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
  • 5106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。 0i1?S6]d-  
插入排序: :\HN?_?{4  
fJ+E46|4  
package org.rut.util.algorithm.support; &cv /q$W4  
s_e#y{ {C2  
import org.rut.util.algorithm.SortUtil; X]qp~:4G  
/** kO\&mL& qD  
* @author treeroot ZI:d&~1i1  
* @since 2006-2-2 %L,,  
* @version 1.0 ,Y/>*,J  
*/ jC }u>AB  
public class InsertSort implements SortUtil.Sort{ iegPEb  
^ZZ@!Udy  
/* (non-Javadoc) C3`.-/{D"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  K`mxb}  
*/ !QzMeN;D  
public void sort(int[] data) { '{_tDboY  
int temp; AT8,9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); peP:5WB  
} :zk.^q  
} \V7x3*nA  
} er}'}n`@q  
P_}_D{G  
} 6Yi,%#  
l~ >rpG  
冒泡排序: gA8 u E  
X=7vUb,\gB  
package org.rut.util.algorithm.support; fwGz00C/U  
Czl 8Q oH  
import org.rut.util.algorithm.SortUtil; "+OMo-<K7  
d=Ihl30m  
/** X!'Xx8  
* @author treeroot (Y?yGq/  
* @since 2006-2-2 ZX RN?b  
* @version 1.0 S%%qn  
*/ Vf2! 0  
public class BubbleSort implements SortUtil.Sort{ 8XXTN@&,  
iDe0 5f1R  
/* (non-Javadoc) A}+r;Y8[h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O&1p2!Bk4  
*/ A=>6$L];'  
public void sort(int[] data) { Y+PxV*"a  
int temp; ?q8g<-?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ R(#;yn  
if(data[j] SortUtil.swap(data,j,j-1); KuAGy*:4T  
} +mel0ZStS  
} R}YryzV5  
} kxiyF$ 9  
} +Gs;3jC^  
m^&mCo,  
} '<j p.sZQ  
? 9M+fi  
选择排序: YmF(o  
2QD B'xs3  
package org.rut.util.algorithm.support; Tl{r D(D  
)4O`%9=M&  
import org.rut.util.algorithm.SortUtil; +2enz!z#k  
r/w@Dh]{_  
/** [<yUq zm  
* @author treeroot {;gWn' aq  
* @since 2006-2-2 @MVZy  
* @version 1.0 lY8Qy2k|  
*/    r3K:  
public class SelectionSort implements SortUtil.Sort { w'j]Y%  
 [?(W7  
/* ziip*<a !_  
* (non-Javadoc) AZP>\Dq  
* gI$`d?[0{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) z?g4^0e  
*/ ]nGA1S{  
public void sort(int[] data) { "s^@PzQpN  
int temp; DxG'/5jQ[  
for (int i = 0; i < data.length; i++) { Y\F H4}\S  
int lowIndex = i; U/l ra&P  
for (int j = data.length - 1; j > i; j--) { Y'":OW#oN  
if (data[j] < data[lowIndex]) { v2<gkCK^  
lowIndex = j; IWd*"\L  
} %&S]cEw  
} M0\[hps~X  
SortUtil.swap(data,i,lowIndex); S5p\J!k\B  
} ^@cX0_  
} 9%veUvY  
N>iCb:_ T;  
} D($UbT-v  
6 6;O3g'  
Shell排序: R9HS%O6b6  
e/%Y ruzS  
package org.rut.util.algorithm.support; rx) Q]  
rkXSy g b  
import org.rut.util.algorithm.SortUtil;  X0L{#U  
O  
/** gpl!Iz~5  
* @author treeroot cSWVHr  
* @since 2006-2-2 G->@   
* @version 1.0 $fG/gYvI\  
*/ Y)5}bmL  
public class ShellSort implements SortUtil.Sort{ uv d>  
(S{c*"}2  
/* (non-Javadoc) <\ c8q3N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \Fjq|3`<l  
*/ NV~i4R*#  
public void sort(int[] data) { M#,+p8  
for(int i=data.length/2;i>2;i/=2){ msJn;(Pn  
for(int j=0;j insertSort(data,j,i); i oQlC4Y  
} !I$RE?7eY  
} |EA1+I.&x  
insertSort(data,0,1); %ua5T9H Z  
} $^GnY7$!>  
xrd ^vE  
/** "aH]4DO  
* @param data p8bTR!rvz  
* @param j *Ux"3IXO  
* @param i A>S2BL#=  
*/ l0)6[yXK  
private void insertSort(int[] data, int start, int inc) { fQ) ;+  
int temp; wEqCuhZ  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); )]Rr:i9n  
} *GnO&&m'B  
} >@W#@W*I@  
} XS@6jbLE  
A}O9e  
} D7wWk ,B  
#{PNdINoU  
快速排序: cFo-NI2  
Nzt1JHRS  
package org.rut.util.algorithm.support; SesO$=y  
J>&GP#7}  
import org.rut.util.algorithm.SortUtil; w Nnb@  
s)=7tHoqB)  
/** 6jA Q  
* @author treeroot 4Yk (ldR~  
* @since 2006-2-2 j'cS_R  
* @version 1.0 1NJ|%+I  
*/ ~d]7 Cl  
public class QuickSort implements SortUtil.Sort{ jeNEC&J  
Ac%K+Pgk.  
/* (non-Javadoc) vN+!l3O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  }2"k:-g  
*/ 7 |A,GH  
public void sort(int[] data) { y+<HS]vyV  
quickSort(data,0,data.length-1); (d\bSo$]  
} Vh&KfYY  
private void quickSort(int[] data,int i,int j){ |M&/( 0  
int pivotIndex=(i+j)/2; A5\S0l$Q  
file://swap igCtq!.a  
SortUtil.swap(data,pivotIndex,j); %kT:"j(xW  
pDT6>2t  
int k=partition(data,i-1,j,data[j]); |\ L2q/u  
SortUtil.swap(data,k,j); j=LF1dG"  
if((k-i)>1) quickSort(data,i,k-1); )i>KgX  
if((j-k)>1) quickSort(data,k+1,j); BGS6uV4^>  
~b/>TKn+  
} ;2~Q97c0  
/** ;DpK* A  
* @param data pe-d7Ou P  
* @param i  -W ,b*U  
* @param j Dc2eY.  
* @return 7085&\9  
*/ J %t1T]y~  
private int partition(int[] data, int l, int r,int pivot) { jrR~V* :k  
do{ ycN_<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); N4 pA3~P  
SortUtil.swap(data,l,r); a;sZNUSn  
} ?u|g2!{_  
while(l SortUtil.swap(data,l,r); >F v8 -  
return l; AseY.0  
} {cFei3'q  
dLq!t@?iu>  
} <Lt$qV-#  
"lt[)3*  
改进后的快速排序: PE>_;k-@k  
5s9~rm  
package org.rut.util.algorithm.support; qZ.\GHS  
]n_A~Y r  
import org.rut.util.algorithm.SortUtil; n1|%xQBU@  
kW9STN  
/** Nx"?'-3Hm  
* @author treeroot RPu-E9g@  
* @since 2006-2-2 `:&{/|uP7  
* @version 1.0 -p }]r  
*/ '1+ Bgf  
public class ImprovedQuickSort implements SortUtil.Sort { ,&$Y2+  
/(w5S',EL  
private static int MAX_STACK_SIZE=4096; e0P1FD<@  
private static int THRESHOLD=10; 0NGokaD)H  
/* (non-Javadoc) C/JFg-r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yp8$0KK  
*/ IM+PjYJ  
public void sort(int[] data) { ur|2FS7  
int[] stack=new int[MAX_STACK_SIZE]; hI yfF  
%k~=iDk@  
int top=-1; _cB~?c  
int pivot; /[p4. FL  
int pivotIndex,l,r; Ic*Q(X  
u|C9[(  
stack[++top]=0; 0IZV4{  
stack[++top]=data.length-1; sgX~4W"J  
K(?7E6\vO  
while(top>0){ TL5bX+  
int j=stack[top--]; #{(rOb6H)  
int i=stack[top--]; >_o_&;=`v  
Kt-@a%O0  
pivotIndex=(i+j)/2; qr*/}F6  
pivot=data[pivotIndex]; '#fj)  
AG?oA328  
SortUtil.swap(data,pivotIndex,j); 31}6dg8?n  
?s//a_nL*  
file://partition )`)cB)s  
l=i-1; Ez )Go6Q  
r=j; vc<8ApK3V  
do{ @RC_Ie=#)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); A U](pXK;  
SortUtil.swap(data,l,r); LakP'P6`E  
} @RjLDj+)S  
while(l SortUtil.swap(data,l,r); v{9eEk1  
SortUtil.swap(data,l,j); })":F  
^6=nL<L  
if((l-i)>THRESHOLD){ SFjN 5u  
stack[++top]=i; h(9K7  
stack[++top]=l-1; ?^hC|IR$  
} pJmn;XbME  
if((j-l)>THRESHOLD){ \%)p7PNY  
stack[++top]=l+1; ojaZC,}  
stack[++top]=j; {0|^F!1z  
} w/&#UsEIr  
~HELMS~-  
} m4EkL  
file://new InsertSort().sort(data); Dbgw )n*2  
insertSort(data); B>R6j}rh'k  
} MKbW^:  
/** \oi=fu=}*  
* @param data *+ 7#z;  
*/ <X: 9y  
private void insertSort(int[] data) { 7L!k9"X`0F  
int temp; iZ{D_uxq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZjzQv)gZ  
} milU,!7J  
} z:w7e0  
} }} IvZG&  
Nz m 7E]  
} mGIS[_dcs  
PKP( :3|  
归并排序: xd* kNY  
X0m\   
package org.rut.util.algorithm.support; EprgLZ1B  
$+tkBM  
import org.rut.util.algorithm.SortUtil; H)5]K9D  
)T^hyi$  
/** P63f0 F-G  
* @author treeroot O@l`D`  
* @since 2006-2-2 *_ "j"{  
* @version 1.0 pvX\k X3}  
*/ $zJ.4NA  
public class MergeSort implements SortUtil.Sort{ )msqt!Ev  
:5ji.g* 0  
/* (non-Javadoc) Q@2Smtu~c  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x{=ty*E  
*/ us/x.qPy2  
public void sort(int[] data) { n04Zji(F@  
int[] temp=new int[data.length]; $ED<:[3N  
mergeSort(data,temp,0,data.length-1);  3N;X|pa  
} MQhL>oQ  
@6\8&(|  
private void mergeSort(int[] data,int[] temp,int l,int r){ pBHr{/\5  
int mid=(l+r)/2; u|+O%s TQ  
if(l==r) return ; Z yIn>]{  
mergeSort(data,temp,l,mid); ]]Wa.P~]O  
mergeSort(data,temp,mid+1,r); I(C_}I>Wb  
for(int i=l;i<=r;i++){ LNe- ]3wB  
temp=data; !dZC-U~  
} mp}ZHufG  
int i1=l; "BK&C6]  
int i2=mid+1; t/HE@xPxI5  
for(int cur=l;cur<=r;cur++){ vrH/Z.WD  
if(i1==mid+1) :Vv=p*~  
data[cur]=temp[i2++]; <CeDIX t  
else if(i2>r) aaLT%  
data[cur]=temp[i1++]; hEDj"`Px  
else if(temp[i1] data[cur]=temp[i1++]; 7Ij'!@no  
else pZXva9bE  
data[cur]=temp[i2++]; Ur_~yX]Mo  
} m+CvU?)gJ  
} F$d`Umqs;P  
/']Gnt G.  
} x6m21DWw  
kYx|`-PA<r  
改进后的归并排序: 0nBAO  
8USF;k  
package org.rut.util.algorithm.support; euQ d  
Fe8xOo6  
import org.rut.util.algorithm.SortUtil; 3rs=EMz:w  
!uHX2B+~  
/** &Jq?tnNd  
* @author treeroot L~~;i'J  
* @since 2006-2-2 7GpSWM6  
* @version 1.0 8hdd1lVKO8  
*/ Wa ,  #  
public class ImprovedMergeSort implements SortUtil.Sort { :h"Y>1P  
`*N2x\+X  
private static final int THRESHOLD = 10; jytfGE:  
ZfS-W&6Z  
/* {,,w5/k^  
* (non-Javadoc) 6:@tHUm  
* f~9ADb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @va6,^)  
*/ 7|*|xLrVY  
public void sort(int[] data) { (C1]R41'  
int[] temp=new int[data.length]; D[ny%9 :  
mergeSort(data,temp,0,data.length-1); {l! [{  
} H>k=V<  
7h,SX]4Q  
private void mergeSort(int[] data, int[] temp, int l, int r) { %*zgN[/w  
int i, j, k; 't2"CPZ  
int mid = (l + r) / 2; klv ]+F&[  
if (l == r) !'MZeiLP  
return; Vc}m_ T]O  
if ((mid - l) >= THRESHOLD) CKyX  Z  
mergeSort(data, temp, l, mid); )~s(7 4`}  
else os"o0?  
insertSort(data, l, mid - l + 1); Busxg?=  
if ((r - mid) > THRESHOLD) }m(u o T~  
mergeSort(data, temp, mid + 1, r); &*r YY\I  
else &?v^xAr?B  
insertSort(data, mid + 1, r - mid); +!CG'qyN>  
c[f  
for (i = l; i <= mid; i++) { ^|(F|Z  
temp = data; XzkC ]e'  
} UJ2Tj+  
for (j = 1; j <= r - mid; j++) { g#W)EXUR  
temp[r - j + 1] = data[j + mid]; v~9PS2  
} >}Za)  
int a = temp[l]; O$<kWSC  
int b = temp[r]; BNnGtVAbZ  
for (i = l, j = r, k = l; k <= r; k++) { R=xT\i{4h  
if (a < b) { S!0<aFh  
data[k] = temp[i++]; ==~X8k|{E  
a = temp; 9H`Q |7g(5  
} else { {b}Ri&oEOH  
data[k] = temp[j--]; ^F/N-!}q  
b = temp[j]; +<(N]w*  
} D`V03}\-  
} !D!Q]M5oU  
} eE '\h  
+m^ gj:yL  
/** QQj)"XJ29  
* @param data Y7{IF X  
* @param l K]1A,Q  
* @param i mY+J ju1  
*/ P?\IlziCB  
private void insertSort(int[] data, int start, int len) { q{nNWvL  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /q0[T{Wz$  
} M|w;7P}  
} P|Dw +lQj  
} (3C::B=  
} |L 11?{ K  
nRzD[ 3I  
堆排序: hQv~C4Wfrf  
f![?og)I%  
package org.rut.util.algorithm.support; sB"Oi|#lk  
7jQOwzj  
import org.rut.util.algorithm.SortUtil; 4$oNh)+/h  
40w,:$  
/** N7v7b<6  
* @author treeroot Tu"bbc  
* @since 2006-2-2 bH%k)  
* @version 1.0 b3N1SC:Wn  
*/ SxI='z_S.f  
public class HeapSort implements SortUtil.Sort{ _Ryt|# y  
c |.~f+  
/* (non-Javadoc) -~n^?0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *<c, x8\s9  
*/ 0Ihp`QGU:  
public void sort(int[] data) { [+\=x[q  
MaxHeap h=new MaxHeap(); G>& Tap>  
h.init(data); 9)9p<(b $  
for(int i=0;i h.remove(); hd^?mZ  
System.arraycopy(h.queue,1,data,0,data.length); x1VBO.t=*  
} >x]b"@Hkw  
CoO..  
private static class MaxHeap{ gi\2bzWkbX  
S~X&^JvT  
void init(int[] data){ c>!zJA B  
this.queue=new int[data.length+1]; *-'u(o  
for(int i=0;i queue[++size]=data; @~,&E*X! .  
fixUp(size); 1zqIB")s>  
} +m8CN(c  
} ZfsM($|a  
7}>Zq`]~  
private int size=0; h8B:}_Cu  
_IYd^c  
private int[] queue; T#KF@8'-  
<#/r.}.x  
public int get() { (&t741DN|  
return queue[1]; #; ~`+[y?\  
} ?-C=_eZJ  
.$&mWytw=  
public void remove() { =;A p+}  
SortUtil.swap(queue,1,size--); gT8Q:8f:  
fixDown(1); z=%&?V  
} :59fb"^$  
file://fixdown ;\-f7!s  
private void fixDown(int k) { Hj(ay4 8  
int j; Lu?MRF f  
while ((j = k << 1) <= size) { G%5bQ|O  
if (j < size %26amp;%26amp; queue[j] j++; ]z3!hgTj  
if (queue[k]>queue[j]) file://不用交换 >n3w'b  
break; uy'm2  
SortUtil.swap(queue,j,k); G8AT] =  
k = j; paCC'*bv  
} :x88  
} oHh~!#u  
private void fixUp(int k) { 1 1Sflj  
while (k > 1) { m03D+@F  
int j = k >> 1; f4[fXP;A  
if (queue[j]>queue[k]) @N+ }cej  
break; NN> E1d=  
SortUtil.swap(queue,j,k); Ad7N '1O  
k = j; A.-j 5C4  
} jR1t&UD3Y  
} E&>3{uZI  
tV.qdy/]}  
} 8.JFQ/) i  
$[(amj-;l  
} 'C[{cr.`  
 \EI<1B  
SortUtil: J34/rL/s  
3QSA|  
package org.rut.util.algorithm; ,jH<i.2R  
l/*NscYtQ  
import org.rut.util.algorithm.support.BubbleSort; c+S<U*  
import org.rut.util.algorithm.support.HeapSort; vX?MB  
import org.rut.util.algorithm.support.ImprovedMergeSort; Lsu_ f'p0  
import org.rut.util.algorithm.support.ImprovedQuickSort; >%6a$r~@  
import org.rut.util.algorithm.support.InsertSort; ]cQYSN7!SY  
import org.rut.util.algorithm.support.MergeSort; ({&\~"  
import org.rut.util.algorithm.support.QuickSort; Y6W#u iqk  
import org.rut.util.algorithm.support.SelectionSort; U)v){g3w)  
import org.rut.util.algorithm.support.ShellSort; ?`T0zpC  
|)5xmN]  
/** Z01BzIsR  
* @author treeroot S2+X/YeB  
* @since 2006-2-2 ke\gzP/  
* @version 1.0 "R<c  
*/ 4C:-1gu7  
public class SortUtil { LK>A C9ak<  
public final static int INSERT = 1; ?58,Ja  
public final static int BUBBLE = 2; |; [XZ ZZ  
public final static int SELECTION = 3; p9X{E%A<:  
public final static int SHELL = 4; 1Jm'9iy3  
public final static int QUICK = 5; E^s<5BC;  
public final static int IMPROVED_QUICK = 6; ccR#<Pb6q  
public final static int MERGE = 7; t_xO-fT)  
public final static int IMPROVED_MERGE = 8; S"=y >.#  
public final static int HEAP = 9; L/Tsq=  
3bsuE^,.@  
public static void sort(int[] data) { b;;mhu  
sort(data, IMPROVED_QUICK); 6Dl]d %.  
} EN2H[i+,  
private static String[] name={ |(eRv?Qy@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" simD<&p  
}; !&(^R<-id  
!#[B#DZc(  
private static Sort[] impl=new Sort[]{ rd_!'pG  
new InsertSort(), 1 lZRi-P  
new BubbleSort(), ;9&#Sb/  
new SelectionSort(), ;6)Onwx  
new ShellSort(), 2#jBh   
new QuickSort(), y/vGt_^;3<  
new ImprovedQuickSort(), xcHuH -}  
new MergeSort(), 3a Y^6&  
new ImprovedMergeSort(), L$zB^lSM  
new HeapSort() 1XppC[))  
}; cM?i _m  
F=g +R~F  
public static String toString(int algorithm){ n9H4~[JiC  
return name[algorithm-1]; ITssBB9  
} 'g5 Gdn  
UG !+&ii|  
public static void sort(int[] data, int algorithm) { 90Sp(  
impl[algorithm-1].sort(data); 0FAe5 BE7  
} < C1Jim  
[,a2A  
public static interface Sort { dy' J~Eo7  
public void sort(int[] data); O~*`YsL9  
} P->.eo#VG  
b # |  
public static void swap(int[] data, int i, int j) { gm8FmjZtf  
int temp = data; 'kb|!  
data = data[j]; -\|S=< g  
data[j] = temp; |Y tZOQu  
} 3;%dn \ D  
} 360b`zS  
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
如果您提交过一次失败了,可以用”恢复数据”来恢复帖子内容
认证码:
验证问题:
10+5=?,请输入中文答案:十五