\u0417\u0430\u0434\u0443\u043c\u0430\u0432\u0448\u0438\u0441\u044c \u043e\u0434\u043d\u0430\u0436\u0434\u044b \u043d\u0430\u0434 \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u0438\u0435\u043c \u043a\u043e\u0435-\u043a\u0430\u043a\u043e\u0433\u043e \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0443 \u043c\u0435\u043d\u044f \u0432\u043e\u0437\u043d\u0438\u043a\u043b\u0430 \u043d\u0443\u0436\u0434\u0430 \u0441\u0447\u0438\u0442\u0430\u0442\u044c \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0441\u0442\u0440\u043e\u043a \u0432 \u0444\u0430\u0439\u043b\u0430\u0445. \u0421\u0447\u0438\u0442\u0430\u0442\u044c \u0431\u044b\u0441\u0442\u0440\u043e. \u0410 \u0444\u0430\u0439\u043b\u044b \u0431\u044b\u0432\u0430\u044e\u0442 \u0431\u043e\u043b\u044c\u0448\u0438\u043c\u0438 (500\u20131500 \u041c\u0431). \u0418, \u043f\u043e\u0441\u043a\u043e\u043b\u044c\u043a\u0443 \u0432 \u0442\u043e\u0442 \u043c\u043e\u043c\u0435\u043d\u0442 \u044f \u043d\u0430\u0445\u043e\u0434\u0438\u043b\u0441\u044f \u043d\u0430 \u0431\u043e\u043b\u044c\u043d\u0438\u0447\u043d\u043e\u043c, \u0432\u043e\u0437\u043d\u0438\u043a \u0441\u043f\u043e\u0440\u0442\u0438\u0432\u043d\u044b\u0439 \u0438\u043d\u0442\u0435\u0440\u0435\u0441 \u043f\u0440\u043e\u0432\u0435\u0440\u0438\u0442\u044c, \u043a\u0430\u043a\u043e\u0439 \u044f\u0437\u044b\u043a \u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0434\u0451\u0442 \u0441\u0438\u0435 \u0434\u0435\u0439\u0441\u0442\u0432\u043e \u0437\u0430 \u043c\u0438\u043d\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0435 \u0432\u0440\u0435\u043c\u044f.<\/p>\n
TL;DR; Go \u2014 \u043f\u043e\u0431\u0435\u0434\u0438\u043b. \u0418\u0442\u0430\u043a, \u0431\u044b\u043b\u0438 \u0432\u044b\u0431\u0440\u0430\u043d\u044b \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b\u0435 \u043c\u043d\u0435 \u044f\u0437\u044b\u043a\u0438:<\/p>\n <\/div>\n<\/div>\n<\/li>\n <\/div>\n<\/div>\n<\/li>\n <\/div>\n<\/div>\n<\/li>\n <\/div>\n<\/div>\n<\/li>\n <\/div>\n<\/div>\n<\/li>\n <\/div>\n<\/div>\n<\/li>\n<\/ul>\n \u0412\u0441\u0435 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u0438 \u0442\u0435\u0441\u0442\u044b (\u043a\u0440\u043e\u043c\u0435\u00a0.Net) \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u043b\u0438\u0441\u044c \u043d\u0430 MacBook Pro 13 Late 2012 \u0441 i5 2.5 GHz, SSD 256 Gb \u0438 8 Gb \u041e\u0417\u0423, macOS 10.12.1.<\/p>\n \u0424\u0430\u0439\u043b \u0434\u043b\u044f \u0442\u0435\u0441\u0442\u043e\u0432 \u0431\u044b\u043b \u043d\u0430\u0439\u0434\u0435\u043d \u0432 \u0432\u0438\u0434\u0435\u00a0.csv \u0440\u0430\u0437\u043c\u0435\u0440\u043e\u043c 491,4 \u041c\u0431 \u0438 489286 \u0441\u0442\u0440\u043e\u043a.<\/p>\n \u0414\u043b\u044f \u0442\u0435\u0441\u0442\u043e\u0432 \u0431\u044b\u043b\u0438 \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u044b \u043f\u0440\u043e\u0441\u0442\u0435\u0439\u0448\u0438\u0435 \u043a\u043e\u043d\u0441\u043e\u043b\u044c\u043d\u044b\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0441\u043e\u0441\u0442\u043e\u044f\u0449\u0438\u0435 \u0438\u0437 2\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u0439: \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u043e, \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u0438, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0441\u0447\u0438\u0442\u0430\u0435\u0442 \u043a\u043e\u043b-\u0432\u043e \u0441\u0442\u0440\u043e\u043a.<\/p>\n <\/p>\n \u041e\u0433\u043e\u0432\u043e\u0440\u044e\u0441\u044c, \u0447\u0442\u043e \u044f \u043d\u0435 \u0434\u0435\u043b\u0430\u043b \u0431\u043e\u043b\u044c\u0448\u043e\u0433\u043e \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u0430 \u0438\u0442\u0435\u0440\u0430\u0446\u0438\u0439, \u043e\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0432\u0448\u0438\u0441\u044c \u043d\u0430 20. \u0412 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u0432\u0437\u044f\u043b \u0441\u0440\u0435\u0434\u043d\u0435\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435.<\/p>\n <\/p>\n \u0418\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0444\u0430\u0439\u043b\u044b \u043d\u0430 \u0432\u0441\u044f\u043a\u0438\u0439 \u0441\u043b\u0443\u0447\u0430\u0439 \u043f\u0440\u0438\u043b\u0435\u043f\u043b\u0435\u043d\u044b \u0432 Gist: \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u043a\u043e\u0434\u044b<\/a>.<\/p>\n \u0415\u0441\u043b\u0438 \u043a\u0442\u043e-\u0442\u043e \u0436\u0435\u043b\u0430\u0435\u0442 \u043f\u0440\u043e\u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0438 \u043f\u043e\u0434\u0435\u043b\u0438\u0442\u044c\u0441\u044f \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0430\u043c\u0438 \u2014\u00a0\u043c\u0438\u043b\u043e\u0441\u0442\u0438 \u043f\u0440\u043e\u0448\u0443, \u043c\u043d\u0435 \u043a\u0440\u0430\u0439\u043d\u0435 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e.<\/p>\n \u0418, \u043f\u043e\u0432\u0442\u043e\u0440\u044e\u0441\u044c, \u0438\u043d\u0442\u0435\u0440\u0435\u0441 \u0443 \u043c\u0435\u043d\u044f \u043a\u0440\u0430\u0439\u043d\u0435 \u0441\u043f\u043e\u0440\u0442\u0438\u0432\u043d\u044b\u0439, \u0441\u0442\u043e\u0438\u0442 \u0432\u043e\u0437\u0434\u0435\u0440\u0436\u0430\u0442\u044c\u0441\u044f \u043e\u0442 \u043a\u043e\u043c\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0435\u0432 \u00abJava \u2014 ***, \u0430 C \u2014 \u0440\u0443\u043b\u0438\u0442!\u00bb.<\/p>\n
<\/a> <\/p>\n\u0422\u0435\u0441\u0442\u043e\u0432\u044b\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b<\/h4>\n
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#include <stdio.h> #include <time.h> int main(int argc, const char * argv[]) { const char *path = "big.csv"; double startTime = clock(); int linesCount = 0; FILE *fp = fopen(path, "r"); int bufsize = 32*1024; char buff[bufsize]; while (fgets(buff, bufsize, fp) != NULL) { linesCount++; } fclose(fp); double endTime = clock(); double totalTime = (endTime - startTime) \/ CLOCKS_PER_SEC; printf("Time: %f s\\n", totalTime); printf("Lines: %d \\n", linesCount); return 0; } <\/code><\/pre>\nusing System; using System.IO; namespace lineStat { \tclass MainClass \t{ \t\tpublic static void Main(string[] args) \t\t{ \t\t\tvar filename = "big.csv"; \t\t\tvar startTime = DateTime.Now; \t\t\tvar linesCount = countLinesInFile(filename); \t\t\tvar spentTime = DateTime.Now - startTime; \t\t\tConsole.WriteLine("Lines count: {0} in {1}", linesCount, spentTime); \t\t} \t\tstatic int countLinesInFile(string filename) \t\t{ \t\t\tint linesCount = 0; \t\t\tusing (var reader = new StreamReader(filename)) \t\t\t{ \t\t\t\twhile (reader.ReadLine() != null) { \t\t\t\t\tlinesCount++; \t\t\t\t} \t\t\t} \t\t\treturn linesCount; \t\t} \t} }<\/code><\/pre>\npackage main import ( \t"bytes" \t"fmt" \t"io" \t"os" \t"time" ) func main() { \tstart_time := time.Now() \tfile, _ := os.Open("big.csv") \tcount, _ := lineCounter(file) \telapsed := time.Since(start_time) \tfmt.Printf("Lines count: %d in %s\\n", count, elapsed) } func lineCounter(r io.Reader) (int, error) { \tbuf := make([]byte, 32*1024) \tcount := 0 \tlineSep := []byte{'\\n'} \tfor { \t\tc, err := r.Read(buf) \t\tcount += bytes.Count(buf[:c], lineSep) \t\tswitch { \t\tcase err == io.EOF: \t\t\treturn count, nil \t\tcase err != nil: \t\t\treturn count, err \t\t} \t} }<\/code><\/pre>\npackage me.meamka; import java.io.BufferedReader; import java.io.FileReader; import java.io.IOException; import java.text.DecimalFormat; import java.text.NumberFormat; public class LinesCount { public static void main(String[] args) throws IOException { \t\/\/ write your code here String filename = "big.csv"; System.out.println("Count lines in " + filename); long startTime = System.nanoTime(); int linesCount = countLinesInFile(filename); long endTime = System.nanoTime(); NumberFormat formatter = new DecimalFormat("#0.00000"); System.out.println("Lines count: " + linesCount +" in " + formatter.format((endTime - startTime) \/ 1000000000d)); } private static int countLinesInFile(String filename) throws IOException { int linesCount = 0; try (BufferedReader br = new BufferedReader(new FileReader(filename))) { while (br.readLine() != null) { linesCount++; } } return linesCount; } }<\/code><\/pre>\n<\/div>\n<\/div>\n<\/li>\n<?php function countLinesInFile($filename) { \t$f = fopen( 'big.csv', 'r'); \t$lineCount = 0; \twhile (!feof($f)) \t{ \t\tif (fgets($f)) $lineCount++; \t} \tfclose($f); \treturn $lineCount; } function main() { \t$start = microtime(true); \t$linesCount = countLinesInFile($filename); \t$duration = number_format(microtime(true)-$start, 4); \t$memory = number_format(memory_get_peak_usage(true),0,'.',' '); \techo "Total lines: $linesCount; Duration: $duration seconds; Memory used: $memory bytes\\n"; } main(); ?><\/code><\/pre>\n# coding: utf-8 import time def linesCount(filename): count = 0 with open(filename, 'r') as reader: while reader.readline(): count += 1 return count if __name__ == '__main__': filename = 'big.csv' start_time = time.time() count = linesCount(filename) end_time = time.time() - start_time print("Lines count: %s in %s" % (count, end_time))<\/code><\/pre>\nimport Foundation import Darwin var path = "big.csv" let methodStart = NSDate() var linesCount = 0 let bufsize = 32*1024 var buf = UnsafeMutablePointer<Int8>.allocate(capacity: bufsize) let filePointer = fopen(path, "r") while fgets(buf, Int32(bufsize-1), filePointer) != nil { \/\/ print(String.fromCString(CString(buf))) linesCount += 1 } fclose(filePointer) let methodFinish = Date() let executionTime = methodFinish.timeIntervalSince(methodStart as Date) print("Execution time: \\(executionTime)") print("Lines Count: \\(linesCount)")<\/code><\/pre>\n\u0422\u0435\u0441\u0442\u043e\u0432\u0430\u044f \u0441\u0440\u0435\u0434\u0430<\/h4>\n
\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b<\/h4>\n
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\n C<\/th>\n \u2248 0.25 \u0441\u0435\u043a<\/th>\n<\/tr>\n \n C#<\/td>\n \u2248 2.8 \u0441\u0435\u043a<\/td>\n<\/tr>\n \n Go<\/td>\n \u2248 0.16 \u0441\u0435\u043a<\/td>\n<\/tr>\n \n Java<\/td>\n \u2248 2.7 \u0441\u0435\u043a<\/td>\n<\/tr>\n \n PHP<\/td>\n \u2248 0.25 \u0441\u0435\u043a<\/td>\n<\/tr>\n \n Python<\/td>\n \u2248 2.6 \u0441\u0435\u043a<\/td>\n<\/tr>\n \n Objective-C\/Swift<\/td>\n \u2248 0.25 \u0441\u0435\u043a<\/td>\n<\/tr>\n<\/table>\n \u0418\u0437 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e\u0433\u043e<\/h4>\n
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P. S.<\/h4>\n