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lista_pokazivac.h

#include <cstdio>

struct list { 
	igra vr;
	list* sl; 
};

typedef list* element;
typedef list lista; 

element FirstL(lista *L) {
	return L; 
}

element EndL(lista* L){ 
        while (L->sl!=NULL) 
              L = L->sl; 
        return L; 
}

element NextL(element elem, lista *L){ 
	return elem->sl;
}

element PreviousL(element elem, lista *L){ 
	while (L->sl!=elem)
		L = L->sl;
	return L;
}

element LocateL(igra M, lista *L){ 
	while (L->sl->vr.zanr!=M.zanr)
		L = L->sl;
	return L;
}

bool InsertL(igra M, element elem, lista *L){ 
	element privp = new lista; 
    privp->vr = M; 
    privp->sl = elem->sl; 
    elem->sl = privp; 
    return true; 
}

void DeleteL(element elem, lista *L){
	element obris = elem->sl;
	elem->sl = obris->sl;
	delete obris; 
}

igra RetrieveL(element elem, lista *L){ 
		return elem->sl->vr;
}

void DeleteAllL(lista *L){ 
	element obris = L->sl;
	while (obris!=NULL) {
		L->sl = obris->sl;
		delete obris;
		obris = L->sl;
	}
}

void InitL(lista* L){
     L->sl = NULL; 
}

Description

Implementacija liste pomocu pokazivaca.
https://snipt.net/embed/1b8af0d70561da03e78e341d01f8b482/
/raw/1b8af0d70561da03e78e341d01f8b482/
1b8af0d70561da03e78e341d01f8b482
cpp
C++
66
2019-06-20T15:03:26
True
False
False
Nov 16, 2014 at 02:35 PM
/api/public/snipt/137166/
lista_pokazivach-a9534a0e
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a> <a href="#L-17">17</a> <a href="#L-18">18</a> <a href="#L-19">19</a> <a href="#L-20">20</a> <a href="#L-21">21</a> <a href="#L-22">22</a> <a href="#L-23">23</a> <a href="#L-24">24</a> <a href="#L-25">25</a> <a href="#L-26">26</a> <a href="#L-27">27</a> <a href="#L-28">28</a> <a href="#L-29">29</a> <a href="#L-30">30</a> <a href="#L-31">31</a> <a href="#L-32">32</a> <a href="#L-33">33</a> <a href="#L-34">34</a> <a href="#L-35">35</a> <a href="#L-36">36</a> <a href="#L-37">37</a> <a href="#L-38">38</a> <a href="#L-39">39</a> <a href="#L-40">40</a> <a href="#L-41">41</a> <a href="#L-42">42</a> <a href="#L-43">43</a> <a href="#L-44">44</a> <a href="#L-45">45</a> <a href="#L-46">46</a> <a href="#L-47">47</a> <a href="#L-48">48</a> <a href="#L-49">49</a> <a href="#L-50">50</a> <a href="#L-51">51</a> <a href="#L-52">52</a> <a href="#L-53">53</a> <a href="#L-54">54</a> <a href="#L-55">55</a> <a href="#L-56">56</a> <a href="#L-57">57</a> <a href="#L-58">58</a> <a href="#L-59">59</a> <a href="#L-60">60</a> <a href="#L-61">61</a> <a href="#L-62">62</a> <a href="#L-63">63</a> <a href="#L-64">64</a> <a href="#L-65">65</a> <a href="#L-66">66</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="cp">#include</span> <span class="cpf">&lt;cstdio&gt;</span><span class="cp"></span> </span><span id="L-2"><a name="L-2"></a> </span><span id="L-3"><a name="L-3"></a><span class="k">struct</span> <span class="n">list</span> <span class="p">{</span> </span><span id="L-4"><a name="L-4"></a> <span class="n">igra</span> <span class="n">vr</span><span class="p">;</span> </span><span id="L-5"><a name="L-5"></a> <span class="n">list</span><span class="o">*</span> <span class="n">sl</span><span class="p">;</span> </span><span id="L-6"><a name="L-6"></a><span class="p">};</span> </span><span id="L-7"><a name="L-7"></a> </span><span id="L-8"><a name="L-8"></a><span class="k">typedef</span> <span class="n">list</span><span class="o">*</span> <span class="n">element</span><span class="p">;</span> </span><span id="L-9"><a name="L-9"></a><span class="k">typedef</span> <span class="n">list</span> <span class="n">lista</span><span class="p">;</span> </span><span id="L-10"><a name="L-10"></a> </span><span id="L-11"><a name="L-11"></a><span class="n">element</span> <span class="nf">FirstL</span><span class="p">(</span><span class="n">lista</span> <span class="o">*</span><span class="n">L</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-12"><a name="L-12"></a> <span class="k">return</span> <span class="n">L</span><span class="p">;</span> </span><span id="L-13"><a name="L-13"></a><span class="p">}</span> </span><span id="L-14"><a name="L-14"></a> </span><span id="L-15"><a name="L-15"></a><span class="n">element</span> <span class="nf">EndL</span><span class="p">(</span><span class="n">lista</span><span class="o">*</span> <span class="n">L</span><span class="p">){</span> </span><span id="L-16"><a name="L-16"></a> <span class="k">while</span> <span class="p">(</span><span class="n">L</span><span class="o">-&gt;</span><span class="n">sl</span><span class="o">!=</span><span class="nb">NULL</span><span class="p">)</span> </span><span id="L-17"><a name="L-17"></a> <span class="n">L</span> <span class="o">=</span> <span class="n">L</span><span class="o">-&gt;</span><span class="n">sl</span><span class="p">;</span> </span><span id="L-18"><a name="L-18"></a> <span class="k">return</span> <span class="n">L</span><span class="p">;</span> </span><span id="L-19"><a name="L-19"></a><span class="p">}</span> </span><span id="L-20"><a name="L-20"></a> </span><span id="L-21"><a name="L-21"></a><span class="n">element</span> <span class="nf">NextL</span><span class="p">(</span><span class="n">element</span> <span class="n">elem</span><span class="p">,</span> <span class="n">lista</span> <span class="o">*</span><span class="n">L</span><span class="p">){</span> </span><span id="L-22"><a name="L-22"></a> <span class="k">return</span> <span class="n">elem</span><span class="o">-&gt;</span><span class="n">sl</span><span class="p">;</span> </span><span id="L-23"><a name="L-23"></a><span class="p">}</span> </span><span id="L-24"><a name="L-24"></a> </span><span id="L-25"><a name="L-25"></a><span class="n">element</span> <span class="nf">PreviousL</span><span class="p">(</span><span class="n">element</span> <span class="n">elem</span><span class="p">,</span> <span class="n">lista</span> <span class="o">*</span><span class="n">L</span><span class="p">){</span> </span><span id="L-26"><a name="L-26"></a> <span class="k">while</span> <span class="p">(</span><span class="n">L</span><span class="o">-&gt;</span><span class="n">sl</span><span class="o">!=</span><span class="n">elem</span><span class="p">)</span> </span><span id="L-27"><a name="L-27"></a> <span class="n">L</span> <span class="o">=</span> <span class="n">L</span><span class="o">-&gt;</span><span class="n">sl</span><span class="p">;</span> </span><span id="L-28"><a name="L-28"></a> <span class="k">return</span> <span class="n">L</span><span class="p">;</span> </span><span id="L-29"><a name="L-29"></a><span class="p">}</span> </span><span id="L-30"><a name="L-30"></a> </span><span id="L-31"><a name="L-31"></a><span class="n">element</span> <span class="nf">LocateL</span><span class="p">(</span><span class="n">igra</span> <span class="n">M</span><span class="p">,</span> <span class="n">lista</span> <span class="o">*</span><span class="n">L</span><span class="p">){</span> </span><span id="L-32"><a name="L-32"></a> <span class="k">while</span> <span class="p">(</span><span class="n">L</span><span class="o">-&gt;</span><span class="n">sl</span><span class="o">-&gt;</span><span class="n">vr</span><span class="p">.</span><span class="n">zanr</span><span class="o">!=</span><span class="n">M</span><span class="p">.</span><span class="n">zanr</span><span class="p">)</span> </span><span id="L-33"><a name="L-33"></a> <span class="n">L</span> <span class="o">=</span> <span class="n">L</span><span class="o">-&gt;</span><span class="n">sl</span><span class="p">;</span> </span><span id="L-34"><a name="L-34"></a> <span class="k">return</span> <span class="n">L</span><span class="p">;</span> </span><span id="L-35"><a name="L-35"></a><span class="p">}</span> </span><span id="L-36"><a name="L-36"></a> </span><span id="L-37"><a name="L-37"></a><span class="kt">bool</span> <span class="nf">InsertL</span><span class="p">(</span><span class="n">igra</span> <span class="n">M</span><span class="p">,</span> <span class="n">element</span> <span class="n">elem</span><span class="p">,</span> <span class="n">lista</span> <span class="o">*</span><span class="n">L</span><span class="p">){</span> </span><span id="L-38"><a name="L-38"></a> <span class="n">element</span> <span class="n">privp</span> <span class="o">=</span> <span class="k">new</span> <span class="n">lista</span><span class="p">;</span> </span><span id="L-39"><a name="L-39"></a> <span class="n">privp</span><span class="o">-&gt;</span><span class="n">vr</span> <span class="o">=</span> <span class="n">M</span><span class="p">;</span> </span><span id="L-40"><a name="L-40"></a> <span class="n">privp</span><span class="o">-&gt;</span><span class="n">sl</span> <span class="o">=</span> <span class="n">elem</span><span class="o">-&gt;</span><span class="n">sl</span><span class="p">;</span> </span><span id="L-41"><a name="L-41"></a> <span class="n">elem</span><span class="o">-&gt;</span><span class="n">sl</span> <span class="o">=</span> <span class="n">privp</span><span class="p">;</span> </span><span id="L-42"><a name="L-42"></a> <span class="k">return</span> <span class="nb">true</span><span class="p">;</span> </span><span id="L-43"><a name="L-43"></a><span class="p">}</span> </span><span id="L-44"><a name="L-44"></a> </span><span id="L-45"><a name="L-45"></a><span class="kt">void</span> <span class="nf">DeleteL</span><span class="p">(</span><span class="n">element</span> <span class="n">elem</span><span class="p">,</span> <span class="n">lista</span> <span class="o">*</span><span class="n">L</span><span class="p">){</span> </span><span id="L-46"><a name="L-46"></a> <span class="n">element</span> <span class="n">obris</span> <span class="o">=</span> <span class="n">elem</span><span class="o">-&gt;</span><span class="n">sl</span><span class="p">;</span> </span><span id="L-47"><a name="L-47"></a> <span class="n">elem</span><span class="o">-&gt;</span><span class="n">sl</span> <span class="o">=</span> <span class="n">obris</span><span class="o">-&gt;</span><span class="n">sl</span><span class="p">;</span> </span><span id="L-48"><a name="L-48"></a> <span class="k">delete</span> <span class="n">obris</span><span class="p">;</span> </span><span id="L-49"><a name="L-49"></a><span class="p">}</span> </span><span id="L-50"><a name="L-50"></a> </span><span id="L-51"><a name="L-51"></a><span class="n">igra</span> <span class="nf">RetrieveL</span><span class="p">(</span><span class="n">element</span> <span class="n">elem</span><span class="p">,</span> <span class="n">lista</span> <span class="o">*</span><span class="n">L</span><span class="p">){</span> </span><span id="L-52"><a name="L-52"></a> <span class="k">return</span> <span class="n">elem</span><span class="o">-&gt;</span><span class="n">sl</span><span class="o">-&gt;</span><span class="n">vr</span><span class="p">;</span> </span><span id="L-53"><a name="L-53"></a><span class="p">}</span> </span><span id="L-54"><a name="L-54"></a> </span><span id="L-55"><a name="L-55"></a><span class="kt">void</span> <span class="nf">DeleteAllL</span><span class="p">(</span><span class="n">lista</span> <span class="o">*</span><span class="n">L</span><span class="p">){</span> </span><span id="L-56"><a name="L-56"></a> <span class="n">element</span> <span class="n">obris</span> <span class="o">=</span> <span class="n">L</span><span class="o">-&gt;</span><span class="n">sl</span><span class="p">;</span> </span><span id="L-57"><a name="L-57"></a> <span class="k">while</span> <span class="p">(</span><span class="n">obris</span><span class="o">!=</span><span class="nb">NULL</span><span class="p">)</span> <span class="p">{</span> </span><span id="L-58"><a name="L-58"></a> <span class="n">L</span><span class="o">-&gt;</span><span class="n">sl</span> <span class="o">=</span> <span class="n">obris</span><span class="o">-&gt;</span><span class="n">sl</span><span class="p">;</span> </span><span id="L-59"><a name="L-59"></a> <span class="k">delete</span> <span class="n">obris</span><span class="p">;</span> </span><span id="L-60"><a name="L-60"></a> <span class="n">obris</span> <span class="o">=</span> <span class="n">L</span><span class="o">-&gt;</span><span class="n">sl</span><span class="p">;</span> </span><span id="L-61"><a name="L-61"></a> <span class="p">}</span> </span><span id="L-62"><a name="L-62"></a><span class="p">}</span> </span><span id="L-63"><a name="L-63"></a> </span><span id="L-64"><a name="L-64"></a><span class="kt">void</span> <span class="nf">InitL</span><span class="p">(</span><span class="n">lista</span><span class="o">*</span> <span class="n">L</span><span class="p">){</span> </span><span id="L-65"><a name="L-65"></a> <span class="n">L</span><span class="o">-&gt;</span><span class="n">sl</span> <span class="o">=</span> <span class="nb">NULL</span><span class="p">;</span> </span><span id="L-66"><a name="L-66"></a><span class="p">}</span> </span></pre></div> </td></tr></table>
lista, pokazivaci