166 lines
8.7 KiB
HTML
166 lines
8.7 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<title>ProgramingExam2_CalebFontenot.java</title>
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<body>
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<table width="100%"><tr><td align="center">C:\Users\ar114\Documents\NetBeansProjects\ProgramingExam2_CalebFontenot\src\main\java\com\mycompany\programingexam2_calebfontenot\ProgramingExam2_CalebFontenot.java</td></tr></table>
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<pre>
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<span class="comment">/*</span>
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<span class="comment"> * Click </span><span class="ST0">nbfs://nbhost/SystemFileSystem/Templates/Licenses/license-default.txt</span><span class="comment"> to change this license</span>
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<span class="comment"> * Click </span><span class="ST0">nbfs://nbhost/SystemFileSystem/Templates/Project/Maven2/JavaApp/src/main/java/$</span><span class="comment">{packagePath}/${mainClassName}.java to edit this template</span>
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<span class="comment"> */</span>
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<span class="literal">package</span> com.mycompany.programingexam2_calebfontenot;
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<span class="comment">/**</span>
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<span class="comment"> *</span>
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<span class="comment"> * </span><span class="ST1">@author</span> <span class="comment">ar114</span>
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<span class="comment">*/</span>
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<span class="literal">public</span> <span class="literal">class</span> <span class="ST2">ProgramingExam2_CalebFontenot</span><T> {
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Node<T> <span class="ST3">head</span>;
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Node<T> <span class="ST3">tail</span>;
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<span class="literal">class</span> <span class="ST2">Node</span><T> {
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T <span class="ST3">t</span>;
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Node<T> <span class="ST3">l</span>;
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Node<T> <span class="ST3">r</span>;
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}
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<span class="literal">public</span> T <span class="ST2">removeAt</span>(<span class="literal">int</span> pos) {
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<span class="literal">if</span> (pos < 0 || pos > size() - 1) {
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<span class="literal">throw</span> <span class="literal">new</span> IndexOutOfBoundsException();
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}
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<span class="comment">//list is empty</span>
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<span class="literal">if</span> (size() == 0) {
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<span class="literal">throw</span> <span class="literal">new</span> RuntimeException(<span class="string">"</span><span class="string">The list empty.</span><span class="string">"</span>);
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}
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T returnT = <span class="literal">null</span>;
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<span class="literal">if</span> (pos == 0)<span class="comment">//remove at 0</span>
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{
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Node<T> pointer = <span class="ST3">head</span>.<span class="ST3">r</span>;
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returnT = (T) <span class="ST3">head</span>.<span class="ST3">t</span>;
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pointer.<span class="ST3">l</span> = <span class="literal">null</span>;
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<span class="ST3">head</span> = pointer;
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} <span class="literal">else</span> <span class="literal">if</span> (pos == (size() - 1))<span class="comment">//remove at end</span>
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{
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Node<T> pointer = <span class="ST3">tail</span>.<span class="ST3">l</span>.<span class="ST3">l</span>;
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returnT = (T) <span class="ST3">tail</span>.<span class="ST3">t</span>;
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pointer.<span class="ST3">r</span> = <span class="literal">null</span>;
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<span class="ST3">tail</span> = pointer;
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} <span class="literal">else</span><span class="comment">//remove in the middle</span>
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{
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<span class="comment">// Iterate to the element position</span>
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Node<T> pointer = <span class="ST3">head</span>;
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<span class="literal">for</span> (<span class="literal">int</span> i = 0; i < pos - 1; ++i) {
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pointer = pointer.<span class="ST3">r</span>;
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}
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pointer.<span class="ST3">r</span> = pointer.<span class="ST3">r</span>.<span class="ST3">r</span>;
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pointer.<span class="ST3">l</span> = pointer.<span class="ST3">r</span>;
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returnT = (T) pointer.<span class="ST3">t</span>;
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}
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<span class="literal">return</span> returnT;
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}
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<span class="literal">public</span> <span class="literal">void</span> <span class="ST2">clear</span>() {
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<span class="ST3">head</span> = <span class="ST3">tail</span> = <span class="literal">null</span>;
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}
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<span class="literal">public</span> <span class="literal">void</span> <span class="ST2">addAt</span>(T t, <span class="literal">int</span> pos) {
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<span class="literal">if</span> (pos < 0 || pos > size()) {
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<span class="literal">throw</span> <span class="literal">new</span> IndexOutOfBoundsException();
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}
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Node<T> newNode = <span class="literal">new</span> Node<T>();
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newNode.<span class="ST3">t</span> = t;
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<span class="literal">if</span> (<span class="ST3">head</span> == <span class="literal">null</span>)<span class="comment">//list is empty</span>
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{
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<span class="ST3">head</span> = <span class="ST3">tail</span> = newNode;
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} <span class="literal">else</span> <span class="literal">if</span> (pos == 0)<span class="comment">//add at the front</span>
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{
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newNode.<span class="ST3">r</span> = <span class="ST3">head</span>;
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<span class="ST3">head</span>.<span class="ST3">l</span> = newNode;
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<span class="ST3">head</span> = newNode;
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} <span class="literal">else</span> <span class="literal">if</span> (pos == size())<span class="comment">//add at the end</span>
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{
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newNode.<span class="ST3">l</span> = <span class="ST3">tail</span>;
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<span class="ST3">tail</span>.<span class="ST3">r</span> = newNode;
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<span class="ST3">tail</span> = newNode;
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} <span class="literal">else</span><span class="comment">//middle</span>
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{
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Node<T> p = <span class="ST3">head</span>;
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<span class="literal">for</span> (<span class="literal">int</span> i = 0; i < pos - 1; ++i) {
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p = p.<span class="ST3">r</span>;
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}
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newNode.<span class="ST3">l</span> = p;
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newNode.<span class="ST3">r</span> = p.<span class="ST3">r</span>;
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p.<span class="ST3">r</span>.<span class="ST3">l</span> = newNode;
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p.<span class="ST3">r</span> = newNode;
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}
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}
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<span class="literal">public</span> <span class="literal">int</span> <span class="ST2">size</span>() {
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Node<T> p = <span class="ST3">head</span>;
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<span class="literal">int</span> count = 0;
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<span class="literal">while</span> (p != <span class="literal">null</span>) {
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count++;
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p = p.<span class="ST3">r</span>;
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}
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<span class="literal">return</span> count;
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}
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@Override
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<span class="literal">public</span> String <span class="ST2">toString</span>() {
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String s = <span class="string">""</span>;
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Node<T> p = <span class="ST3">head</span>;
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<span class="literal">while</span> (p != <span class="literal">null</span>) {
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s += p.<span class="ST3">t</span>.toString() + <span class="string">"</span> <span class="string">"</span>;
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p = p.<span class="ST3">r</span>;
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}
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<span class="literal">return</span> s;
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}
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<span class="literal">public</span> <span class="literal">static</span> <span class="literal">void</span> <span class="ST4">main</span>(String[] args) {
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ProgramingExam2_CalebFontenot<Integer> list = <span class="literal">new</span> ProgramingExam2_CalebFontenot<Integer>();
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list.addAt(20, 0);
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list.addAt(10, 0);
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list.addAt(40, 2);
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list.addAt(30, 2);
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list.addAt(50, 4);
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System.<span class="ST5">out</span>.println(list);
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System.<span class="ST5">out</span>.println(list.removeAt(0));
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System.<span class="ST5">out</span>.println(list);
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System.<span class="ST5">out</span>.println(list.removeAt(2));
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System.<span class="ST5">out</span>.println(list);
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System.<span class="ST5">out</span>.println(list.removeAt(2));
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System.<span class="ST5">out</span>.println(list.toString());
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}
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}
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</pre></body>
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