Divide two integers without using multiplication, division and mod operator.显然,如果光用减法太慢。让商为N,那么需要用O(N)的时间。这里要求比较苛刻,连乘法都不能使用,所以只能寄希望于二进制操作了。这里可以把除数表示为:...
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其他好文 时间:
2014-11-11 01:57:47
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215
Multiplication Puzzle
Time Limit: 1000MS
Memory Limit: 65536K
Total Submissions: 6511
Accepted: 3964
Description
The multiplication puzzle is played with a row of cards...
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其他好文 时间:
2014-11-10 23:29:59
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232
Given two numbers represented as strings, return multiplication of the numbers as a string.
Note: The numbers can be arbitrarily large and are non-negative.
public class Solution {
//模拟手算乘法
...
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编程语言 时间:
2014-10-29 09:14:28
阅读次数:
168
题目:Given two numbers represented as strings, return multiplication of the numbers as a string.Note: The numbers can be arbitrarily large and are non-n...
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其他好文 时间:
2014-10-28 00:23:08
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321
传送门@百度Multiplication PuzzleTime Limit: 1000MSMemory Limit: 65536KDescriptionThe multiplication puzzle is played with a row of cards, each containing a...
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其他好文 时间:
2014-10-27 12:22:13
阅读次数:
149
Given two numbers represented as strings, return multiplication of the numbers as a string.
Note: The numbers can be arbitrarily large and are non-negative.
class Solution {
public:
std::str...
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其他好文 时间:
2014-10-25 09:21:02
阅读次数:
155
Divide Two IntegersDivide two integers without using multiplication, division and mod operator.SOLUTION 11. 基本思想是不断地减掉除数,直到为0为止。但是这样会太慢。2. 我们可以使用2分法来加...
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其他好文 时间:
2014-10-24 22:02:06
阅读次数:
279
Bizon the Champion isn't just charming, he also is very smart.
While some of us were learning the multiplication table, Bizon the Champion had fun in his own manner. Bizon the Champion painted an n...
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其他好文 时间:
2014-10-23 08:14:55
阅读次数:
139
题意:n个数(3
题目链接:http://poj.org/problem?id=1651
——>>状态:dp[i][j]表示第i个数到第j个数组成的序列的最小权值和。
状态转移方程:dp[i][j] = min(dp[i][j], dp[i][k] + dp[k][j] + a[i] * a[k] * a[j]);(枚举最后一个拿掉的数来更新)
时间复杂度:O(n ^ 3)
#incl...
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其他好文 时间:
2014-10-21 12:22:37
阅读次数:
147
Divide two integers without using multiplication, division and mod operator.分析:题目意思很容易理解,就是不用乘除法和模运算求来做除法,很容易想到的一个方法是一直做减法,然后计数,超时。在网上找到一种解法,利用位运算,意思是...
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其他好文 时间:
2014-10-21 02:10:36
阅读次数:
185