Simple configuration and application of Mybatis-plus and mybatis-plus
Mybatis-plus is an enhanced version of mybatis, which is written by the Chinese gods and can automatically generate code.The configuration process is simple. First introduce two maven Dependencies
One is mybatis-plus, and the other is the templ
The Apple phone comes out not by parameter but by performance fluency, to see the parameters of friends may be tragic.
Some say IPhone6 plus ram is 2GB, is this really true?
From the previous IPhone6 run point of view, 4.7-inch RAM is 1GB, and 5.5-inch version of the memory is consistent, we might as well look forward to the next IPad6 RAM.
OK, so the IPhone6 Plus 2GB data shown in the picture above is
Status: D (I,J) it represents the number of the former J Division number I and includes the first J best results. G (I,j) represents the first J Division number I best results when segment, G (M,N) results are required. Big Data. A scrolling array is required. Note: This type of int is sufficient, open long long may be tle.After using the scrolling array, G[j] represents the optimal result divided into the I segment, and the last g[n] is the result#include D[j]:max (G[j-1],d[j]); J number is div
, although it seems that there is no case of the J element being selected when the state transitions. As for this question, why not use the normal packet DP State transfer: 1). Select A[j] To join an existing paragraph, 3). Select A[j] To start a new paragraph, that is because each paragraph here must be continuous, and if so, but discontinuous, discontinuous is not the new Is the paragraph coming out again?Transfer: Dp[i][j]=max (Dp[i][j-1]+a[j],dp[i-1][k]+a[j]), I-12. Optimization:1). S
Dynamic programming, given an integer array of length n (≤1e6) and an integer m, selects m consecutive and 22 disjoint sub-ranges, which makes the interval and maximum maximum in all schemes.DP[I][J] Indicates the end position (the position of the last element in the last interval) is I and the maximum value of the interval number j is selected.It is easy to get the following state transition equations:andTaking into account the size of the array and the updated features of J, a one-dimensional
the first I number is divided into J, and includes the number of the largest m sub-segment and, then there is the DP equation:F (i, j) = max {f (i-1, J) + V[i], max {f (k, j-1) + V[i]} (k = j-1 ... i-1)}. You can introduce a secondary array to optimize the transfer. Set g (I, j) to indicate that the number of first I is divided into the maximum sub-segment of J and (note that the number of I may not be in the J-segment), then the recursive relationship is as follows: G (i, j) = Max{g (I-1, J),
doing, soThe final state transfer equation:dp[j]=max (Dp[j-1]+num[j],pre[j-1]+num[j])#include #includeusing namespacestd;Const intn=1000010;Const intinf=0x3f3f3f3f;intNum[n],pre[n],dp[n];intMain () {intn,m; while(SCANF ("%d%d", m,n)! =EOF) { for(intI=1; i"%d", num[i]), dp[i]=0, pre[i]=0; intMAX; dp[0]=pre[0]=0; for(intI=1; i) {MAX=-INF; for(intj=i;j//I start with I, because I need at least a number to support I segmentDp[j]=max (dp[j-1]+num[j],pre[j-1]+Num[j]); Pre[j-1]=MAX; MAX=Max
/*** First Use HmacSHA256 signature, then use BASE64 encoding, finally URL encoding*SIGNATUREREQSTR: Data to encrypt* Secretkey: Key*/public static string Getsignature (String signaturereqstr,string secretkey) { Mac Sha256_hmac; String result = ""; try { Sha256_hmac = Mac.getinstance ("HmacSHA256"); Secretkeyspec Secret_key = new Secretkeyspec (Secretkey.getbytes (), "HmacSHA256"); Sha256_hmac.init (Secret_key); result = Base64.encodebase64string (Sha256_hmac
RSA cryptographic Verification is a commonly used method for inter-agency communication with high security requirements, and the current computational power is not sufficient to decrypt it (but quantum computers ...), if the key is long enough. Who knows about the future. )。 However, I find that there are still people who are smattering the process. For example, what your sign-up algorithm uses. Answer RSA ... For example, some organizations will be generated key pair re-use BASE64 encoding, so
Minute
MI, n
Second
SS, S
Millisecond
Ms
specifically to my question, need to be on the basis of the original record minus 15 minutes, the condition is all this morning late attendance record, see the following sql:UpdateKaoqin SetSj=DateAdd(MI,- the, SJ) where(SJ>'2007-8-15 08:00:00'Subtract time only needs to set number to the corresponding negative value on the line. SQL Date Time format conversion large complete, SQL
"066-plus one (plus a)""leetcode-Interview algorithm classic-java Implementation" "All topics Directory Index"Original QuestionGiven a non-negative number represented as an array of digits, plus one to the number.The digits is stored such, the most significant digit was at the head of the list.Main TopicGiven a number represented by an array, add an action to it.
Problem Solving Ideas:We need to add one to this number, that is, at the end of the number plus one, if it is 9, there is a rounding problem, if the previous number of digits is 9, you need to continue to carry forwardSpecific algorithm:1. Determine if the last digit is less than 9, if it is, then add a return, if it is 9, then the position is assigned a value of 0, and then continue to find the previous position, until the first position, if the firs
The plus sign in front of the js function, exclamation point, and plus sign in front of the js Function
+ Function (){}();
The plus sign can also be replaced !,~ And other unary operators, the effect is equivalent:
(Function () {console. log ("Foo! ") ;}) (); // Or (function () {console. log (" Foo! ");}());
Without this
DP is a common problem in the competition, but also my weakness orz, more to practice. See Ganga's DP topic exercise the first is Max sum plus Plus, so I took the hdu1003 max sum I've done before and did it again.HDU 1003 Max SumTitle Link: http://acm.hdu.edu.cn/showproblem.php?pid=1003Title Description: A sequence of integers, in which a continuous sub-sequence is obtained, and the maximum value and the st
1, we click on the Glory 6 Plus click "Settings" to find the "Backup" option clicked into, as shown in the following figure:
2, after entering the backup interface, we click on the "New backup" option, the entry effect is as follows, as shown in the following figure:
3, access to the data backup interface we can have a selective backup, you can back up--address book, multimedia data, applications and data and system data, as shown in the
Program analysis: Within 100,000 to judge, the number plus 100 after the root, and then the number plus 268 after the root, if the result of the root to meet the conditions, that is the result#include #include int main (){long int i,x,y;for (i=1;i{X=SQRT (i+100);Y=SQRT (i+268);if (x*x==i+100y*y==i+268)printf ("%ld ", i);}return 0;}An integer, plus 100 is a comple
IPhone6 Plus cannot connect to the App Store
1. Restore Network Settings
Also in the mobile phone, click the "Settings" –> "General" –> "restore" –> "Restore network Settings" and then enter and then restart the phone can be.
2. Reset Access Restrictions
Enter IiPhone6 Plus "set" –> "Universal" –> "Access Restrictions", turn on access restrictions for 5 seconds, and then turn off access restrictions.
3
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