{"id":39863,"date":"2023-12-11T14:49:04","date_gmt":"2023-12-11T06:49:04","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=39863"},"modified":"2023-12-11T14:49:04","modified_gmt":"2023-12-11T06:49:04","slug":"java%e7%89%88%e5%a0%86%e6%8e%92%e5%ba%8f%e4%b8%8d%e7%a8%b3%e5%ae%9a","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/java%e7%89%88%e5%a0%86%e6%8e%92%e5%ba%8f%e4%b8%8d%e7%a8%b3%e5%ae%9a\/","title":{"rendered":"Java\u7248\u5806\u6392\u5e8f[\u4e0d\u7a33\u5b9a]"},"content":{"rendered":"

“`” \u5806\u4e00\u822c\u6307\u4e8c\u53c9\u5806\u3002<\/p>\n

\u590d\u6742\u5ea6\uff1aO(nlogn) – O(nlgn) – O(nlgn) – O(1)[\u5e73\u5747 – \u6700\u597d – \u6700\u574f – \u7a7a\u95f4\u590d\u6742\u5ea6]<\/p>\n

\u5927\u9876\u5806\u5b9e\u73b0\u4ece\u5c0f\u5230\u5927\u7684\u5347\u5e8f\u6392\u5217\uff0c\u5c0f\u9876\u5806\u4e00\u822c\u7528\u4e8e\u6784\u9020\u4f18\u5148\u961f\u5217<\/p>\n

<pre><code class=""language-java"" lang=""java""> public void heapSort(int[] a) {
\n if (null == a || a.length < 2) {
\n return;
\n }<\/p>\n

buildMaxHeap(a);<\/p>\n

for (int i = a.length – 1; i >= 0; i–) {
\n int temp = a[0];
\n a[0] = a[i];
\n a[i] = temp;<\/p>\n

adjustHeap(a, i, 0);
\n }
\n }<\/p>\n

\/\/ \u5efa\u5806
\n private void buildMaxHeap(int[] a) {
\n int mid = a.length \/ 2;
\n for (int i = mid; i >= 0; i–) {
\n adjustHeap(a, a.length, i);
\n }
\n }<\/p>\n

\/\/ \u9012\u5f52\u8c03\u6574\u5806
\n private void adjustHeap(int[] a, int size, int parent) {
\n int left = 2 * parent + 1;
\n int right = 2 * parent + 2;<\/p>\n

int largest = parent;
\n if (left < size && a[left] > a[parent]) {
\n largest = left;
\n }<\/p>\n

if (right < size && a[right] > a[largest]) {
\n largest = right;
\n }<\/p>\n

if (parent != largest) {
\n int temp = a[parent];
\n a[parent] = a[largest];
\n a[largest] = temp;
\n adjustHeap(a, size, largest);
\n }
\n }
\n<\/code><\/pre><\/p>\n

<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"

“`” \u5806\u4e00\u822c\u6307\u4e8c\u53c9\u5806\u3002 \u590d\u6742\u5ea6\uff1aO(nlogn) – O(nlgn) & […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-39863","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/39863","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=39863"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/39863\/revisions"}],"predecessor-version":[{"id":39864,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/39863\/revisions\/39864"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=39863"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=39863"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=39863"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}