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 of a and
b...
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其他好文 时间:
2014-06-07 13:40:53
阅读次数:
226
原题地址:https://oj.leetcode.com/problems/triangle/题意:Given
a triangle, find the minimum path sum from top to bottom. Each step you may move
to adjacent n...
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编程语言 时间:
2014-06-06 17:31:34
阅读次数:
397
Problem DescriptionGiven a circle sequence
A[1],A[2],A[3]......A[n]. Circle sequence means the left neighbour of A[1] is
A[n] , and the right neighbou...
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其他好文 时间:
2014-06-06 14:52:21
阅读次数:
247
Given a binary tree containing digits
from0-9only, each root-to-leaf path could represent a number.An example is the
root-to-leaf path1->2->3which rep...
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其他好文 时间:
2014-06-06 12:38:42
阅读次数:
255
API: SafeArrayCreate SafeArrayDestroy
SafeArrayGetElement SafeArrayPutElement SafeArrayGetLBound SafeArrayGetUBound1
STDMETHODIMP CMath::Sum(VAR...
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其他好文 时间:
2014-06-06 10:09:56
阅读次数:
150
for(var i =0;i<100;i++) {
}alert(i);//100if(true){ var i="91d"; } alert(i);//91d function add(ad1,ad2){
sum=ad1+ad2; return sum;//如果没有用...
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Web程序 时间:
2014-06-06 09:25:07
阅读次数:
256
【题目大意】给你一个sum和一个limit,现在要你在1~limit中找到一些数来使得这些数的和等于sum,如果能找到的话就输出找到的数的个数和这些数,未找到输出"-1"。比赛的时候被hack了。【题目分析】这题需要将所有的数的lowbit先求出来,然后按照大小排序,然后从后往前判断,如果这个数小于...
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其他好文 时间:
2014-06-05 20:36:44
阅读次数:
307
Given two binary strings, return their sum
(also a binary string).For example,a ="11"b ="1"Return"100".public class
Solution { /**The program is us...
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其他好文 时间:
2014-06-05 14:08:35
阅读次数:
188
这里以3次方来举例讲一下这题的做法,其它维类似。如果要求某一个值的3次方那么sum =
t^3,设t = x+y。那也就是sum = (x+y)^3.假如我让每个数都加z t = x+y+z,我可以让新的y =
y+z,这里发现新来的总会加在y上,那么可以给他一个延迟,slz,那么新的值t = t ...
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其他好文 时间:
2014-06-03 16:14:05
阅读次数:
349
(from zhangwuji) $$\bex
\sum\limits_{n=0}^{\infty}\dfrac{n^3+2n+1}{(n^4+n^2+1)n!},\quad
\sum\limits_{n=0}^{\infty}\dfrac{1}{(n^4+n^2+1)n!}. \eex$$解答: ...
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其他好文 时间:
2014-06-03 15:31:55
阅读次数:
252