deploy: fda9fec

Author: yanglbme

en/lc/604/index.html

@@ -21458,9 +21458,9 @@
       <ul class="md-nav__list">
 
           <li class="md-nav__item">
-  <a href="#solution-1" class="md-nav__link">
+  <a href="#solution-1-parsing-and-storing" class="md-nav__link">
     <span class="md-ellipsis">
-      Solution 1
+      Solution 1: Parsing and Storing
     </span>
   </a>
 
@@ -91169,8 +91169,11 @@ <h2 id="description">Description</h2>
 <h2 id="solutions">Solutions</h2>
 <!-- solution:start -->
 
-<h3 id="solution-1">Solution 1</h3>
-<div class="tabbed-set tabbed-alternate" data-tabs="1:4"><input checked="checked" id="__tabbed_1_1" name="__tabbed_1" type="radio" /><input id="__tabbed_1_2" name="__tabbed_1" type="radio" /><input id="__tabbed_1_3" name="__tabbed_1" type="radio" /><input id="__tabbed_1_4" name="__tabbed_1" type="radio" /><div class="tabbed-labels"><label for="__tabbed_1_1">Python3</label><label for="__tabbed_1_2">Java</label><label for="__tabbed_1_3">C++</label><label for="__tabbed_1_4">Go</label></div>
+<h3 id="solution-1-parsing-and-storing">Solution 1: Parsing and Storing</h3>
+<p>Parse the <code>compressedString</code> into characters <span class="arithmatex">\(c\)</span> and their corresponding repetition counts <span class="arithmatex">\(x\)</span>, and store them in an array or list <span class="arithmatex">\(d\)</span>. Use <span class="arithmatex">\(p\)</span> to point to the current character.</p>
+<p>Then perform operations in <code>next</code> and <code>hasNext</code>.</p>
+<p>The initialization time complexity is <span class="arithmatex">\(O(n)\)</span>, and the time complexity of the other operations is <span class="arithmatex">\(O(1)\)</span>. Here, <span class="arithmatex">\(n\)</span> is the length of <code>compressedString</code>.</p>
+<div class="tabbed-set tabbed-alternate" data-tabs="1:5"><input checked="checked" id="__tabbed_1_1" name="__tabbed_1" type="radio" /><input id="__tabbed_1_2" name="__tabbed_1" type="radio" /><input id="__tabbed_1_3" name="__tabbed_1" type="radio" /><input id="__tabbed_1_4" name="__tabbed_1" type="radio" /><input id="__tabbed_1_5" name="__tabbed_1" type="radio" /><div class="tabbed-labels"><label for="__tabbed_1_1">Python3</label><label for="__tabbed_1_2">Java</label><label for="__tabbed_1_3">C++</label><label for="__tabbed_1_4">Go</label><label for="__tabbed_1_5">TypeScript</label></div>
 <div class="tabbed-content">
 <div class="tabbed-block">
 <div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal"> 1</span>
@@ -91518,6 +91521,92 @@ <h3 id="solution-1">Solution 1</h3>
 <span class="cm"> */</span>
 </code></pre></div></td></tr></table></div>
 </div>
+<div class="tabbed-block">
+<div class="highlight"><table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><span></span><span class="normal"> 1</span>
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+<span class="normal">42</span></pre></div></td><td class="code"><div><pre><span></span><code><span class="kd">class</span><span class="w"> </span><span class="nx">StringIterator</span><span class="w"> </span><span class="p">{</span>
+<span class="w">    </span><span class="k">private</span><span class="w"> </span><span class="nx">d</span><span class="o">:</span><span class="w"> </span><span class="p">[</span><span class="kt">string</span><span class="p">,</span><span class="w"> </span><span class="kt">number</span><span class="p">][]</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="p">[];</span>
+<span class="w">    </span><span class="k">private</span><span class="w"> </span><span class="nx">p</span><span class="o">:</span><span class="w"> </span><span class="kt">number</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span>
+
+<span class="w">    </span><span class="kr">constructor</span><span class="p">(</span><span class="nx">compressedString</span><span class="o">:</span><span class="w"> </span><span class="kt">string</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
+<span class="w">        </span><span class="kd">const</span><span class="w"> </span><span class="nx">n</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">compressedString</span><span class="p">.</span><span class="nx">length</span><span class="p">;</span>
+<span class="w">        </span><span class="kd">let</span><span class="w"> </span><span class="nx">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span>
+<span class="w">        </span><span class="k">while</span><span class="w"> </span><span class="p">(</span><span class="nx">i</span><span class="w"> </span><span class="o">&lt;</span><span class="w"> </span><span class="nx">n</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
+<span class="w">            </span><span class="kd">const</span><span class="w"> </span><span class="nx">c</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">compressedString</span><span class="p">[</span><span class="nx">i</span><span class="p">];</span>
+<span class="w">            </span><span class="kd">let</span><span class="w"> </span><span class="nx">x</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span>
+<span class="w">            </span><span class="nx">i</span><span class="o">++</span><span class="p">;</span>
+<span class="w">            </span><span class="k">while</span><span class="w"> </span><span class="p">(</span><span class="nx">i</span><span class="w"> </span><span class="o">&lt;</span><span class="w"> </span><span class="nx">n</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="o">!</span><span class="nb">isNaN</span><span class="p">(</span><span class="nb">Number</span><span class="p">(</span><span class="nx">compressedString</span><span class="p">[</span><span class="nx">i</span><span class="p">])))</span><span class="w"> </span><span class="p">{</span>
+<span class="w">                </span><span class="nx">x</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="nx">x</span><span class="w"> </span><span class="o">*</span><span class="w"> </span><span class="mf">10</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="nb">Number</span><span class="p">(</span><span class="nx">compressedString</span><span class="p">[</span><span class="nx">i</span><span class="p">]);</span>
+<span class="w">                </span><span class="nx">i</span><span class="o">++</span><span class="p">;</span>
+<span class="w">            </span><span class="p">}</span>
+<span class="w">            </span><span class="k">this</span><span class="p">.</span><span class="nx">d</span><span class="p">.</span><span class="nx">push</span><span class="p">([</span><span class="nx">c</span><span class="p">,</span><span class="w"> </span><span class="nx">x</span><span class="p">]);</span>
+<span class="w">        </span><span class="p">}</span>
+<span class="w">    </span><span class="p">}</span>
+
+<span class="w">    </span><span class="nx">next</span><span class="p">()</span><span class="o">:</span><span class="w"> </span><span class="kt">string</span><span class="w"> </span><span class="p">{</span>
+<span class="w">        </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="o">!</span><span class="k">this</span><span class="p">.</span><span class="nx">hasNext</span><span class="p">())</span><span class="w"> </span><span class="p">{</span>
+<span class="w">            </span><span class="k">return</span><span class="w"> </span><span class="s1">&#39; &#39;</span><span class="p">;</span>
+<span class="w">        </span><span class="p">}</span>
+<span class="w">        </span><span class="kd">const</span><span class="w"> </span><span class="nx">ans</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">d</span><span class="p">[</span><span class="k">this</span><span class="p">.</span><span class="nx">p</span><span class="p">][</span><span class="mf">0</span><span class="p">];</span>
+<span class="w">        </span><span class="k">this</span><span class="p">.</span><span class="nx">d</span><span class="p">[</span><span class="k">this</span><span class="p">.</span><span class="nx">p</span><span class="p">][</span><span class="mf">1</span><span class="p">]</span><span class="o">--</span><span class="p">;</span>
+<span class="w">        </span><span class="k">if</span><span class="w"> </span><span class="p">(</span><span class="k">this</span><span class="p">.</span><span class="nx">d</span><span class="p">[</span><span class="k">this</span><span class="p">.</span><span class="nx">p</span><span class="p">][</span><span class="mf">1</span><span class="p">]</span><span class="w"> </span><span class="o">===</span><span class="w"> </span><span class="mf">0</span><span class="p">)</span><span class="w"> </span><span class="p">{</span>
+<span class="w">            </span><span class="k">this</span><span class="p">.</span><span class="nx">p</span><span class="o">++</span><span class="p">;</span>
+<span class="w">        </span><span class="p">}</span>
+<span class="w">        </span><span class="k">return</span><span class="w"> </span><span class="nx">ans</span><span class="p">;</span>
+<span class="w">    </span><span class="p">}</span>
+
+<span class="w">    </span><span class="nx">hasNext</span><span class="p">()</span><span class="o">:</span><span class="w"> </span><span class="kt">boolean</span><span class="w"> </span><span class="p">{</span>
+<span class="w">        </span><span class="k">return</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">p</span><span class="w"> </span><span class="o">&lt;</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">d</span><span class="p">.</span><span class="nx">length</span><span class="w"> </span><span class="o">&amp;&amp;</span><span class="w"> </span><span class="k">this</span><span class="p">.</span><span class="nx">d</span><span class="p">[</span><span class="k">this</span><span class="p">.</span><span class="nx">p</span><span class="p">][</span><span class="mf">1</span><span class="p">]</span><span class="w"> </span><span class="o">&gt;</span><span class="w"> </span><span class="mf">0</span><span class="p">;</span>
+<span class="w">    </span><span class="p">}</span>
+<span class="p">}</span>
+
+<span class="cm">/**</span>
+<span class="cm"> * Your StringIterator object will be instantiated and called as such:</span>
+<span class="cm"> * var obj = new StringIterator(compressedString)</span>
+<span class="cm"> * var param_1 = obj.next()</span>
+<span class="cm"> * var param_2 = obj.hasNext()</span>
+<span class="cm"> */</span>
+</code></pre></div></td></tr></table></div>
+</div>
 </div>
 </div>
 <!-- solution:end -->