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【Java】排序
作者: / 发布于2011/1/14/ 595
<div><span style="color: #0000ff">import</span><span style="color: #000000"> java.util.</span><span style="color: #000000">*</span><span style="color: #000000">;

</span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">class</span><span style="color: #000000"> csdntest3{
 @SuppressWarnings(</span><span style="color: #000000">"</span><span style="color: #000000">unchecked</span><span style="color: #000000">"</span><span style="color: #000000">)
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">static</span><span style="color: #000000"> </span><span style="color: #0000ff">void</span><span style="color: #000000"> main(String[] args){
 List</span><span style="color: #000000"><</span><span style="color: #000000">Integer</span><span style="color: #000000">></span><span style="color: #000000"> list </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #0000ff">new</span><span style="color: #000000"> ArrayList</span><span style="color: #000000"><</span><span style="color: #000000">Integer</span><span style="color: #000000">></span><span style="color: #000000">();
 </span><span style="color: #0000ff">for</span><span style="color: #000000">(</span><span style="color: #0000ff">int</span><span style="color: #000000"> i </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">1</span><span style="color: #000000">; i </span><span style="color: #000000"><=</span><span style="color: #000000">5</span><span style="color: #000000">; i</span><span style="color: #000000">++</span><span style="color: #000000">){
 list.add(i);
 }
 
 Collections.sort(list, </span><span style="color: #0000ff">new</span><span style="color: #000000"> Comparatorsort());
 </span><span style="color: #0000ff">for</span><span style="color: #000000">(</span><span style="color: #0000ff">int</span><span style="color: #000000"> i </span><span style="color: #000000">=</span><span style="color: #000000"> </span><span style="color: #000000">0</span><span style="color: #000000">; i </span><span style="color: #000000"><</span><span style="color: #000000"> list.size(); i</span><span style="color: #000000">++</span><span style="color: #000000">){
 System.out.println(list.get(i));
 }
 }
}

</span><span style="color: #0000ff">class</span><span style="color: #000000"> Comparatorsort </span><span style="color: #0000ff">implements</span><span style="color: #000000"> Comparator{
 </span><span style="color: #0000ff">public</span><span style="color: #000000"> </span><span style="color: #0000ff">int</span><span style="color: #000000"> compare(Object o1,Object o2)
 {
 Integer str1</span><span style="color: #000000">=</span><span style="color: #000000">(Integer)o1;
 Integer str2</span><span style="color: #000000">=</span><span style="color: #000000">(Integer)o2;
 </span><span style="color: #0000ff">if</span><span style="color: #000000">(str1.compareTo(str2)</span><span style="color: #000000">></span><span style="color: #000000">0</span><span style="color: #000000">) 
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> </span><span style="color: #000000">-</span><span style="color: #000000">1</span><span style="color: #000000">;
 </span><span style="color: #0000ff">if</span><span style="color: #000000">(str1.compareTo(str2)</span><span style="color: #000000"><</span><span style="color: #000000">0</span><span style="color: #000000">) 
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> </span><span style="color: #000000">1</span><span style="color: #000000">;
 </span><span style="color: #0000ff">return</span><span style="color: #000000"> </span><span style="color: #000000">0</span><span style="color: #000000">;
 }
}</span>
</div>
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