“`” \u539f\u7406\uff1a\u5206\u914d\u52a0\u6536\u96c6<\/p>\n
\u590d\u6742\u5ea6\uff1a O(d(n+r)) r\u4e3a\u57fa\u6570d\u4e3a\u4f4d\u6570 \u7a7a\u95f4\u590d\u6742\u5ea6O(n+r)<\/p>\n
<pre><code class=""language-java"" lang=""java"">\/\/ \u57fa\u6570\u6392\u5e8f
\n public void radixSort(int[] a, int begin, int end, int digit) {
\n \/\/ \u57fa\u6570
\n final int radix = 10;
\n \/\/ \u6876\u4e2d\u7684\u6570\u636e\u7edf\u8ba1
\n int[] count = new int[radix];
\n int[] bucket = new int[end-begin+1];<\/p>\n
\/\/ \u6309\u7167\u4ece\u4f4e\u4f4d\u5230\u9ad8\u4f4d\u7684\u987a\u5e8f\u6267\u884c\u6392\u5e8f\u8fc7\u7a0b
\n for (int i = 1; i <= digit; i++) {
\n \/\/ \u6e05\u7a7a\u6876\u4e2d\u7684\u6570\u636e\u7edf\u8ba1
\n for (int j = 0; j < radix; j++) {
\n count[j] = 0;
\n }<\/p>\n
\/\/ \u7edf\u8ba1\u5404\u4e2a\u6876\u5c06\u8981\u88c5\u5165\u7684\u6570\u636e\u4e2a\u6570
\n for (int j = begin; j <= end; j++) {
\n int index = getDigit(a[j], i);
\n count[index]++;
\n }<\/p>\n
\/\/ count[i]\u8868\u793a\u7b2ci\u4e2a\u6876\u7684\u53f3\u8fb9\u754c\u7d22\u5f15
\n for (int j = 1; j < radix; j++) {
\n count[j] = count[j] + count[j – 1];
\n }<\/p>\n
\/\/ \u5c06\u6570\u636e\u4f9d\u6b21\u88c5\u5165\u6876\u4e2d
\n \/\/ \u8fd9\u91cc\u8981\u4ece\u53f3\u5411\u5de6\u626b\u63cf\uff0c\u4fdd\u8bc1\u6392\u5e8f\u7a33\u5b9a\u6027
\n for (int j = end; j >= begin; j–) {
\n int index = getDigit(a[j], i);
\n bucket[count[index] – 1] = a[j];
\n count[index]–;
\n }<\/p>\n
\/\/ \u53d6\u51fa\uff0c\u6b64\u65f6\u5df2\u662f\u5bf9\u5e94\u5f53\u524d\u4f4d\u6570\u6709\u5e8f\u7684\u8868
\n for (int j = 0; j < bucket.length; j++) {
\n a[j] = bucket[j];
\n }
\n }
\n }<\/p>\n
\/\/ \u83b7\u53d6x\u7684\u7b2cd\u4f4d\u7684\u6570\u5b57\uff0c\u5176\u4e2d\u6700\u4f4e\u4f4dd=1
\n private int getDigit(int x, int d) {
\n String div = ""1"";
\n while (d >= 2) {
\n div += ""0"";
\n d–;
\n }
\n return x\/Integer.parseInt(div) % 10;
\n }
\n}
\n<\/code><\/pre><\/p>\n
<pre><code> "“`
\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"
“`” \u539f\u7406\uff1a\u5206\u914d\u52a0\u6536\u96c6 \u590d\u6742\u5ea6\uff1a O(d(n+r)) r\u4e3a\u57fa\u6570d\u4e3a\u4f4d\u6570 \u7a7a\u95f4\u590d\u6742\u5ea6O […]<\/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-39865","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/39865","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=39865"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/39865\/revisions"}],"predecessor-version":[{"id":39866,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/39865\/revisions\/39866"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=39865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=39865"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=39865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}