mirror of
https://github.com/zekexiao/pocketlang.git
synced 2025-02-06 12:46:53 +08:00
20 lines
410 B
JavaScript
20 lines
410 B
JavaScript
function reverse(list) {
|
|
var i=0, tmp, idx, count=list.length;
|
|
for (; i < count; i++) {
|
|
idx = count - i - 1;
|
|
tmp = list[idx];
|
|
list[idx] = list[i];
|
|
list[i] = tmp;
|
|
}
|
|
}
|
|
|
|
var start = process.hrtime();
|
|
|
|
var i=0, N=20000000, list=Array(N);
|
|
for (; i < N; i++) list[i] = i;
|
|
reverse(list);
|
|
|
|
var end = process.hrtime(start);
|
|
var secs = (end[0] + end[1] / 1e9).toFixed(6) + 's';
|
|
console.log('elapsed:', secs);
|