Problem:There is a file: (Tab Delimited)1 12123 A G bb234t Keep rejj1 22123 T B cb34n Keep rejj2 12243 A C cb4423t keeeep rejjj2 22343 G C hb4t Kep RJJ3 1113 C G bb2334t Kp RjTo delete the last character of the 5th column:1 12123 A G BB234 Keep rejj1 22123 T B CB34 Keep rejj2 12243 A C CB4423 keeeep rejjj2 22343 G C HB4 Kep RJJ3 1113 C G BB2334 Kp RjAnswer:awk ' begin{ofs= ' \ t '}{sub (/.$/, "", $ $)}1 ' f
The code comes from the Linux kernel Sample/kprobeKprobe_example.c/** Note:this example is works on x86 and PowerPC.* Here's a sample kernel module showing the use of kprobes to dump a* Stack trace and selected registers when Do_fork () is called.** For more information on theory of operation of Kprobes, see* Documentation/kprobes.txt** You'll see the trace data in/var/log/messages and on the console* Whenever Do_fork () is invoked to create a new process.*/#include #include #include /* For each
Any positive integer N can be counted as the product of prime numbers.
N = P1P2... pm = primary PK (1 ≤ k ≤ m, P1 ≤... ≤ pm)
In addition, the expanded sequence is unique.
Assume that a number M can be expressed by the prime number sequence
K = Mn forward → Kp = MP + NP, for all P
M/N then → MP ≤ NP, for all P
Then we can see that
K = gcd (m, n) Forward → Kp = min (MP, NP), for all P
K = lcm (m, n)
the grid.
For ($ I = 1; $ I {$ Y = $ I * 25-10;// Calculate the appropriate height (ordinate) of the scale based on the position of the grid lines ).$ Str = Number_Format ($ zzg-($ i-1)/6 * $ bl, 2 ,".",",");// Calculate the price of each dial and format the string.$ X = 55-ImageFontWidth (2) * StrLen ($ str );// Calculate the appropriate abscissa Based on the width of the string to be occupied.ImageString ($ im, 2, $ x, $ y, $ str, $ data );// Write this string.}
$ Str = Number_Format ($ lzg,
algorithm is O (n);(3) Discuss the maximum number of moves recorded in the algorithm.(1) ~ (2) The algorithm satisfies the condition as follows:(3) When a record with a positive keyword is all ranked before a record with a negative keyword, the maximum number of moves is required: N/2.10.32. Question of the flag of the Netherlands: there is a series of bars consisting only of three colors, red, white, and blue. Write an algorithm with a time complexity of O (n) so that the bars are lined up in
/**************************** the so-called PID is P (proportional) +i (integral) +d (differential **************************/* * (1) P Control (proportional control): E (t) = sp-y (t); sp--Set value E (t)--error value (set value and current error) y (t)--Feedback value (current value) * * for small hysteresis system U (t) = e (t) * P; U (t)--output value (required output) p--scale factor * * * (2) Pi control (proportional + integral): U (t) = kp
Balanced trolley and inverted pendulum are used position-type PID controller/************************************************************************** function function: Position-type PID controller 1. Entry parameters: Encoder measurement position information, target position 2. Inlet parameters: Encoder measurement speed, target speed return value: Motor PWM based on position discrete PID Formula Pwm=kp*e (k) +ki*∑e (k) +kd[e (k)-E (k-1)] e (k) rep
(hand)The remaining 12 bytes are not used
I wrote a small C-language program for everyone and hoped it would be useful.
Steps:Defines the data structure of a stock price gpjg
Use fread function to read filesUse the fprintf function to write files
The final result of the program execution is to convert the binary file into a comma separated character file, which is suffixed with .csv and can be opened in excel or processed subsequently.
The procedure is as follows:
# Include # Include
Struct gp
DC Motor Speed Regulation?for a given model, just modify the Controller part of the simulation purposes can be achieved, the previous code only proportional link, no integral and differential links, so need to increase these two links, here set kp=8 , Ki=1 , kd=60 , the resulting simulation waveform isIt can be seen that the acceleration and deceleration time is very short, rapid reaction, the overshoot is not small, the speed curve has a very low dev
Title DescriptionDescriptionLongge is very good at maths and he is very happy to challenge difficult math problems. Here's the problem:To set an integer N, you need to ask for ΣGCD (i, N) (1Enter a descriptionInput DescriptionThe first line contains an integer N, as shown in titleOutput descriptionOutput DescriptionThe first line contains an integer that is the answer to the request.Sample inputSample Input6Sample outputSample Output15Data range and TipsData Size HintFor 60% of data, 0For 100%
Linux Kernel module notes, Linux kernel module
Topic: 1. basic embedded knowledge 2. linux Kernel Introduction 3. kernel compilation and installation (x86) 4. first Module 5. module related tools 6. module symbol export 7. module parameter job: 1. check linux/module. h. The location of the header file that is exposed to the course every day: /home/zshh/work/driver/kernel/linux-3.5/include/linux focuses on the module struct (module counts are in the module struct) and module this struct contains
weditres to create resourcesIn the development of Windows programs, resources are very important.The user interface can be compiled like a program, and can be easily included as a resource into the program.If the Lcc-Win32 does not provide a resource editor, the Lcc-Win32 will not be a complete Win32 CompilerThe Lcc-Win32 provides the resource editor called weditres, which is in the "KP/bin/" path.Indeed, weditres is still in the process of continuou
Kprobes probe pointsvoid Unregister_kprobe (struct kprobe *p);Instance/** Note:this example is works on x86 and PowerPC.* Here's a sample kernel module showing the use of kprobes to dump a* Stack trace and selected registers when Do_fork () is called.* For more information on theory of operation of Kprobes, see* Documentation/kprobes.txt* You'll see the trace data in/var/log/messages and on the console* Whenever Do_fork () is invoked to create a new process.*/#include #include #include /* For e
__iomem *internal_addr;};If you have a uio_mem struct, use its kobj members to find the embedded koject. Code that uses kobjects often encounters a problem: Given a kobject pointer, how can I find a pointer to the structure that contains the Kobject? You must avoid some "tricks", such as assuming that Kobject is the first member of a struct (the pointer to the first member of the struct is the pointer to the struct), instead, you should use the CONTAINER_OF macro ():CONTAINER_OF (pointer, type,
, and the reinforcement of differential is disadvantageous to the system anti-jamming. Neither integral nor differential can function independently and must be mated to proportional control.Take the temperature control system as an example:Proportional adjustment, has not been heated to the predetermined temperature, continue to increase the duty ratio, the larger the error ratio increases the greater the more. Differential regulation, when the actual temperature is getting closer to the target
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