皮皮学，免费搜题
登录
搜题
【单选题】
八皇后问题的遗传算法求解。八皇后问题是一个以国际象棋为背景的问题：如何能够在8×8的国际象棋棋盘上放置八个皇后，使得任何一个皇后都无法直接吃掉其他的皇后？为了达到此目的，个皇后都不能处于同一条横行、纵行或斜线上。下图给出了八皇后问题的一个解。回答问题。 【图片】八皇后问题的建模。将棋盘抽象为n×n的矩阵(此时n=8，但抽象不限于n=8，可以是n皇后问题)，【图片】=1表示放置皇后，【图片】=0表示未放置皇后，其目标函数为【图片】。因此八皇后问题求解的关键是设计约束条件，即满足什么条件的可能是可行解，而任何一个可行解满意解。有三个公式，表达了某种约束条件(注意，不能确定给出的公式一定是正确的)，下列说法不正确的是_____。 【图片】A.
式 1 表达的是任何一列中的皇后个数只能有一个
B.
式 2 表达的是任何一行中的皇后个数只能有一个
C.
式 3 表达的是任何两个皇后不能位于同一条 45 度或 135 度斜线上
D.
上述有不正确的
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】二氧化氯（ClO 2 ）是一种黄绿色有刺激性气味的气体，其熔点为-59℃，沸点为11.0℃，易溶于水．工业上用稍潮湿的KClO 3 和草酸（H 2 C 2 O 4 ）在60℃时反应制得．某学生拟用如图所示装置模拟工业制取并收集ClO 2 ． （1）A中反应产物有K 2 CO 3 、ClO 2 和CO 2 等，请写出该反应的化学方程式： ． （2）A必须添加温度控制装置，除酒精灯外，还需要的玻璃仪器...
【简答题】The GDP per
capita of a country is lower than that of France. If the GDP per capita
of the country is adjusted for PPP, the country's revised GDP is higher
than that of France. Which of the followi...
【简答题】The GDP per
capita of a country is lower than that of France. If the GDP per capita
of the country is adjusted for PPP, the country's revised GDP is higher
than that of France. Which of the followi...
【简答题】请分别应用电源等效变换、叠加原理和戴维宁等效电路的方法求下图(a)电路中的电流i。则i=____A.
【简答题】The
GDP per capita of a country is higher than that of Thailand. If the GDP
per capita of the country is adjusted for PPP, the country's revised
GDP is lower than that of Thailand. Which of the fol...
【单选题】The GDP per capita of a country is higher than that of Thailand. If the GDP per capita of the country is adjusted for PPP, the country's revised GDP is lower than that of Thailand. Which of the follow...
A.
There are fewer goods available for purchase in the country than in Thailand.
B.
The cost to buy everyday goods in the country is approximately the same as in Thailand.
C.
It costs less to buy everyday goods in the country than in Thailand.
D.
It costs more to buy everyday goods in the country than in Thailand.
【单选题】If the goods pass through a third country, but the third country is not involved in the trade process, as far as the third country is concerned, it is
A.
triangular trade
B.
export trade
C.
import trade
D.
transit trade
【单选题】The GDP per capita of a country is lower than that of France. If the GDP per capita of the country is adjusted for PPP, the country's revised GDP is higher than that of France. Which of the following ...
A.
The cost of living in the country is higher than that of France.
B.
The cost of living in the country is lower than that of France.
C.
The cost of living in the country is approximately equal to that of France.
D.
The cost of living in the country has increased over the past decade.
相关题目：
参考解析：
知识点：
题目纠错 0
发布
