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关于图(Graph)的一些问题： (1)有n个顶点的有向强连通图最多有多少条边？最少有多少条边？ (2)表示有1 000个顶点、1 000条边的有向图的邻接矩阵有多少个矩阵元素？是否为稀疏矩阵？ (3)对于一个有向图，不用拓扑排序，如何判断图中是否存在环？
答案
更多“关于图（Graph)的一些问题： （1)有n个顶点的有向强连通图最多有多少条边？最少有多少条边？”相关的问题
第1题
A.数据对象Data Object
B.数据图Data Graph
C.元数据Met
D. Data
E.数据中介服务Data Mediator Service
第3题
本在两种商品间分配其预算:比萨饼和墨西哥玉米煎饼。
(1 )以横轴表示比萨饼，用图说明本的最优组合。
(2)假定现在对比萨饼征税，使得其价格上涨了20%，说明本现在的最优组合。
(3)假定比萨饼现在实行配给制，低于本要求的数量，说明本此时的最优组合。
Ben allocates his lunch budget between two goods, pizza and burritos.
a. Illustrate Ben' s optimal bundle on a graph with pizza on the horizontal axis.
b. Suppose now that pizza is taxed, causing the price to increase by 20 percent. Illustrate Ben' s new optimal bundle.
c. Suppose instead that pizza is rationed at a quantity less than Ben 's desired quantity. Illustrator Ben' s new optimal bundle.
第4题
关于堆的一些问题： (1)堆的存储表示是顺序的，还是链接的？ (2)设有一个最小堆，即堆中任意结点的关键字均大于它的左孩子和右孩子的关键字。其具有最大值的元素可能在什么地方？ (3)对n个元素进行初始建堆的过程中，最多做多少次数据比较(不用大O表示法)？
第5题
Part B
Study the following graph carefully and write an essay on the topic Private Car Ownership in China Increased Rapidly. You should:
(1) describe the graph,
(2)account for the implied meaning, and
(3)state your view.
You should write about 120 words and make full reference to the graph.
第6题
Part B
Below is a graph showing the contrast between TV watchers and movie watchers from 1980 to 2005. Study carefully the graph and write an essay titled Film is Giving Way to TV, making reference with the following points:
1. rise and fall of the numbers of watchers as indicated by the graph
2. the possible reason for the contrast
Your composition should be no less than 120 words. Quote as few figures as possible.
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第7题
Part B
Below is a graph showing the percentages of American overweight children (ages 6-11) from 1971 to 2002. Look at the graph and write an essay of about 120 words making reference to the following points:
1) percentage changes in the years
2) possible reasons for the percentage changes
第8题
Part B
Below is a graph showing the average number of hours a student spends on the computer per week. Look at the graph and write an essay of about 120 words making reference to the following points:
(1)The change of the hours a student spends on the computer per week from 1995 to 2005;
(2) The possible reasons of the change and the problems and difficulties college students face when they use computers.
第9题
Part B
Below is a graph showing characteristics of liked best city. Look at the graph and write an essay of about 120 words making reference of the following points:
(1) Which city do you like best？
(2) Why？
第10题
1 ) rise and fall of the numbers of watchers as indicated by the graph
2 ) the possible reason for the contrast
3) Your composition should be no less than 120 words. Quote as few figures as possible.
