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DFS
David Liu
Less than 1 minute
#
DFS
dfs时间复杂度分析:
通用:O(方案总数*构造每个方案的时间)
程序结构的艺术
入口函数
搜索函数
判断函数
打印函数
DFS优化策略
可行性剪枝
最优性剪枝
顺序优化
:优先搜索那些可能方案少的位置
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