javascript快速排序算法代码
function qsort(a) {
if (a.length == 0) return [];
var left = [];
var right = [];
var pivot = a[0];
for (var i = a.length; --i;) {
if (a[i] < pivot)
left.push(a[i]);
else
right.push(a[i]);
}
return qsort(left).concat(pivot, qsort(right));
}
