【题目】原文:1.3 Design an algorithm and write code
to remove the duplicate characters in a string without using any additional
buffer. NOTE: One or two add...
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其他好文 时间:
2014-06-02 21:32:04
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284
树形DP问题。定义:1.dp[u][1]表示u这个点设立糖果发放点且u这棵子树满足条件时的最少糖果点数2.dp[u][0]表示u这个点不设立发放点且u这棵子树满足条件时的最少糖果点数设v1,v2……vn为u的子节点,则转移方程:dp[u][1]=
sum(min(dp[vi][1],dp[vi][0...
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其他好文 时间:
2014-06-02 20:35:30
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262
环状合并石子问题。环状无非是第n个要和第1个相邻。可以复制该行石子到原来那行的右边即可达到目的。定义:dp[i][j]代表从第i堆合并至第j堆所要消耗的最小体力。转移方程:dp[i][j]=min(dp[i][k]+dp[k+1][j]+sum[i][j]);复杂度:O(n^3)。可考虑四边形优化。...
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其他好文 时间:
2014-06-02 20:34:03
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226
题意:即求给定n个数字(a1,a2,……an),不改变序列,分成M份,使每一份和的乘积最大。思路:dp[i][j]表示把前i个数字,分成j份所能得到的最大乘积。转移方程:dp[i][j]
= max{ dp[k][i-1]*sum(k+1,j) } 其中显然j#include #include #i...
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其他好文 时间:
2014-06-02 19:58:45
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242
1.Problem DescriptionGiven a sequence
a[1],a[2],a[3]......a[n], your job is to calculate the max sum of a
sub-sequence. For example, given (6,-1,5,4,-...
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其他好文 时间:
2014-06-02 17:36:53
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234
Merge Sorted ArrayGiven two sorted integer
arrays A and B, merge B into A as one sorted array.Note: You may assume that A
has enough space (size that ...
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其他好文 时间:
2014-06-01 12:04:32
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175
type node1=record go,next:longint;end; node2=record
l,r,mx,sum:longint;end;var i,x,y,n,q,tmp,cnt,sz,code:longint; ch,st:string;
fa:a...
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其他好文 时间:
2014-06-01 11:45:18
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374
【题目】
Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively.
Below is one possible representation of s1 = "great":
great
/ gr eat
/ \ / g r e at
/ ...
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其他好文 时间:
2014-06-01 09:41:05
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196
【题目】
Given two sorted integer arrays A and B, merge B into A as one sorted array.
Note:
You may assume that A has enough space (size that is greater or equal to m + n) to hold additional elements from B. The number of elements initialized in A and B are...
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其他好文 时间:
2014-06-01 09:21:16
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292
title:
Work out the first ten digits of the sum of the following one-hundred 50-digit numbers.
37107287533902102798797998220837590246510135740250
4637693767749000971264812489697007805041701826053...
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其他好文 时间:
2014-06-01 08:53:33
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276