https://wiki.freepascal.org/index.php?title=Basic_Pascal_Tutorial/Chapter_4/Recursion/bg&feed=atom&action=history
Basic Pascal Tutorial/Chapter 4/Recursion/bg - Revision history
2024-03-29T13:42:58Z
Revision history for this page on the wiki
MediaWiki 1.35.6
https://wiki.freepascal.org/index.php?title=Basic_Pascal_Tutorial/Chapter_4/Recursion/bg&diff=153878&oldid=prev
Kai Burghardt: bypass language bar/categorization template redirect [cf. discussion]
2022-08-20T14:20:05Z
<p>bypass language bar/categorization template redirect [cf. <a href="/Special:PermanentLink/149778#Cluttering_of_main_name_space" title="Special:PermanentLink/149778">discussion</a>]</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 14:20, 20 August 2022</td>
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Kai Burghardt
https://wiki.freepascal.org/index.php?title=Basic_Pascal_Tutorial/Chapter_4/Recursion/bg&diff=152766&oldid=prev
Kai Burghardt: bypass redirects [cf. discussion]
2022-08-06T00:11:13Z
<p>bypass redirects [cf. <a href="/Special:PermanentLink/149778#Cluttering_of_main_name_space" title="Special:PermanentLink/149778">discussion</a>]</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 00:11, 6 August 2022</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1" >Line 1:</td>
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<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>{{TYNavigator|Scope|<del class="diffchange diffchange-inline">Forward_Referencing</del>}}</div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>{{TYNavigator|<ins class="diffchange diffchange-inline">Chapter 4/</ins>Scope|<ins class="diffchange diffchange-inline">Chapter 4/Forward Referencing</ins>}}</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>4E - Recursion (author: Tao Yue, state: unchanged)</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>4E - Recursion (author: Tao Yue, state: unchanged)</div></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l36" >Line 36:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>В горния пример, условието за спиране е <tt>if num = 1</tt>. </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>В горния пример, условието за спиране е <tt>if num = 1</tt>. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>{{TYNavigator|Scope|<del class="diffchange diffchange-inline">Forward_Referencing</del>}}</div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>{{TYNavigator|<ins class="diffchange diffchange-inline">Chapter 4/</ins>Scope|<ins class="diffchange diffchange-inline">Chapter 4/Forward Referencing</ins>}}</div></td></tr>
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Kai Burghardt
https://wiki.freepascal.org/index.php?title=Basic_Pascal_Tutorial/Chapter_4/Recursion/bg&diff=150085&oldid=prev
Kai Burghardt: Kai Burghardt moved page Recursion/bg to Basic Pascal Tutorial/Chapter 4/Recursion/bg: tidy up main name space: create subpage hierarchy for basic Pascal tutorial [cf. [[Special: PermaLink/149778#Clut...
2022-02-03T01:54:07Z
<p>Kai Burghardt moved page <a href="/Recursion/bg" class="mw-redirect" title="Recursion/bg">Recursion/bg</a> to <a href="/Basic_Pascal_Tutorial/Chapter_4/Recursion/bg" title="Basic Pascal Tutorial/Chapter 4/Recursion/bg">Basic Pascal Tutorial/Chapter 4/Recursion/bg</a>: tidy up main name space: create subpage hierarchy for <a href="/Category:Basic_Pascal_Introduction/bg" title="Category:Basic Pascal Introduction/bg">basic Pascal tutorial</a> [cf. [[Special: PermaLink/149778#Clut...</p>
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<td colspan="1" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 01:54, 3 February 2022</td>
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Kai Burghardt
https://wiki.freepascal.org/index.php?title=Basic_Pascal_Tutorial/Chapter_4/Recursion/bg&diff=144659&oldid=prev
Alpinistbg at 13:01, 22 April 2021
2021-04-22T13:01:18Z
<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 13:01, 22 April 2021</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l32" >Line 32:</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Рекурсията задълбава докато се достигне до дадена точка, в която отговора е дефиниран, и след това се връща назад с този отговор, за да преизчисли всички дефиниции, които се градят върху нея. </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Рекурсията задълбава докато се достигне до дадена точка, в която отговора е дефиниран, и след това се връща назад с този отговор, за да преизчисли всички дефиниции, които се градят върху нея. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Всички рекурсивни процедури / функции трябва да имат условие за спиране на рекурсията, т.нар. <del class="diffchange diffchange-inline">основното </del>твърдение. При всички други условия рекурсията трябва да <del class="diffchange diffchange-inline">се </del>"задълбае" надолу. Ако няма условие за спиране, рекурсията или няма да се изпълни изобщо, или ще стане безкрайна. </div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Всички рекурсивни процедури / функции трябва да имат условие за спиране на рекурсията, т.нар. <ins class="diffchange diffchange-inline">основно </ins>твърдение. При всички други условия рекурсията трябва да "задълбае" надолу. Ако няма условие за спиране, рекурсията или няма да се изпълни изобщо, или ще стане безкрайна. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>В горния пример, условието за спиране е <tt>if num = 1</tt>. </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>В горния пример, условието за спиране е <tt>if num = 1</tt>. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{TYNavigator|Scope|Forward_Referencing}}</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{TYNavigator|Scope|Forward_Referencing}}</div></td></tr>
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Alpinistbg
https://wiki.freepascal.org/index.php?title=Basic_Pascal_Tutorial/Chapter_4/Recursion/bg&diff=144658&oldid=prev
Alpinistbg at 13:00, 22 April 2021
2021-04-22T13:00:31Z
<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 13:00, 22 April 2021</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l17" >Line 17:</td>
<td colspan="2" class="diff-lineno">Line 17:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></syntaxhighlight></div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Да предположим, че извикате <tt>Summation</tt> <del class="diffchange diffchange-inline">със </del><tt>3</tt>.</div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Да предположим, че извикате <tt>Summation</tt> <ins class="diffchange diffchange-inline">с </ins><tt>3</tt>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><syntaxhighlight lang=pascal></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><syntaxhighlight lang=pascal></div></td></tr>
<tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l25" >Line 25:</td>
<td colspan="2" class="diff-lineno">Line 25:</td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* <tt>Summation(3)</tt> става <tt>Summation(2) + 3</tt>.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* <tt>Summation(3)</tt> става <tt>Summation(2) + 3</tt>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* <tt>Summation(2)</tt> става <tt>Summation(1) + 2</tt>.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* <tt>Summation(2)</tt> става <tt>Summation(1) + 2</tt>.</div></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* <del class="diffchange diffchange-inline">At </del><tt>1</tt>, рекурсията спира и става <tt>1</tt>.</div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* <ins class="diffchange diffchange-inline">При </ins><tt>1</tt>, рекурсията спира и <ins class="diffchange diffchange-inline">резултатът </ins>става <tt>1</tt>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* <tt>Summation(2)</tt> става <tt>1 + 2 = 3</tt>.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* <tt>Summation(2)</tt> става <tt>1 + 2 = 3</tt>.</div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* <tt>Summation(3)</tt> става <tt>3 + 3 = 6</tt>.</div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>* <tt>Summation(3)</tt> става <tt>3 + 3 = 6</tt>.</div></td></tr>
</table>
Alpinistbg
https://wiki.freepascal.org/index.php?title=Basic_Pascal_Tutorial/Chapter_4/Recursion/bg&diff=144657&oldid=prev
Alpinistbg at 12:59, 22 April 2021
2021-04-22T12:59:15Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 12:59, 22 April 2021</td>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Рекурсия''' означава да позволите на функция или процедура да се извика сама до достигане на някакво ограничение. </div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>'''Рекурсия''' означава да позволите на функция или процедура да се извика сама до достигане на някакво ограничение. </div></td></tr>
<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td></tr>
<tr><td class='diff-marker'>−</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Функцията за сумиране, обозначена с главна буква ''сигма'' (& Sigma;) в математиката, може да бъде записана рекурсивно: </div></td><td class='diff-marker'>+</td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Функцията за сумиране, обозначена с главна буква ''сигма'' (&Sigma;) в математиката, може да бъде записана рекурсивно: </div></td></tr>
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<tr><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><syntaxhighlight lang=pascal></div></td><td class='diff-marker'> </td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><syntaxhighlight lang=pascal></div></td></tr>
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Alpinistbg
https://wiki.freepascal.org/index.php?title=Basic_Pascal_Tutorial/Chapter_4/Recursion/bg&diff=144656&oldid=prev
Alpinistbg: Created page with "{{Recursion}} {{TYNavigator|Scope|Forward_Referencing}} 4E - Recursion (author: Tao Yue, state: unchanged) '''Рекурсия''' означава да позволите н..."
2021-04-22T12:58:48Z
<p>Created page with "{{Recursion}} {{TYNavigator|Scope|Forward_Referencing}} 4E - Recursion (author: Tao Yue, state: unchanged) '''Рекурсия''' означава да позволите н..."</p>
<p><b>New page</b></p><div>{{Recursion}}<br />
{{TYNavigator|Scope|Forward_Referencing}}<br />
<br />
4E - Recursion (author: Tao Yue, state: unchanged)<br />
<br />
'''Рекурсия''' означава да позволите на функция или процедура да се извика сама до достигане на някакво ограничение. <br />
<br />
Функцията за сумиране, обозначена с главна буква ''сигма'' (& Sigma;) в математиката, може да бъде записана рекурсивно: <br />
<br />
<syntaxhighlight lang=pascal><br />
function Summation (num : integer) : integer;<br />
begin<br />
if num = 1 <br />
then Summation := 1<br />
else Summation := Summation(num-1) + num<br />
end;<br />
</syntaxhighlight><br />
<br />
Да предположим, че извикате <tt>Summation</tt> със <tt>3</tt>.<br />
<br />
<syntaxhighlight lang=pascal><br />
a := Summation(3);<br />
</syntaxhighlight><br />
<br />
* <tt>Summation(3)</tt> става <tt>Summation(2) + 3</tt>.<br />
* <tt>Summation(2)</tt> става <tt>Summation(1) + 2</tt>.<br />
* At <tt>1</tt>, рекурсията спира и става <tt>1</tt>.<br />
* <tt>Summation(2)</tt> става <tt>1 + 2 = 3</tt>.<br />
* <tt>Summation(3)</tt> става <tt>3 + 3 = 6</tt>.<br />
* <tt>a</tt> става <tt>6</tt>.<br />
<br />
Рекурсията задълбава докато се достигне до дадена точка, в която отговора е дефиниран, и след това се връща назад с този отговор, за да преизчисли всички дефиниции, които се градят върху нея. <br />
<br />
Всички рекурсивни процедури / функции трябва да имат условие за спиране на рекурсията, т.нар. основното твърдение. При всички други условия рекурсията трябва да се "задълбае" надолу. Ако няма условие за спиране, рекурсията или няма да се изпълни изобщо, или ще стане безкрайна. <br />
<br />
В горния пример, условието за спиране е <tt>if num = 1</tt>. <br />
<br />
{{TYNavigator|Scope|Forward_Referencing}}</div>
Alpinistbg