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问题 I'm trying to write a Java program to calculate the maximum, minimum, mean and standard deviation after reading a text file full of floating point numbers. As you can see, I've calculated the max, min, mean, but for the standard deviation, I'm confused. Any ideas how I should implement this? Also, I'm fairly new to programming, so sorry if things aren't structured correctly. Here's my code: /* * Create a Java program to read a file of floating point numbers and compute * the following

问题 I'm trying to write a Java program to calculate the maximum, minimum, mean and standard deviation after reading a text file full of floating point numbers. As you can see, I've calculated the max, min, mean, but for the standard deviation, I'm confused. Any ideas how I should implement this? Also, I'm fairly new to programming, so sorry if things aren't structured correctly. Here's my code: /* * Create a Java program to read a file of floating point numbers and compute * the following

问题 I am using Sebastien Lorion Reference CSV reader to process my CSV file in C# 3.0. Say example id|name|dob (Header) 1|sss|19700101 (data) 2|xx|19700201 (data) My Business Object is class Employee { public string ID {get;set;} public string Name {get;set;} public string Dob {get;set;} } I read the CSV stream and stored it in List<string[]> List<string[]> col = new List<string[]>(); using (CsvReader csv = new CsvReader (new StreamReader("D:\\sample.txt"), true, '|')) { col = csv.ToList(); } How

问题 I have the following command which recursively renames all the files/directory's to lowercase and replaces spaces with _. find . -iname "*" | rename 'y/A-Z/a-z/; s/ /_/g;' How do I extend it to remove all periods from directories and leave just the last period for files? So input would be: this.is.a.directory this.is.a.file.txt Output this_is_a_directory this_is_a_file.txt 回答1: You can do this using find in a while loop and using a regex to leave last DOT for files: while IFS= read -rd ''

问题 Is this any possible way to set or change windows file and folder attribute with php? I'm creating desktop.ini file in some folders with php. But I need to make it HSA - Hidden, System file, Archive - In addition I need to make folder read-only which is a R flag. Is there anyway to do that with PHP ? please help me! 回答1: Finally I find the answer, exec("attrib +r <any directory>"); exec("attrib +h +s +a desktop.ini"); 来源： https://stackoverflow.com/questions/49629856/how-to-manipulate-windows

问题 The program output Should be: The numbers are: 101 102 103 104 105 106 107 108 108 110 But my output is: The numbers are: 0 0 0 0 0 0 0 0 1606416272 32767 This is my code: // This program reads data from a file into an array. #include <iostream> #include <fstream> // To use ifstream using namespace std; int main() { const int ARRAY_SIZE = 10; // Array size int numbers[ARRAY_SIZE]; // Array number with 10 elements int count = 0; // Loop counter variable ifstream inputFile; // Input file stream

问题 The program output Should be: The numbers are: 101 102 103 104 105 106 107 108 108 110 But my output is: The numbers are: 0 0 0 0 0 0 0 0 1606416272 32767 This is my code: // This program reads data from a file into an array. #include <iostream> #include <fstream> // To use ifstream using namespace std; int main() { const int ARRAY_SIZE = 10; // Array size int numbers[ARRAY_SIZE]; // Array number with 10 elements int count = 0; // Loop counter variable ifstream inputFile; // Input file stream

问题 The program output Should be: The numbers are: 101 102 103 104 105 106 107 108 108 110 But my output is: The numbers are: 0 0 0 0 0 0 0 0 1606416272 32767 This is my code: // This program reads data from a file into an array. #include <iostream> #include <fstream> // To use ifstream using namespace std; int main() { const int ARRAY_SIZE = 10; // Array size int numbers[ARRAY_SIZE]; // Array number with 10 elements int count = 0; // Loop counter variable ifstream inputFile; // Input file stream

问题 I'm working on hybrid mobile app using html5/js. It has a function download zip file then unzip them. The download function is not problem but I don't know how to unzip file (using javascript). Many people refer to zip.js but it seems only reading zip file (not unzip/extract to new folder) Very appreciate if someone could help me !!! 回答1: Have a look at zip.js documentation and demo page. Also notice the use of JavaScript filesystem API to read/write files and create temporary files. If the

问题 I need to read in lines from a given text file into a vector of a class of strings. I have this so far but I cannot get them into the vector. I am trying to create a while loop to read in each line of the text file input by the user. I've modified it from the last time, but all it does is read in one thing at a time, splitting Las and Vegas. I also need to push the information from my text file into my Flight vector. #include "sort.h" #include "flight.h" #include "std_lib_facilities_4.h"