思路:首先将输入的各边长累加求和 即四边形周长sum, 后除4 即边长side,这样 通过DFS 搜索这些sticks能否组合成4根长度均为side 进而确定yes no。在此 就涉及到搜索顺序了-最优性剪枝: 不难理解 先搜索的小棒子 越长,组合构成side的方式就越少,搜索到结果的时间就越短。S...
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其他好文 时间:
2015-09-14 20:51:56
阅读次数:
145
Problem DescriptionXiao Ming is a citizen who's good at playing,he has lot's of gold cones which have square undersides,let's call them pyramids.Anyon...
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其他好文 时间:
2015-09-12 22:22:49
阅读次数:
370
Problem DescriptionTerrorists put some mines in a crowded square recently. The police evacuate all people in time before any mine explodes. Now the po...
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其他好文 时间:
2015-09-12 15:59:13
阅读次数:
192
Problem:Given a positive integern, find the least number of perfect square numbers (for example,1, 4, 9, 16, ...) which sum ton.For example, givenn=12...
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其他好文 时间:
2015-09-12 12:05:47
阅读次数:
120
Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n.For example, given n = 12, ...
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其他好文 时间:
2015-09-11 14:18:08
阅读次数:
427
Given a positive integern, find the least number of perfect square numbers (for example,1, 4, 9, 16, ...) which sum ton.For example, givenn=12, return...
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其他好文 时间:
2015-09-10 07:16:03
阅读次数:
170
Spiral Matrix IIGiven an integern, generate a square matrix filled with elements from 1 ton2in spiral order.For example,Givenn=3,You should return the...
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其他好文 时间:
2015-09-10 00:17:25
阅读次数:
157
Problem:Implementint sqrt(int x).Compute and return the square root ofx.Conclusion for Binary Search Problem:Binary search is such an elegant way of s...
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其他好文 时间:
2015-09-09 11:21:36
阅读次数:
138
Basis(基础):MSE(Mean Square Error 均方误差),LMS(LeastMean Square 最小均方),LSM(Least Square Methods 最小二乘法),MLE(MaximumLikelihood Estimation最大似然估计),QP(Quadratic ...
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其他好文 时间:
2015-09-08 15:30:02
阅读次数:
249
1. 无序ul标签: 一个无序列表: 咖啡 茶 牛奶 效果: type属性值:值描述disc默认值。实心圆。circle空心圆。square实心方块。 ...
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Web程序 时间:
2015-09-07 00:42:07
阅读次数:
218