counting

问题 I would like to count how many times my signal goes to zero. For example having an impulse signal as input I want a variable which counts how many times the impulse goes to zero. I´m becoming crazy thinking of something....can anybody help me? Thanks 回答1: figure 1 is a pulse counter model and figure 2 is scope output which shows for 5 input pulses we get counter output as 5 回答2: There is a similar question here that might help. There are loads of ways to implement a counter, but a good way I

问题 Is it possible to get the number of cases in a switch case in C without manually adding a counter variable which is incremented in each case? 回答1: As I commented earlier, I think you want a dispatch table rather than a switch statement. Here's a little example. Say you got this: int find_the_case(); void do_something(); void do_something_different(); void do_something_completly_different(); void do_default(); int main(int argc, char *argv[]) { int c = find_the_case(); switch(c){ case 0: do

问题 Having a sequence of n <= 10^6 integers, all not exceeding m <= 3*10^6, I'd like to count how many coprime pairs are in it. Two numbers are coprime if their greatest common divisor is 1. It can be done trivially in O(n^2 log n), but this is obviously way to slow, as the limit suggests something closer to O(n log n). One thing than can be done quickly is factoring out all the numbers, and also throwing out multiple occurences of the same prime in each, but that doesn't lead to any significant

问题 I'm working with this peace of that count the logical lines in a program, omitting comments and black lines. The counting line is working, but I don't know how to omit the comment lines, I try if (line == "//") { comment++; } but it only checks for lines that start with "//" and if there's text next to that it doesn't count that as a comment line :/ At the end when I know the total lines and total comment lines, I will subtract totalLines-commentLines to know the real program number lines.

问题 I'm trying to figure out a way to count the number of characters in a string, truncate the string, then returns it. However, I need this function to NOT count HTML tags. The problem is that if it counts HTML tags, then if the truncate point is in the middle of a tag, then the page will appear broken. This is what I have so far... public string Truncate(string input, int characterLimit, string currID) { string output = input; // Check if the string is longer than the allowed amount //

问题 I need to count the vocals, consonants and all other characters in a specific text file. I created a script that counts the vocals and consonants, but I can't figure out how to count the rest of the characters. The goal is to count ALL characters, even if they're from another language, like Icelandic characters and signs like comma, full stop and exclamation mark. Here's my current code: Clear-Host $vocal = (Get-Content C:\Users\Administrator\Desktop\POWERSHELL\testfil.txt | Select-String

问题 I am trying a problem where we are given binary string of length N(<10^5), and we are allowed exactly X(<10^5) flips on it, we are asked how many different string is possible? I am not getting idea about this, i though that it might be solved using dp, but not able to come with a recursion. Plz Help? Example: consider the binary string of N = 3 , 1 1 1 , and X = 2 New Binary strings that can be formed after applying 2 flips are 1 1 1 (flipped the first/second/third bit twice) 0 0 1 (flipped

问题 I am trying a problem where we are given binary string of length N(<10^5), and we are allowed exactly X(<10^5) flips on it, we are asked how many different string is possible? I am not getting idea about this, i though that it might be solved using dp, but not able to come with a recursion. Plz Help? Example: consider the binary string of N = 3 , 1 1 1 , and X = 2 New Binary strings that can be formed after applying 2 flips are 1 1 1 (flipped the first/second/third bit twice) 0 0 1 (flipped

问题 I need to detect a spiral shaped spring and count its coil turns. I have tried as follows: Image<Bgr, Byte> ProcessImage(Image<Bgr, Byte> img) { Image<Bgr, Byte> imgClone = new Image<Bgr,byte>( img.Width, img.Height); imgClone = img.Clone(); Bgr bgrRed = new Bgr(System.Drawing.Color.Red); #region Algorithm 1 imgClone.PyrUp(); imgClone.PyrDown(); imgClone.PyrUp(); imgClone.PyrDown(); imgClone.PyrUp(); imgClone.PyrDown(); imgClone._EqualizeHist(); imgClone._Dilate(20); imgClone._EqualizeHist();

问题 I need to detect a spiral shaped spring and count its coil turns. I have tried as follows: Image<Bgr, Byte> ProcessImage(Image<Bgr, Byte> img) { Image<Bgr, Byte> imgClone = new Image<Bgr,byte>( img.Width, img.Height); imgClone = img.Clone(); Bgr bgrRed = new Bgr(System.Drawing.Color.Red); #region Algorithm 1 imgClone.PyrUp(); imgClone.PyrDown(); imgClone.PyrUp(); imgClone.PyrDown(); imgClone.PyrUp(); imgClone.PyrDown(); imgClone._EqualizeHist(); imgClone._Dilate(20); imgClone._EqualizeHist();