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
  • 8883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。 ulxy 4] h  
插入排序: \_PD@A9  
&g\?znF]H  
package org.rut.util.algorithm.support; e?eX9yA7F  
j#JE4(&  
import org.rut.util.algorithm.SortUtil; \z)` pno  
/** ~h6aTN  
* @author treeroot lO dw H"  
* @since 2006-2-2 TH#5j.uUs  
* @version 1.0 %<Kw  
*/ D-4\AzIb  
public class InsertSort implements SortUtil.Sort{ e8$OV4X  
D}7G|gX1  
/* (non-Javadoc) + hKH\]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l?swW+ x\  
*/ O5?3 nYHa  
public void sort(int[] data) { !:w&eFC6  
int temp; PR*qyELu  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); _4MT,kN  
} :h60  
} Z*Jp?[##  
} ck\gazo~q  
Yeb-u+23  
} 0@*EwI  
;c~%:|  
冒泡排序: fN{JLp  
V( bU=;Qo  
package org.rut.util.algorithm.support; xyc`p[n &  
%)@3V8OI  
import org.rut.util.algorithm.SortUtil; ^=gzm s  
?q+^U>wy&  
/** i>n)T  
* @author treeroot n8vteGQ  
* @since 2006-2-2 p:q?8+W-r  
* @version 1.0 $Hbd:1%i {  
*/ VA0p1AD  
public class BubbleSort implements SortUtil.Sort{ [^GXHE=  
TBp$S=_**  
/* (non-Javadoc) rytaC(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Af{K#R8!  
*/ !$|h[ct  
public void sort(int[] data) { o 9]2  
int temp; &[iunJv:eq  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 8ECBi(  
if(data[j] SortUtil.swap(data,j,j-1); 8WvQ[cd  
} v05B7^1@_  
} 5/"&C-t  
} A~7q=-  
} 0-a[[hL?  
3a\.s9A "  
} z Qhc V  
h`:f  
选择排序: I&Y9  
li Hz5<|  
package org.rut.util.algorithm.support; p^ojhrr  
'}eA2Q>BV  
import org.rut.util.algorithm.SortUtil; S((\KL,  
U>jLh57  
/** Da8{==  
* @author treeroot ~*,e&I  
* @since 2006-2-2 1#2B1&  
* @version 1.0 M~k2Y$}R  
*/ 4ZN&Yf`  
public class SelectionSort implements SortUtil.Sort { H(k-jAO,  
bEc @"^)  
/* r%DaBx!x8  
* (non-Javadoc) cf ~TVa)M  
* =ijVT_|u0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )RE~=*?d  
*/ o(_~ st<  
public void sort(int[] data) { zP$Ef7bB  
int temp; ,Xt!dT-  
for (int i = 0; i < data.length; i++) { zBd)E21H  
int lowIndex = i; FY6!)/P0I7  
for (int j = data.length - 1; j > i; j--) { >s+TD4OfY  
if (data[j] < data[lowIndex]) { 1}"PLq(  
lowIndex = j; x%\m/_5w%  
} 9?~K"+-SI  
} s$ v<p(yl  
SortUtil.swap(data,i,lowIndex); "P_PqM  
} G)'(%rl  
} ;$= GrR  
2%F!aeX  
} N)H _4L  
ek3,ss3  
Shell排序: ^w*$qzESy  
s.oh6wz  
package org.rut.util.algorithm.support; '5BM*4,:O  
Oe^oigcM  
import org.rut.util.algorithm.SortUtil; Skn2-8;10  
hd E?%A  
/** :n t\uwh  
* @author treeroot g9$P J:  
* @since 2006-2-2 hy?e?^  
* @version 1.0 kbF+aS  
*/ NDv_@V(D  
public class ShellSort implements SortUtil.Sort{ )Ap0" ?q  
sF=8E8qa   
/* (non-Javadoc) GE0,d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t/HUG#W{  
*/ A_vf3 *q  
public void sort(int[] data) { NtnKS@Ht  
for(int i=data.length/2;i>2;i/=2){ IhYTK%^96  
for(int j=0;j insertSort(data,j,i); oA1d8*i^E  
} 6%&RDrn  
} 7Odw{pc  
insertSort(data,0,1); %ut7T!Jp  
} Q|`sYm'.  
}1/`<m  
/** ,9:0T LLR  
* @param data KASw3!.W  
* @param j PN&;3z Z  
* @param i jdF~0#vH  
*/ ~>( N<:N  
private void insertSort(int[] data, int start, int inc) { 8a SH0dX  
int temp; WO=,NQOw  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i[wEH1jR  
} ;.g <u  
} F;&a=R!.  
} H!+T2<F9R  
w[V71Iej  
} tbP ;iK'  
[qEd`8V (  
快速排序: h5.>};"@ '  
%+y92'GqG/  
package org.rut.util.algorithm.support; N))G/m3  
;| :^zo  
import org.rut.util.algorithm.SortUtil; ayb fBC  
w u  
/** u0vq`5L  
* @author treeroot MiX*PqNTM  
* @since 2006-2-2 ct3^V M&/  
* @version 1.0 =h{j F7  
*/ oNfNe^/T  
public class QuickSort implements SortUtil.Sort{ c G`R\ $  
du:%{4  
/* (non-Javadoc) GGY WvGE+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *A,h ^  
*/ nd 5w|83  
public void sort(int[] data) {  !AGjiP$  
quickSort(data,0,data.length-1); E2D}F@<]  
} h 'F\9t  
private void quickSort(int[] data,int i,int j){ ny. YkN2  
int pivotIndex=(i+j)/2; !VfP#B6.  
file://swap Cy~Pfty  
SortUtil.swap(data,pivotIndex,j); Yc*Ex-s  
3]X~bQAw  
int k=partition(data,i-1,j,data[j]); ?oc#$fcQ~  
SortUtil.swap(data,k,j); t*&O*T+fgy  
if((k-i)>1) quickSort(data,i,k-1); >**7ck  
if((j-k)>1) quickSort(data,k+1,j); A+N%A] 2  
|Ir&C[QS{y  
} $ 4& )  
/** U6pG  
* @param data )ww#dJn  
* @param i cTR@ :sm  
* @param j zoU-*Rs6  
* @return 4l6+8/Y  
*/ @AgV7#  
private int partition(int[] data, int l, int r,int pivot) { 7:h8b/9  
do{ QF7iU@%-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F^v <z)x  
SortUtil.swap(data,l,r); Zu$30&U  
} j;|rI`67~  
while(l SortUtil.swap(data,l,r); f~LM-7!zf}  
return l; 1P'R-I  
} OC[+t6  
~S],)E1w  
} k3 65.nc  
\*C}[D  
改进后的快速排序: $ +`   
Xiyh3/%yy  
package org.rut.util.algorithm.support; &4%j   
)i;o\UU  
import org.rut.util.algorithm.SortUtil; 5Z`9L| 3d  
.mse.$TK.^  
/** w<3g1n7R  
* @author treeroot vPV=K+1  
* @since 2006-2-2 %Tn0r|K  
* @version 1.0 ,pgpu !  
*/ nI-^   
public class ImprovedQuickSort implements SortUtil.Sort { ;JK !dzi}  
<oE(I)r4,  
private static int MAX_STACK_SIZE=4096; UY_'F5X  
private static int THRESHOLD=10; !1:364  
/* (non-Javadoc) ~vVsxC$.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R9/(z\'}  
*/ @"6dq;"  
public void sort(int[] data) { hY?x14m$3  
int[] stack=new int[MAX_STACK_SIZE]; o+H;ZGT5H  
 {ws:g![  
int top=-1; "v"w ER?  
int pivot; 483BrFV  
int pivotIndex,l,r; \9*,[mvC  
gUo L8~  
stack[++top]=0; j&G*$/lTO6  
stack[++top]=data.length-1; >l\?K8jL9  
J&xH "U  
while(top>0){ B/(]AWi+  
int j=stack[top--]; M``I5r*cg  
int i=stack[top--]; CywQ  
6NO_S  
pivotIndex=(i+j)/2; W6&s_ (  
pivot=data[pivotIndex]; DL^}?Ve  
6o_t;cpT  
SortUtil.swap(data,pivotIndex,j); TZT1nj"n  
+,xl_,Z6  
file://partition H$ !78/f  
l=i-1; vKzq7E  
r=j; Yxal%  
do{ *g}(qjl<  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); | %Dh  
SortUtil.swap(data,l,r); uqhNi!;  
} g|W|>`>  
while(l SortUtil.swap(data,l,r); wX3x.@!:  
SortUtil.swap(data,l,j); \X=?+| 9  
Z2yZz:.'  
if((l-i)>THRESHOLD){ "]%.%$  
stack[++top]=i; 9tW=9<E  
stack[++top]=l-1; Yy4? |wVl  
} F8\nAX  
if((j-l)>THRESHOLD){ /$7_*4e  
stack[++top]=l+1; nyZUf{:  
stack[++top]=j; [jD.l;jF  
} pZu2[  
pq"3)+3:  
} , qj  
file://new InsertSort().sort(data); !+?,y/*5(  
insertSort(data); ,FvBZ.4c3=  
} IH;+pN  
/** AXV+8$ :R  
* @param data : -@o3Syg  
*/ ^K4#_H#"  
private void insertSort(int[] data) { r@_`ob RW;  
int temp; aj1o   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); >Lh+(M;+F  
} F[Dhj,C"  
} k!gft'iU  
} KJ Gh)  
Z:l.{3J$  
} \}0J%F1  
L{K:XiPn  
归并排序: {2`:7U ~|  
1M|DaAI  
package org.rut.util.algorithm.support; 4s?x 8oAy  
:%M[|Fj  
import org.rut.util.algorithm.SortUtil; O.n pi: a  
F2 /-Wk@  
/** w l.#{@J]<  
* @author treeroot DwXzmp[qWH  
* @since 2006-2-2 (fc /"B-  
* @version 1.0 r-#23iT.~  
*/ f)xHSF"  
public class MergeSort implements SortUtil.Sort{ gDP\u<2!  
<$WRc\}&g  
/* (non-Javadoc) Cd:ofv/3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tBNkVh(c  
*/ `!?SA<a:  
public void sort(int[] data) { FcnSO0G%  
int[] temp=new int[data.length]; \;w+_<zE5{  
mergeSort(data,temp,0,data.length-1); #!wL0 p  
} ~ {sRK  
%m:T?![XO  
private void mergeSort(int[] data,int[] temp,int l,int r){ T&_!AjH  
int mid=(l+r)/2; C wKo'PAJ  
if(l==r) return ; zG_e=   
mergeSort(data,temp,l,mid); |fXwH>'sw  
mergeSort(data,temp,mid+1,r);  '&/"_  
for(int i=l;i<=r;i++){ (>THN*i  
temp=data; WH F>J  
} qRMH[F$`  
int i1=l; t'@1FA!)  
int i2=mid+1; {'W\~GnZ  
for(int cur=l;cur<=r;cur++){ *@J  
if(i1==mid+1) $gsn@P>"  
data[cur]=temp[i2++]; ,nqG* o  
else if(i2>r) RW!D! ~  
data[cur]=temp[i1++]; +kF$I7LN  
else if(temp[i1] data[cur]=temp[i1++];  =(kwMJ  
else (>*<<a22  
data[cur]=temp[i2++]; JO:40V?op  
} k^3|A3A  
} `3!ERQU  
9QaEUy*,  
} ,Mf@I5?  
[gZd$9a  
改进后的归并排序: D*d@<&Bl4<  
}-H<wQ&x  
package org.rut.util.algorithm.support; $QQv$  
bd[zdL#4K  
import org.rut.util.algorithm.SortUtil; k,>sBk 8  
A~ugx~S0  
/** .YquOCc(  
* @author treeroot \>NjeMuWU  
* @since 2006-2-2 j%R}  
* @version 1.0 )--v> *,V  
*/ L^:+8g  
public class ImprovedMergeSort implements SortUtil.Sort { 8fzmCRFH  
>Z k$q~'+  
private static final int THRESHOLD = 10; ,5" vzGLJ  
Y|FJ1x$r  
/* IS0RhtGy/  
* (non-Javadoc) ~c7}eTJd"  
* S_cba(0-|\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) MF/359r)Et  
*/ Ob+L|FbnN  
public void sort(int[] data) { EB'(%dH  
int[] temp=new int[data.length]; tp2CMJc{L  
mergeSort(data,temp,0,data.length-1); ;\=W=wL(  
} hv 18V>8  
f/G YDat  
private void mergeSort(int[] data, int[] temp, int l, int r) { "=I ioY  
int i, j, k; lJ!+n<K+  
int mid = (l + r) / 2; {uEu ^6a5  
if (l == r) J2 _DP  
return; T_CYSS|fX  
if ((mid - l) >= THRESHOLD) s$e0;C!D  
mergeSort(data, temp, l, mid); @)mH"u!(7  
else K1O0/2O  
insertSort(data, l, mid - l + 1); |,F/_    
if ((r - mid) > THRESHOLD) )P\Vd #  
mergeSort(data, temp, mid + 1, r); ,mH2S/<}S  
else ]Lq9Ompf(t  
insertSort(data, mid + 1, r - mid); cCN[c)[c|  
b]hP;QK`U$  
for (i = l; i <= mid; i++) { 2`,{IHu*!  
temp = data; 0IoS|P}6a  
} IH?.s k  
for (j = 1; j <= r - mid; j++) { F,^Q'$ !  
temp[r - j + 1] = data[j + mid]; HaI  
} /C29^P  
int a = temp[l]; &Mbpv)V8  
int b = temp[r]; #imMkvx?  
for (i = l, j = r, k = l; k <= r; k++) { ETe,RY  
if (a < b) { 8Z%C7 "4O  
data[k] = temp[i++]; RO,  
a = temp; I3o6ym-i  
} else { S/pTFlptCa  
data[k] = temp[j--]; ;3NA,JA#Y  
b = temp[j]; )|f!}( p  
} rk W*C'2fz  
} @~Z:W<X  
} %\-u&  
Kl~jcq&z  
/** O`- JKZc  
* @param data RS@*/.]o  
* @param l U]Q2EL\%  
* @param i {zhN>n_  
*/ i[)H!%RV*  
private void insertSort(int[] data, int start, int len) { iF2/:iP  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y8jk9Tv  
} - 8&M^-  
} t5 n$sF  
} ,6?L.L  
} +avu&2B  
rwr>43S5<3  
堆排序: _O ~DJ"  
'VCF{0{H~  
package org.rut.util.algorithm.support; s)W^P4<  
8E1swH5 z  
import org.rut.util.algorithm.SortUtil; 3=V79&  
NK'awv),pM  
/** iO4YZ!  
* @author treeroot t>><|~wp  
* @since 2006-2-2 tn201TDZ]=  
* @version 1.0 j.X3SQb4G  
*/ 1QXv}36#3n  
public class HeapSort implements SortUtil.Sort{ Ak[}s|,)  
=rcqYPul0  
/* (non-Javadoc) O#fGHI<43[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X2!vC!4P?L  
*/ 5F$ elW  
public void sort(int[] data) { \gy39xoW(  
MaxHeap h=new MaxHeap(); pA9^-:\*  
h.init(data); io^^f|  
for(int i=0;i h.remove(); EXUjdJs"  
System.arraycopy(h.queue,1,data,0,data.length); 5 rkIK  
} Kf D8S  
hkeOe  
private static class MaxHeap{ jI!}}K)d  
wN8-M e  
void init(int[] data){ Hj"`z6@7  
this.queue=new int[data.length+1]; _c?&G`  
for(int i=0;i queue[++size]=data; J< BBM.^]  
fixUp(size); b_@MoL@A!  
} dM8`!~#&PI  
} w$4fS  
}7E2,A9_"  
private int size=0; !},_,J~(|  
=dz  iR _  
private int[] queue; Jj}+tQ f  
w=I8f}(  
public int get() { Zo}wzY~x>I  
return queue[1]; {j.5!Nj]B  
} <[Ae 0UK  
 RSXYz8{  
public void remove() { yZ=wT,Y  
SortUtil.swap(queue,1,size--); `=8g%O|T  
fixDown(1); s,O:l0  
} Q1?  !,a  
file://fixdown Nw'i;}0v7r  
private void fixDown(int k) { e*.l6H/B  
int j; 6VpT*,2d~  
while ((j = k << 1) <= size) { ^6`"f  
if (j < size %26amp;%26amp; queue[j] j++; f}b= FV{  
if (queue[k]>queue[j]) file://不用交换 21x?TZa  
break; -Zd0[& ']  
SortUtil.swap(queue,j,k); 3 4CqLPg8  
k = j; rkh+$*t@i7  
} :hB/|H*=  
} ~#+ Hhc(  
private void fixUp(int k) { JSCe86a7<E  
while (k > 1) { hDI_qZ  
int j = k >> 1; M \rW  
if (queue[j]>queue[k]) Kf#9-.}?  
break; S*<+vIo  
SortUtil.swap(queue,j,k); 7<['4*u  
k = j; 1*<m,.$  
} jh \L)a*  
} W3K?K-  
$-'p6^5  
} tb#. Y  
5SKj% %B2,  
} :clMO|  
xG i,\K\:  
SortUtil: CL oc  
+@>K]hdr  
package org.rut.util.algorithm; 9T#d.c24  
o_hk!s^4m  
import org.rut.util.algorithm.support.BubbleSort; =NxT9$V  
import org.rut.util.algorithm.support.HeapSort; zsnXPRF  
import org.rut.util.algorithm.support.ImprovedMergeSort; WVlyR\.  
import org.rut.util.algorithm.support.ImprovedQuickSort; GF[onfQY7  
import org.rut.util.algorithm.support.InsertSort; $ \0)~cy  
import org.rut.util.algorithm.support.MergeSort; X@JrfvKv[d  
import org.rut.util.algorithm.support.QuickSort; Kk|uN#m  
import org.rut.util.algorithm.support.SelectionSort; 1 i # .h$  
import org.rut.util.algorithm.support.ShellSort; <hazrKUn  
+ >?"P^  
/** gwwYz]'d>r  
* @author treeroot mb_*FJB-_  
* @since 2006-2-2 $|-joY  
* @version 1.0 }cuU5WQ?%  
*/ `) s]T.-  
public class SortUtil { ]G m"U!h*  
public final static int INSERT = 1; LRl2@&z<  
public final static int BUBBLE = 2; @%mJw u  
public final static int SELECTION = 3; YD1 :m3l!  
public final static int SHELL = 4; X,dOF=OJL  
public final static int QUICK = 5; iX,| ;J|]  
public final static int IMPROVED_QUICK = 6; v.Wkz9 w}  
public final static int MERGE = 7; seO7/h_a  
public final static int IMPROVED_MERGE = 8; KLi&T mIB  
public final static int HEAP = 9; YJi C}.4Q  
]/>(C76  
public static void sort(int[] data) { i Qs7L y"  
sort(data, IMPROVED_QUICK); Kv3cKNvu~  
} @X\-c2=  
private static String[] name={ SJ4[n.tPI  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Q@zD'G >  
}; ha_&U@w  
. Z 93S|q  
private static Sort[] impl=new Sort[]{ NJ\ID=3l  
new InsertSort(), n@IpO i$Q  
new BubbleSort(), ^)|8N44O  
new SelectionSort(), `rEu8u  
new ShellSort(), c!n\?lB  
new QuickSort(), T 2Uu/^  
new ImprovedQuickSort(), 8bT]NvCA  
new MergeSort(), Hxe!68{aR  
new ImprovedMergeSort(), ; C/:$l  
new HeapSort() q5<'pi   
}; BVAxeXO  
(/6~*<ZGT  
public static String toString(int algorithm){ k$j4~C'$  
return name[algorithm-1]; Kxs_R#k  
} >6xZF'4  
rt-^?2c?  
public static void sort(int[] data, int algorithm) { yr=$a3web;  
impl[algorithm-1].sort(data); K)!yOa'fH  
} ?J[m)Uo/ K  
"_!D b&AH  
public static interface Sort { GZ xG!r -  
public void sort(int[] data); 3^NHV g  
} BC|=-^(  
[Aqy%mbG  
public static void swap(int[] data, int i, int j) { :Y/>] tS4  
int temp = data; VHwAO:+-  
data = data[j]; _`'VOY`o  
data[j] = temp; Wx~N1+  
} _J' _9M?>  
} Vu6$84>-,  
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
欢迎提供真实交流,考虑发帖者的感受
认证码:
验证问题:
10+5=?,请输入中文答案:十五