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subsets之给定一个数列&生成该数列所有的子集&升序
(1)先假设数列的元素不重复,例如[ 4, 2 ,3 ],可知总共有2^3=8个子集,在加一个空集; (2)对数列排序,可方便生成子集升序[2, 3 , 4]; (3)每个子集对应一个二进制值,0-空集 1-> (2) 2->(3) 3->(2,3) …… 7->(2,3,4),二进制数1的位置对应数列中相应位置的数。遍历一遍可得结果。 (4)进一步,如果数列有重复怎么办?例如[ 2 , 3...
分类:其他好文   时间:2014-12-04 20:05:02    阅读次数:124
【LeetCode】Subsets II
Subsets IIGiven a collection of integers that might contain duplicates,S, return all possible subsets.Note:Elements in a subset must be in non-descend...
分类:其他好文   时间:2014-12-04 19:32:41    阅读次数:163
Subsets II
Given a collection of integers that might contain duplicates,S, return all possible subsets.Note:Elements in a subset must be in non-descending order....
分类:其他好文   时间:2014-12-03 22:47:54    阅读次数:153
【leetcode】Subsets (Medium) ☆
Given a set of distinct integers,S, return all possible subsets.Note:Elements in a subset must be in non-descending order.The solution set must not co...
分类:其他好文   时间:2014-11-23 17:25:14    阅读次数:198
leetcode[91] Subsets II
给定一个数组,返回所有的非重复的可能。例如给定IfS=[1,2,2], a solution is:[ [2], [1], [1,2,2], [2,2], [1,2], [] ]其实这题类似的有Combination和Subsets。有兴趣的可以看看之前的解题方法。那大概是第70题左右,十天以前做的...
分类:其他好文   时间:2014-11-23 15:43:49    阅读次数:145
LeetCode——Subsets
Given a set of distinct integers, S, return all possible subsets. Note: Elements in a subset must be in non-descending order.The solution set must not contain duplicate subsets. For exa...
分类:其他好文   时间:2014-11-23 14:34:54    阅读次数:158
Subsets II
Given a collection of integers that might contain duplicates,S, return all possible subsets.Note:Elements in a subset must be in non-descending order....
分类:其他好文   时间:2014-11-23 12:56:59    阅读次数:179
Subsets
Given a set of distinct integers,S, return all possible subsets.Note:Elements in a subset must be in non-descending order.The solution set must not co...
分类:其他好文   时间:2014-11-23 11:42:48    阅读次数:233
Subsets II
Given a collection of integers that might contain duplicates,S, return all possible subsets.Note:Elements in a subset must be in non-descending order....
分类:其他好文   时间:2014-11-21 14:03:57    阅读次数:160
Subsets 集合子集 回溯
Given a set of distinct integers,S, return all possible subsets.Note:Elements in a subset must be in non-descending order.The solution set must not co...
分类:其他好文   时间:2014-11-21 01:17:47    阅读次数:293
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