180c8aa234bc

main函数中不要同时执行2个函数，不然交换顺序会得到相反的结论。

java数组转换成list性能比较

今天遇到要用到将数组转换成list，看了一下Arrays里面有一个方法asList可以将数组转换成list。但是我们亦可以用for循环把数组转换成list。经过试验发现两种方...

cccchaos

1861 5 3

180c8aa234bc

在jdk1.8下用server模式执行，发现有差距，但没这么大。数据如下：
for each =============158=====useTime:2476353
for each =============158=====useTime:1195255
for each =============158=====useTime:852821
for each =============158=====useTime:655477
for each =============158=====useTime:722658
for each =============158=====useTime:797770
for each =============158=====useTime:1117811
for each =============158=====useTime:811766
for each =============158=====useTime:941929
for each =============158=====useTime:949393

arrays.asList=========158=====useTime:1172395
arrays.asList=========158=====useTime:863085
arrays.asList=========158=====useTime:1262903
arrays.asList=========158=====useTime:946127
arrays.asList=========158=====useTime:892943
arrays.asList=========158=====useTime:1483572
arrays.asList=========158=====useTime:1264769
arrays.asList=========158=====useTime:1005377
arrays.asList=========158=====useTime:903207
arrays.asList=========158=====useTime:884545

java数组转换成list性能比较

今天遇到要用到将数组转换成list，看了一下Arrays里面有一个方法asList可以将数组转换成list。但是我们亦可以用for循环把数组转换成list。经过试验发现两种方...

cccchaos

1861 5 3