Tank2 ', 1)->, (' Tank1 ', 1), (' Test2 ', 1), (' Test3 ', 1), (' Test4 ', 1), (

hdu1115 (Polygon center of the gravity algorithm)

standard. into a n-2 triangle. And then the center of gravity.The other is to divide the n+1 triangle into the original point, then the center of gravity.AC Code:The first type of code:#include #include #include using namespace Std;struct point{Double x, y;};Double area (point p1,point p2,point p3) {//cross-multiply to find triangular areasReturn ((p2.x-p1.x) * (P3.Y-P1.Y)-(

A report on the expansion of the 1098 string in Luo gu

mother and child string, filled with lowercase letters, p1=2, for the character string, filled with uppercase letters. In both cases, the number substring is populated in the same way. P1=3, whether it is a substring or a digital string, are populated with the same number of letters to fill the asterisk "*" to fill.(3) parameter P2: The number of repetitions of the fill character. P2=k indicates that the same character is to be continuously populated with K. For example, when p2=3, the substrin

Code that can parse nested IIF statements

P2 = Str. indexof (",", P1 ); L = 0 ; // Recorded ( Int P3 = P2 + 1 ; For (; P3 Str. length; p3 ++ ) { If (L = 0 Str. substring (P3, 1 ) = " , " ) Break ; If (Str. substring (P3, 1 ) = " ( " ) L ++ ; // Each time one (,

Impact of new HASH partitions on index status

(*)----------3 SQL> ALTER TABLE T_PART SPLIT PARTITION PMAX AT (20)2 INTO (PARTITION P2, PARTITION P3 ); Table altered. SQL> SELECT INDEX_NAME, PARTITION_NAME, STATUS2 FROM USER_IND_PARTITIONS3 WHERE INDEX_NAME = 'ind _ T_PART_ID '; INDEX_NAME PARTITION_NAME STATUS--------------------------------------------------------------------IND_T_PART_ID P2 USABLEIND_T_PART_ID P3 USABLEIND_T_PART_ID P1 USABLE As you

Android Reverse-android base reverse (2-2)

the code that implements this module. But feel good to write the tedious, wait for a moment appropriate modification.January 27, 2018 11:57:35, busy other things.def fenxi (filename): try:f=open (filename, ' RB ') print ' Start--------' i=0 p1= ' "p2=" "P3=" "p4=" "p=" "while True:t=f.read (1) t1=t.encode (' Hex ') If I==0:p1=t1 if I==1:p2=t1 if i==2:p3=t1 If I==3:p4=t1

Polynomial and (linear table array Preservation)

Polynomial and, for example polynomial F1 (x) =12x^19+13x^8+4x^5-x^3+1,f (x) =21x^21+12x^19+10x^8+4x^6-x^2+3F1 (x) can be expressed as (12,19) (13,8) (4,5) ( -1,3) (1,0)F2 (x) can be expressed as (21,21) (12,19) (10,8) (4,6) ( -1,2) (3,0)F1 (x) +f2 (x) may be expressed as (21,21) (24,19) (23,8 ) (4,6) (4,5) ( -1,3) ( -1,2) (4,0)You can use arrays to store coefficients and exponential p3=p1+p2#include using namespace Std;Class Ploynode{Publicint coef[1

Leetcode (82)-delete duplicate elements in a sorted list II

no duplicate nodes, meaning to return null, Here is the final note (3) Treatment of the end of the list, if the remaining one is not duplicated, to join the list, because the program's double pointer traversal, the condition is not judgedlistnode* Deleteduplicates (listnode*head) { if(Head==null | | head->next==null)returnHead; ListNode* p1,*p2,*P3; P3=NULL; P1=Head; P2=p1->Next; intnum=1, flag=0;

hdu1115 (Polygon centroid algorithm)

standard, divided into n-2 triangle, and then to seek the center of gravity.The other is based on the origin of the n+1 into a triangle, and then to seek the center of gravity.AC Code:The first type of code:#include #include #include using namespace Std;struct point{Double x, y;};Double area (point p1,point p2,point p3) {//cross-multiply to find triangular areasReturn ((p2.x-p1.x) * (P3.Y-P1.Y)-(

[C ++] Implementing the delegate Model

delegate # define delegate1 (rettype, name, P1) \ declare_delegate (\ rettype, \ Name, \ declare_params (P1 a), \ declare_args ()) // delegate the two parameters # define delegate2 (rettype, name, P1, P2) \ declare_delegate (\ rettype, \ Name, \ declare_params (p1 A, P2 B), \ declare_args (a, B) // delegate the three parameters # define delegate3 (rettype, name, P1, P2, P3) \ declare_delegate (\ rettype, \ Name, \ declare_params (P1 a, P2 B,

02-Linear Structure 2 reversing Linked List

; AL2 = (linklist)malloc(sizeof(Node));//To create a head pointer theL2->next =NULL; + intCount =0; - intFindaddress =firstaddress; $P2 =L2; $ while(Findaddress! =-1) {//While (Count - -Q1 =L1; the while(q1->next) { - if(Q1->next->address = =findaddress) {WuyiP2->next = q1->Next; theQ1->next = q1->next->Next; -P2 = p2->Next; Wucount++; - //printf ("Count =%d\n", count); AboutFindaddress = p2->nextaddress; $ //printf ("findaddress =%d\n", findaddress); -}

NOIP2007 the expansion of a string

NOIP2007 's second topic, the personal feeling is violence to run simulation just fine, the data range is allowing us to run the programTitle Summary: The topic will give you three keywords P1,P2,P3, for different keywords will be on your program request, next will give you a string, which contains a-z,a-z,0-9, and minus-, we need to do is to press P1,P2,P3 request for "-" The specific requirements for P1,P

Reg51.h and Reg52.h Analysis of the head file in MCU with C programming

when we use them. )/*--------------------------------------------------------------------------REG51. HHeader file for generic 80C51 and 80C31 microcontroller.Copyright (c) 1988-2002 Keil Elektronik GmbH and Keil Software, Inc.All rights reserved.--------------------------------------------------------------------------*/#ifndef __reg51_h__#define __reg51_h__/* BYTE Register */SFR P0 = 0x80;SFR P1 = 0x90;SFR P2 = 0xA0;SFR P3 = 0xb0;SFR PSW = 0xD0;SFR

Flash as flashing menu code

Duplicatemovieclip ("line", "NewLine1", 1);newline1._x = p1._x+p1.kp._x;newline1._y = p1._y+p1.kp._y;Newline1._xscale = (p2._x+p2.kp._x)-(p1._x+p1.kp._x);Newline1._yscale = (p2._y+p2.kp._y)-(p1._y+p1.kp._y);Duplicatemovieclip ("line", "NewLine2", 2);newline2._x = p2._x+p2.kp._x;newline2._y = p2._y+p2.kp._y;Newline2._xscale = (p3._x+p3.kp._x)-(p2._x+p2.kp._x);Newline2._yscale = (

Single-linked list insertion sort

1 /**2 * Definition for singly-linked list.3 * struct ListNode {4 * int val;5 * ListNode *next;6 * ListNode (int x): Val (x), Next (NULL) {}7 * };8 */9 classSolution {Ten Public: OneListNode *insertionsortlist (ListNode *head) { AListNode *list =head; - - if(List = = NULL | | list->next = =NULL) the { - returnlist; - } - +ListNode *P1 =list; -ListNode *P2 = p1->Next; +ListNode *P3 = p2->Next; A at if(P1->val > p2->val) -

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