java计算代码执行时间

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2022-03-11


public class Demo {
public static void main(String[] args) throws InterruptedException {
long start = System.currentTimeMillis();
long sum = 0;
for (int i = 0; i <= 100000; i++) {
sum += i;
}
System.out.println("sum = " + sum);
long end = System.currentTimeMillis();
System.out.println(end - start + "ms");
}
}



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