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c761b59b50103f915d8a0a504956368ab13195fa
leetcode-master
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problems
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回溯总结.md
youngyangyang04
c761b59b50
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2020-09-18 16:51:32 +08:00
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集合问题
切割问题
子集问题
排列问题
棋盘问题
皇后问题
解数独
单层递归
双层递归
组合 子集问题
,
used[i-1] = false 来去重复, 啥问题 used[i-1] = true也是可以的来着