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来自「浙江大学计算机学院数据结构课程的教学课件」· HTM 代码 · 共 50 行
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<b>|</b><font face="宋体" size="2">第一章</font><b>|</b><font face="宋体" size="2"><a href="../text2/text2-0.htm">第二章</a></font><b>|</b><font face="宋体" size="2"><a href="../text3/text3-0.htm">第三章</a></font><b>|</b><font face="宋体" size="2"><a href="../text4/text4-0.htm">第四章</a></font><b>|</b><font face="宋体" size="2"><a href="../text5/text5-0.htm">第五章</a></font><b>|</b><font face="宋体" size="2"><a href="../text6/text6-0.htm">第六章</a></font><b>|</b><font face="宋体" size="2"><a href="../text7/text7-0.htm">第七章</a></font><b>|</b><font face="宋体" size="2"><a href="../text8/text8-0.htm">第八章</a></font><b>|</b><font face="宋体" size="2"><a href="../text9/text9-0.htm">第九章</a></font><b>|</b><font face="宋体" size="2"><a href="../text10/text10-0.htm">第十章</a></font><b>|</b><font size="2" face="宋体"><a href="../textA/textA-0.htm">算法分析</a><b><font color="#000000">|</font></b>
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<pre><font face="Arial, Helvetica, sans-serif" color="#000000" size="4"></font><font face="Arial, Helvetica, sans-serif" size="4"><b>
1.2 Algorithm Specification
【<font color="#FF0033">definition</font>】An algorithm is a finite set of instructions that, if
followed, accomplishes a particular task, In addition, all algori-
thms must satisfy the following criteria:<br>
(1) Input. There are zero or more quantities that are externally
applied.
(2) Output. At least one quantity is produced.
(3) Definiteness. Each instruction is clear and unambiguous.
(4) Finiteness. If we trace out the instructions of an algorithm.
then for all cases, the algorithm terminates after finite
number of steps.
(5) Effectiveness. Every instruction must be basic enough to be
carried out, in principle, by a person using only pencil and
paper, It is not enough that each operation be definite as
in (3); it also must be feasible.
The <font color="#FF0066">distinguishes</font> between an algorithm and a program:
<font color="#3333FF">Program</font>
-- does not have to satisfy(4) (operation system)
<font color="#3333FF">algorithm</font>
--may was natural language、graphic、a programming Language</b></font><font face="Arial, Helvetica, sans-serif" color="#000000" size="4"><b> </b></font></pre>
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