社区应用 最新帖子 精华区 社区服务 会员列表 统计排行 社区论坛任务 迷你宠物
  • 7710阅读
  • 0回复

[JAVA]用Java实现的各种排序

级别: 终身会员
发帖
3743
铜板
8
人品值
493
贡献值
9
交易币
0
好评度
3746
信誉值
0
金币
0
所在楼道
用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 L5 veX}  
插入排序: ~TS y<t~%-  
8]M_z:F7F  
package org.rut.util.algorithm.support; \E% 'Y  
E ,|xJjh  
import org.rut.util.algorithm.SortUtil; )6|yb65ZUX  
/** 2JJ"O|Ibz  
* @author treeroot ~%SH3$  
* @since 2006-2-2 E#u l IgD  
* @version 1.0 }Ub6eXf(2  
*/ XgLL!5`  
public class InsertSort implements SortUtil.Sort{ gG-BVl"59  
1@QZnF5[  
/* (non-Javadoc) /+\uqF8F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dt`{!lts'  
*/ V&Xe!S  
public void sort(int[] data) { -3;*K4z$/  
int temp; V- Cv,8   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); d*~ ICir7  
} G-?d3 n  
} DjN|Wr)*  
} ;K!]4tfJ  
X_$Cb<e  
} +YqZ ((  
$CY't'6Hn  
冒泡排序: 6y6<JR-V2k  
~:3QBMk::  
package org.rut.util.algorithm.support; DsT>3  
34d3g  
import org.rut.util.algorithm.SortUtil; l,,> & F  
pBETA'fY  
/** }RwSp!}C  
* @author treeroot S%yd5<%_  
* @since 2006-2-2 a^=-Mp  
* @version 1.0 3WUTI(  
*/ ($}`R xj1@  
public class BubbleSort implements SortUtil.Sort{ Vzwc}k*Y  
TW[_Ko86  
/* (non-Javadoc) ?)`L$Vr=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5lm<%  
*/ d"6&AJ5a  
public void sort(int[] data) { ,:Lb7bFv>  
int temp; [L:o`j  
for(int i=0;i for(int j=data.length-1;j>i;j--){ |=$-Wu  
if(data[j] SortUtil.swap(data,j,j-1); +eX@U;J,g  
} 4)U.5FBk )  
} ?84 s4BpV1  
} .R9IL-3fO  
} [BT/~6ovrZ  
Qt/8r*Oe  
} Z| V`B `  
3 AsT  
选择排序: z&{5;A}Q@  
rxy&spX  
package org.rut.util.algorithm.support; U5He?  
Q)LM-ZJKQ  
import org.rut.util.algorithm.SortUtil; hED=u/ql[  
<j5NFJ9  
/** Oh'Y0_oB>  
* @author treeroot %7gkNa  
* @since 2006-2-2 ,{LG4qvP  
* @version 1.0 k&. Jk B"  
*/ US%^#D q  
public class SelectionSort implements SortUtil.Sort { _ h": >  
9Iz%ht  
/* hb^7oq"a  
* (non-Javadoc) t| 'N+-T3  
* `$B3X  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :@!ic<p  
*/ l?Fb ='#  
public void sort(int[] data) { @ )-$kk*  
int temp; y^}6!>Ou:  
for (int i = 0; i < data.length; i++) { 5<ux6,E1{  
int lowIndex = i; j'BMAn ?  
for (int j = data.length - 1; j > i; j--) { m q{];  
if (data[j] < data[lowIndex]) { rORZerM  
lowIndex = j; d\ ~QBr?  
} dVFf.  
} ODC8D>ZYl  
SortUtil.swap(data,i,lowIndex); tX"Th'Qi  
} yZ7,QsEsN  
} HfvTxaK  
Ie4hhW  
} HjGyj/78w  
K"[AxB'F  
Shell排序: 9> g,  
W"k8KODOY  
package org.rut.util.algorithm.support; Ce")[<:  
6'RrQc=q  
import org.rut.util.algorithm.SortUtil; gF5a5T,  
Tp9- niW  
/** |)K]U  
* @author treeroot h?FmBK'BAd  
* @since 2006-2-2 S-'fS2  
* @version 1.0 qq1-DG  
*/ mBG=jI "xh  
public class ShellSort implements SortUtil.Sort{ BYo/57&:  
T7d9ChU\#.  
/* (non-Javadoc) OLvcivf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NU*fg`w  
*/ SY^dWLf  
public void sort(int[] data) { rJ!{/3e  
for(int i=data.length/2;i>2;i/=2){ 3RR_fmMT)  
for(int j=0;j insertSort(data,j,i); 1[t=XDz/e  
} U=o"32n+  
} zKsz*xv6b  
insertSort(data,0,1); v !FMs<  
} {s_+?<l  
~2zM kVH  
/** 0sh/|`\  
* @param data zWb4([P;  
* @param j NSFs\a@1  
* @param i ~~6^Sh60g  
*/ .^m>AKC0cX  
private void insertSort(int[] data, int start, int inc) { ryc& n5  
int temp; "n=vN<8(o  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &09U@uc$  
} lZrVY+ D  
} YTjkPj:  
} ]wWPXx[>/  
WwUv5GZTW  
} S>0nx ^P  
AT\qiznvP  
快速排序: %Jf<l&K .`  
*k1<: @%e  
package org.rut.util.algorithm.support; W7\&~IWub  
Cb_oS4vM  
import org.rut.util.algorithm.SortUtil; )#}mH@  
KPpHwcYxT  
/** DtEwW1J  
* @author treeroot $L2%u8}8:  
* @since 2006-2-2 nxJee=qH  
* @version 1.0 \xUe/=  
*/ !!:LJ  
public class QuickSort implements SortUtil.Sort{ wHem5E  
vi)%$~  
/* (non-Javadoc) PccB]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3J=Y9 }  
*/ dna6QV>A  
public void sort(int[] data) { N|Sf=q?Ko  
quickSort(data,0,data.length-1); <soz#}e  
} _zu?.I0^  
private void quickSort(int[] data,int i,int j){ ~-83Q5/[  
int pivotIndex=(i+j)/2; _HA$ j2  
file://swap Jy aag-  
SortUtil.swap(data,pivotIndex,j); Jz!Z2c  
-.|4Y#b:&  
int k=partition(data,i-1,j,data[j]); \Fe_rh  
SortUtil.swap(data,k,j); :Yj) CGl$  
if((k-i)>1) quickSort(data,i,k-1); 3F#+~^2  
if((j-k)>1) quickSort(data,k+1,j); Z^9/v  
er.CDKD%L  
} :vL1}H<  
/** 1H,g=Y4f%  
* @param data x#N-&baS  
* @param i `:eViVl6e  
* @param j ,JEbd1Uf  
* @return 8V-\e?&^  
*/  A, PlvI  
private int partition(int[] data, int l, int r,int pivot) { RuG-{NF{F  
do{ +]@Az.E  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); lI/0:|l  
SortUtil.swap(data,l,r); S',9g4(5  
} K"V:<a  
while(l SortUtil.swap(data,l,r); k5&bq2)I  
return l; \Yoa:|%*y  
} $^tv45  
vwr74A.g0  
} CVi`bO4\  
Ce'pis   
改进后的快速排序: 2 /y}a#s  
!4rPv\   
package org.rut.util.algorithm.support; RAjkH`  
EHlytG}@  
import org.rut.util.algorithm.SortUtil; a? R[J==  
0~& "  
/** %o}(sShS  
* @author treeroot <g9"Cr`  
* @since 2006-2-2 8)VgS &B~  
* @version 1.0 c[ht`!P  
*/ 3g~^LZ66  
public class ImprovedQuickSort implements SortUtil.Sort { $iM=4 3W  
QI_59f>  
private static int MAX_STACK_SIZE=4096; ]/T -t1D  
private static int THRESHOLD=10; XW L^  
/* (non-Javadoc) &)pK%SAM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fB+b}aoV  
*/ jFerYv&K~  
public void sort(int[] data) { PVa o  
int[] stack=new int[MAX_STACK_SIZE]; F8+e,x  
^\:2}4Uj_  
int top=-1; jvzBh-!  
int pivot; * \HRw +cL  
int pivotIndex,l,r; o;[bJ Z\^x  
[k]|Qi nk  
stack[++top]=0; PzY)"]g  
stack[++top]=data.length-1; T!Sj<,r+j  
eu'1H@vX(  
while(top>0){  .~}z4r  
int j=stack[top--]; j|e[s ? d  
int i=stack[top--]; QT#6'>&7-b  
nB5Am^bP  
pivotIndex=(i+j)/2; wE).>  
pivot=data[pivotIndex]; x "(9II*  
T ^JuZG  
SortUtil.swap(data,pivotIndex,j); ^t[HoFRa  
+dkS/b  
file://partition ?G? gy2  
l=i-1; l oqvi  
r=j; Gowp <9 F  
do{ PG,U6c #  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); D{'#er  
SortUtil.swap(data,l,r); Xev54!619  
} 4%*hGh=  
while(l SortUtil.swap(data,l,r); W>spz~w%j  
SortUtil.swap(data,l,j); eFTX6XB:i  
&14W vAU  
if((l-i)>THRESHOLD){ v&3O&y/1v  
stack[++top]=i; 8 3.E0@$  
stack[++top]=l-1; oJ78jGTnb  
} :k46S<RE  
if((j-l)>THRESHOLD){ %d: A`7x  
stack[++top]=l+1; ' eO/PnYW  
stack[++top]=j; CsSp=(  
} sa1mC  
?kt=z4h9(  
} jnoL2JR[=-  
file://new InsertSort().sort(data); bO49GEUT _  
insertSort(data); 0zqj0   
} PdY>#Cyh  
/** ^ua12f  
* @param data +zWrLf_Rc  
*/ ;^l_i4A  
private void insertSort(int[] data) { =:h3w#_c  
int temp; R V!o4"\]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9u wL{P&  
} U |F>W~%  
} [V@yRWI  
} "7?js $  
1a9w(X  
} MB:n~>ga  
#Y[H8TW  
归并排序: J"[3~&em  
h'^FrWaU/  
package org.rut.util.algorithm.support; ZHy><=2  
?gV'(3 !  
import org.rut.util.algorithm.SortUtil; !=[uT+v  
Z|^MGyn  
/** CKTrZxR"  
* @author treeroot %OI4a5V*l  
* @since 2006-2-2 BV9*s  
* @version 1.0 Xa`(;CLW?  
*/ xaXV ^ZM3  
public class MergeSort implements SortUtil.Sort{ MWq$AK]  
0->/`/xm  
/* (non-Javadoc) D6!tVdnVe  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _1JmjIH)M  
*/ PI7IBI  
public void sort(int[] data) { 6tOi^+qN  
int[] temp=new int[data.length]; 5_G'68;OV  
mergeSort(data,temp,0,data.length-1); J0Four#MD  
} ,0T)Oc|HL/  
- 8syjKTg  
private void mergeSort(int[] data,int[] temp,int l,int r){ xQz#i-v  
int mid=(l+r)/2; ^now}u9S6  
if(l==r) return ; 9YSVK\2$  
mergeSort(data,temp,l,mid); ZBj6KqfST%  
mergeSort(data,temp,mid+1,r); Js}tZ\+P75  
for(int i=l;i<=r;i++){ 0|2%#  E  
temp=data; + x_ wYv  
} ?;8M^a/  
int i1=l; \ j]~>9  
int i2=mid+1; v+tO$QZ`  
for(int cur=l;cur<=r;cur++){ ?"@ET9  
if(i1==mid+1) }%{=].)L  
data[cur]=temp[i2++]; (G5T%[/U  
else if(i2>r) K<,Y^3]6?  
data[cur]=temp[i1++]; N&B>#:  
else if(temp[i1] data[cur]=temp[i1++]; dy_.(r5[L]  
else DyI2Ye  
data[cur]=temp[i2++]; $DV-Ieb  
} fH!=Zb_{8  
} H!JWc'(<$  
EHWv3sR-  
} DN|vz}s  
-I vL+}K  
改进后的归并排序: $i&\\QNn  
|!re8|JV_  
package org.rut.util.algorithm.support; \|!gPc%s  
u '@Ely  
import org.rut.util.algorithm.SortUtil; 9}whWh  
&5/JfNe3  
/** &^ceOV0+  
* @author treeroot =[(%n94  
* @since 2006-2-2 m9g^ -X  
* @version 1.0 =n }Yqny  
*/ W}k[slqZA  
public class ImprovedMergeSort implements SortUtil.Sort { ~\bHfiIDy  
L`[F~$|  
private static final int THRESHOLD = 10; *'^:S#=  
%EB;1  
/* 0HPO" x3-O  
* (non-Javadoc) Q}z{AZ  
* ~mcZUiP9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H8"tbU  
*/ o@@w^##  
public void sort(int[] data) { 3qcpf:  
int[] temp=new int[data.length]; 5xv,!/@  
mergeSort(data,temp,0,data.length-1); Fs9W>*(  
} 8AX3C s_G  
6+#,=!hF{  
private void mergeSort(int[] data, int[] temp, int l, int r) { #x|VfN5f  
int i, j, k; >;.*  
int mid = (l + r) / 2; Gavkil  
if (l == r) .ftUhg  
return; J<-Fua^  
if ((mid - l) >= THRESHOLD) WV~SL/k|   
mergeSort(data, temp, l, mid); ~6fRS2u  
else cB36p&%  
insertSort(data, l, mid - l + 1); .6I%64m  
if ((r - mid) > THRESHOLD) G%`cJdM  
mergeSort(data, temp, mid + 1, r); |Qq+8IeYG  
else ]Qy,#p'~&H  
insertSort(data, mid + 1, r - mid); q\G{]dz?R  
j>g9\i0O1  
for (i = l; i <= mid; i++) { +9}' s{  
temp = data; 0, "ZV}  
} wJr/FE 7c  
for (j = 1; j <= r - mid; j++) { 2?pM5n  
temp[r - j + 1] = data[j + mid]; R''Sfz>8  
} ;>'SV~F  
int a = temp[l]; (aBP|rxg  
int b = temp[r]; mlmnkgl ]  
for (i = l, j = r, k = l; k <= r; k++) { X{|k<^:  
if (a < b) { SFOQM*H  
data[k] = temp[i++]; 'U*udkn 2]  
a = temp; ?xf~!D  
} else { aH9L|BN*  
data[k] = temp[j--]; )rS^F<C  
b = temp[j]; 2PI #ie4  
} b__n~\q_  
} PKATw>zg<  
} ~CJYQFt  
cxk=| ?l  
/** "vvFq ,c  
* @param data s~#?9vW  
* @param l > d)|r  
* @param i "9.6\Y\*  
*/ ~v,!n/('  
private void insertSort(int[] data, int start, int len) { hXBqz9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Zm5nLxM  
} Q,O]x#  
} <6gU2@1  
} M`q#,Y?3^I  
} :hi$}xHa  
UfO'.8*v  
堆排序: &8.z$}m  
l!Nvn$h m  
package org.rut.util.algorithm.support; Psg +\14  
N/`g?B[  
import org.rut.util.algorithm.SortUtil; o(BYT9|.kw  
p$&_fzb  
/** ~91uk3ST?  
* @author treeroot ;9 R40qi  
* @since 2006-2-2 Rf&^th}TH  
* @version 1.0 HL|0d }  
*/ >hh"IfIZ4  
public class HeapSort implements SortUtil.Sort{ mT}Aje-L  
v UJ sFR  
/* (non-Javadoc) 5 ,g$|,Shv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) a'c9XG}  
*/ \"{/yjO|4  
public void sort(int[] data) { aj% `x4e A  
MaxHeap h=new MaxHeap(); '[0 3L9  
h.init(data); %Tk}sfx  
for(int i=0;i h.remove(); I*%&)Hj~  
System.arraycopy(h.queue,1,data,0,data.length); ok8JnQC  
} (}~ 1{C@  
P2s^=J0@  
private static class MaxHeap{ &fh.w]\  
K1CMLX]m  
void init(int[] data){ sz){uOI  
this.queue=new int[data.length+1]; \=TWYj_Ah  
for(int i=0;i queue[++size]=data; )GQ D*b  
fixUp(size); ntd ":BKi  
} Nj"_sA p  
} FC|y'j 0  
!NQf< ch  
private int size=0; GIJV;7~  
C%qtCk_cN  
private int[] queue; `V$cz88b  
ZhxfI?i)l  
public int get() { =rE `ib  
return queue[1]; 0`zm>fh}  
} jCdZ}M($  
9QO!vx  
public void remove() { a?f5(qW3  
SortUtil.swap(queue,1,size--); mk$Yoz  
fixDown(1); X*D5y8<  
} Z.Lx^h+U  
file://fixdown WcQZFtW  
private void fixDown(int k) { #<^/yoH7C6  
int j; #0#V$AA>  
while ((j = k << 1) <= size) { .oB'ttF1  
if (j < size %26amp;%26amp; queue[j] j++; y$"~^8"z  
if (queue[k]>queue[j]) file://不用交换 C:TuC5Sr  
break; l93Q"*_  
SortUtil.swap(queue,j,k); .XZ 71E  
k = j; 9e|{z9z[l  
} 7zi^{]  
} ~j\;e  
private void fixUp(int k) {  yS(=eB_  
while (k > 1) { M<hs_8_*  
int j = k >> 1; bDcWb2 lqs  
if (queue[j]>queue[k]) NiU tH  
break; /61ag9pN  
SortUtil.swap(queue,j,k); gPn%`_d5  
k = j; 4B%5-VQ  
} 1L(Nfkh  
} bTI&#Hu  
zYNM<W;  
} ` Mv5!H5l  
-+Awm{X_@  
} +$an*k9  
5Od(J5`  
SortUtil: '8((;N|I^  
;Ln7_  
package org.rut.util.algorithm; 8*Nt&`@  
gs<qi'B  
import org.rut.util.algorithm.support.BubbleSort; #z1ch,*3;  
import org.rut.util.algorithm.support.HeapSort; jn#N7%{Mk  
import org.rut.util.algorithm.support.ImprovedMergeSort;  G> 5=`  
import org.rut.util.algorithm.support.ImprovedQuickSort; )PanJHtU  
import org.rut.util.algorithm.support.InsertSort; 8EVF<@{]  
import org.rut.util.algorithm.support.MergeSort; }(hYG"5  
import org.rut.util.algorithm.support.QuickSort; [0%Gu 5_\  
import org.rut.util.algorithm.support.SelectionSort; D[FfJcV'$  
import org.rut.util.algorithm.support.ShellSort; 5O4&BxQ~}  
-;DE&~p  
/** "|~B};|MFF  
* @author treeroot EZa{C}NQ$2  
* @since 2006-2-2 QL|:(QM  
* @version 1.0 E|6Z]6[  
*/ a#~Z5>{  
public class SortUtil { n?KS]ar>  
public final static int INSERT = 1; _tR.RAaa"  
public final static int BUBBLE = 2; 1\7"I-  
public final static int SELECTION = 3; \!4ghev3  
public final static int SHELL = 4; ?yd(er<_f  
public final static int QUICK = 5; 9_CA5?y$:  
public final static int IMPROVED_QUICK = 6; 4<K ,w{I  
public final static int MERGE = 7; LMhY"/hAXa  
public final static int IMPROVED_MERGE = 8; j#.-MfB  
public final static int HEAP = 9; D;T r  
FZ'>LZ  
public static void sort(int[] data) { PY3Vu]zD  
sort(data, IMPROVED_QUICK); \c@qtIc  
} %<#$:Qb.  
private static String[] name={ s D8xH  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" sou$qKoG01  
}; \?`d=n=  
,BN}H-W\2  
private static Sort[] impl=new Sort[]{ 9"u @<]  
new InsertSort(), C`K9WJOD  
new BubbleSort(), qjRiTIp9q  
new SelectionSort(), :4L5@>b-  
new ShellSort(), ztxQv5=:,  
new QuickSort(), =B 4gEWR  
new ImprovedQuickSort(), VAB&&AL  
new MergeSort(), h"Yqm"U/  
new ImprovedMergeSort(), 0m| Gp  
new HeapSort() xuH<=-O>ki  
}; gQcr'[[a  
Qak@~b  
public static String toString(int algorithm){ F|3FvxA  
return name[algorithm-1]; z$im4'\c  
} A?Hjz%EcW  
<)*g7  
public static void sort(int[] data, int algorithm) { Q`wA"mw6k  
impl[algorithm-1].sort(data); C?c-V,  
} p?gLW/n  
MBTt'6M  
public static interface Sort { SO jDtZ  
public void sort(int[] data); dvdBRrf  
} DEeL 48{R  
xo"4mbTV  
public static void swap(int[] data, int i, int j) { =)UiI3xHk  
int temp = data; Pc-8L]2oaF  
data = data[j]; qt&"cw  
data[j] = temp; @p'v.;~#  
} }4ghT(C}$  
} rp[oH=&  
评价一下你浏览此帖子的感受

精彩

感动

搞笑

开心

愤怒

无聊

灌水
描述
快速回复

您目前还是游客,请 登录注册
批量上传需要先选择文件,再选择上传
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八