题目链接Implement next permutation, which rearranges
numbers into the lexicographically next greater permutation of numbers.If such
arrangement is not pos...
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其他好文 时间：
2014-06-07 11:10:30
阅读次数：
212
var firstForLoop = 0for i in 0...3 { firstForLoop
+= i i}firstForLoop1 两个点代表是左闭右开 即0，1，22 三个点代表全集合 即0，1，2，3func sumOf(numbers:
Int...) -> Int { ...
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其他好文 时间：
2014-06-06 13:57:57
阅读次数：
196
Given a sorted linked list, delete all nodes
that have duplicate numbers, leaving onlydistinctnumbers from the original
list.For example,Given1->2->3-...
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其他好文 时间：
2014-06-06 06:57:18
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271
Given an array of integers, find two numbers
such that they add up to a specific target number.The function twoSum should
return indices of the two nu...
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其他好文 时间：
2014-06-05 14:15:07
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221
Power of CryptographyDescriptionCurrent work in
cryptography involves (among other things) large prime numbers and computing
powers of numbers among t...
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其他好文 时间：
2014-06-04 16:27:41
阅读次数：
248
问题描述：
Let d(n) be defined as the sum of proper divisors of n (numbers less than n which divide evenly into n).
If d(a) = b and d(b) = a, where a b, then a and b are
an amicable pair and each ...
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编程语言 时间：
2014-06-02 12:31:42
阅读次数：
298
You are given two linked lists representing two
non-negative numbers. The digits are stored in reverse order and each of their
nodes contain a single ...
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其他好文 时间：
2014-06-01 17:05:44
阅读次数：
296
问题：
Given a collection of numbers, return all possible permutations.
For example,
[1,2,3] have the following permutations:
[1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2],
and [3,2,1].
分析：
...
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其他好文 时间：
2014-06-01 15:04:42
阅读次数：
259
??
Description
Given N numbers, X1,
X2, ... , XN, let us calculate the difference of every pair of numbers: ∣Xi
- Xj∣ (1 ≤ i
＜ j ≤ N). We can get C(N,2) differences through this work, and no...
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其他好文 时间：
2014-06-01 14:07:56
阅读次数：
347
问题：
Given a collection of numbers that might contain duplicates, return all possible unique permutations.
For example,
[1,1,2] have the following unique permutations:
[1,1,2], [1,2,1],
and...
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其他好文 时间：
2014-06-01 13:03:12
阅读次数：
324
