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実行時間計測 (雑) (キョープロ関係で使う) (Windows上で使う)
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| // 実行時間計測 | |
| // license: public domain | |
| // author: Leonardone @ NEETSDKASU | |
| // | |
| // usage: | |
| // java Time command args.. | |
| // | |
| // e.g. | |
| // java Time java -cp Problem1 Solver < .\Problem1\TestCase1.txt > .\Problem1\Answer1.txt | |
| // | |
| public class Time | |
| { | |
| public static void main(String[] args) throws Exception | |
| { | |
| if (args.length == 0) | |
| { | |
| System.err.println("no command"); | |
| System.exit(1); | |
| return; | |
| } | |
| ProcessBuilder pb = new ProcessBuilder(args); | |
| pb.inheritIO(); | |
| long time1, time2; | |
| time1 = System.currentTimeMillis(); | |
| Process proc = pb.start(); | |
| proc.waitFor(); | |
| if (proc.exitValue() != 0) | |
| { | |
| System.exit(proc.exitValue()); | |
| return; | |
| } | |
| time2 = System.currentTimeMillis(); | |
| System.err.println("----------"); | |
| System.err.println("time1: " + Long.toString(time1)); | |
| System.err.println("time2: " + Long.toString(time2)); | |
| System.err.println("diff:" + Long.toString(time2 - time1)); | |
| } | |
| } |
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Linuxにはちゃんと実行時間計測用のコマンドがあるらしい