fix:quick-sort-code-mistakes #193
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首先原来的295行是少了个参数的。那按照我的理解，这里应该是将随机位置元素交换到最右边。 然后重新把改过的代码运行发现sort([4,3,5,5,4,5])是会得到[3,4,5,5,4,5]的，那按照我的理解，应该需要加上308行这样，去交换小于基准值和等于基准值两者的位置。因为left是是小于等于基准值的，而less是小于基准值。
与上次修改的原因一样
getLeft 和 getRight 如果该节点分别没有左节点和有节点，应该返回他本身吧。predecessor和successor的while的condition应该是在找到位置符合的时候停止，所以应该取反。
new MessageChannel返回的是两个message ports，所以不能这样使用。
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首先原来的295行是少了个参数的。那按照我的理解，这里应该是将随机位置元素交换到最右边。
然后重新把改过的代码运行发现sort([4,3,5,5,4,5])是会得到[3,4,5,5,4,5]的，那按照我的理解，应该需要加上308行这样，去交换小于基准值和等于基准值两者的位置。