浏览器前进后退.ipynb

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   "source": [
    "# 平时看网页有前进后退的功能"
   ]
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  {
   "cell_type": "code",
   "execution_count": null,
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    "# 这里用两个栈来实现"
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   "execution_count": null,
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   "source": [
    "# 比如观看了ABC三个页面，这时候依次存进第一个栈，然后要后退的话就把C存进第二个栈，前进再从第二个栈取出到第一个栈就行"
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