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[JAVA]用Java实现的各种排序

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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。  rl"$6{Z}  
插入排序: >MwjUq  
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package org.rut.util.algorithm.support; ;/l$&:  
_~]~ssn,1  
import org.rut.util.algorithm.SortUtil; >]s\%GO  
/** noJ5h |  
* @author treeroot |*W_  
* @since 2006-2-2 2:3-mWE  
* @version 1.0 TrD2:N}dI  
*/ Er509zZ,[  
public class InsertSort implements SortUtil.Sort{ D+.< kY.  
/P { Zo  
/* (non-Javadoc) 2O;Lw@W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Xf o3fW)s  
*/ uyZ  
public void sort(int[] data) { P@lDhzd  
int temp; u_ou,RF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S{wR Z|8U  
} #SyF-QZ[1  
} S5'ZKk  
} ^C$Oht,cU  
}81eef4$S  
} wiHGTaR  
>v--R8I*  
冒泡排序: $v5)d J  
#y;TSHx/  
package org.rut.util.algorithm.support; nIc:<w]  
X)6}<A  
import org.rut.util.algorithm.SortUtil; '9d<vW g  
}(tuBJ9  
/** tjLp;%6e  
* @author treeroot \A "_|Yg  
* @since 2006-2-2 "  ,k(*  
* @version 1.0 G4O $gg  
*/ B6qM0QW  
public class BubbleSort implements SortUtil.Sort{ P5;n(E(19  
Q5%$P\  
/* (non-Javadoc) : :?,ZA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9)2 kjBeb  
*/ SUGB)vEa  
public void sort(int[] data) { 4PdJ  
int temp; p=13tQS<  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ^<u9I5?  
if(data[j] SortUtil.swap(data,j,j-1); p>x[:*  
} (h&XtFul}  
} #WE"nh9f|z  
} <7  
} ct o+W}k  
e8E*Urtz  
} ;zq3>A  
itotn!Wb`  
选择排序: 3jR>   
lSW6\jX  
package org.rut.util.algorithm.support; ,^Ug[pGG-  
^ &UezDTS  
import org.rut.util.algorithm.SortUtil; ppYIVI  
\Dn47V{7-  
/** Q5K<ECoPk  
* @author treeroot /xS4>@hn  
* @since 2006-2-2 MZPXI{G  
* @version 1.0 ?so=k&I-M  
*/ sWtT"7>x  
public class SelectionSort implements SortUtil.Sort { q!fdiv`  
/i !3Fr"  
/* Uw`YlUT\  
* (non-Javadoc) J)kH$!csi  
* yLFZo"r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $RAS pM  
*/ $nf5bo/;  
public void sort(int[] data) { g#W/WKvM  
int temp;  s*XE  
for (int i = 0; i < data.length; i++) { UYw_k\  
int lowIndex = i; *HC[LM  
for (int j = data.length - 1; j > i; j--) { 3P}^Wu  
if (data[j] < data[lowIndex]) { N*mm[F2+F  
lowIndex = j; O4c[,Uq8~  
} 85{2TXQ^%=  
} Nd;)V  
SortUtil.swap(data,i,lowIndex); lhk=yVG3  
} 8?yRa{'"  
} xbTvv>'U  
Bm e_#  
} ?v5OUmFM  
OCX>LK!K  
Shell排序: J`I^F:y*  
!Py SYY  
package org.rut.util.algorithm.support; LvM;ZfAEv  
0aWy!d  
import org.rut.util.algorithm.SortUtil; 3)ZdT{ MY  
= n>aJ(=Pd  
/** {.r jp`39  
* @author treeroot @gc|Z]CV  
* @since 2006-2-2 G d%X> ~  
* @version 1.0 B)L=)N  
*/ &gv{LJd5b  
public class ShellSort implements SortUtil.Sort{ %)t9b@c!}  
J 7/)XS  
/* (non-Javadoc) Q$`u=-h|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \gU=B|W  
*/ s3Wjg  
public void sort(int[] data) { 0`H)c) pP  
for(int i=data.length/2;i>2;i/=2){ eV"Za.a.  
for(int j=0;j insertSort(data,j,i); 03)R_A  
} W]TO%x{  
} $ap6Vxjr  
insertSort(data,0,1); ",O}{z  
} p?Rq  
5YG %\  
/** U %,K8u|WH  
* @param data <jjn'*44f  
* @param j S&q(PI_"  
* @param i S.)+C2g,@  
*/ =Rw-@ *#l  
private void insertSort(int[] data, int start, int inc) { s/+k[9l2  
int temp; [V2`t'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 8T]x4JQ0  
} pD@2Mt0|]=  
} n[f<]4<  
} IncHY?ud<  
}#bX{?f  
} H)5V \  
MJ% gF=$X  
快速排序: {>]7xTpwZ  
Qzh`x-S  
package org.rut.util.algorithm.support; ;ND)h pD+  
w(6(Fze  
import org.rut.util.algorithm.SortUtil; 0hCrEM!8  
xRiWg/Z~  
/** tqMOh R  
* @author treeroot Z\ 1wEGP7{  
* @since 2006-2-2 USrBi[_ci\  
* @version 1.0 l,w$!FnmR  
*/ 9$iDK$%  
public class QuickSort implements SortUtil.Sort{ Vmb `%k20'  
p$+.]  
/* (non-Javadoc) naaww  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fx]}<IudA^  
*/ 7%7 \2!0J}  
public void sort(int[] data) { y]YUuJ9a  
quickSort(data,0,data.length-1); tUrwg  
} [@4.<4Y  
private void quickSort(int[] data,int i,int j){ Dpf"H  
int pivotIndex=(i+j)/2; sfUKH;xC  
file://swap ==^9_a^  
SortUtil.swap(data,pivotIndex,j); $TK<~3`  
? 3'O  
int k=partition(data,i-1,j,data[j]); "I n[= 2w  
SortUtil.swap(data,k,j); ;5.S"  
if((k-i)>1) quickSort(data,i,k-1); HuRq0/"  
if((j-k)>1) quickSort(data,k+1,j); QVq+';cG  
/t $J<bU  
} }z|@X KA#  
/** EZw<)Q   
* @param data [(d))(M$|  
* @param i !J/fJW>m6  
* @param j 5;4bZ3e,0  
* @return (imaL,M-D  
*/ Ug~ ]!L  
private int partition(int[] data, int l, int r,int pivot) { ,JVWn>s  
do{ q2U8]V U)  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); g UAx8=h  
SortUtil.swap(data,l,r); )_-EeH  
} Yg<4}l."  
while(l SortUtil.swap(data,l,r); mAZfo53  
return l; &40# _>W7  
} %@Ow.7zh  
+T,Yf/^Fn  
} aZBS!X  
mDB?;a>  
改进后的快速排序: <,\Op=$l3I  
NW AT"  
package org.rut.util.algorithm.support; 9`8D Ga  
=TcT`](o  
import org.rut.util.algorithm.SortUtil; y<0RgG1qp  
+/|;<K5_LI  
/** %fH&UFby  
* @author treeroot 9%  wVE]  
* @since 2006-2-2 UFOUkS F  
* @version 1.0 #@^mA{Dt5  
*/ \YN(rD-  
public class ImprovedQuickSort implements SortUtil.Sort { WA1h|:Z  
w15Qqh lK  
private static int MAX_STACK_SIZE=4096; Z H1UAf  
private static int THRESHOLD=10; Q}qw` L1  
/* (non-Javadoc) 9=FqI50{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K|Kc.   
*/ NB@TyU  
public void sort(int[] data) { #eZm)KFQg  
int[] stack=new int[MAX_STACK_SIZE]; E{B8+T:3  
_=*ph0nu  
int top=-1; O_bgrXg6x  
int pivot; 'Io2",~ M  
int pivotIndex,l,r; OMM5p=2Q  
WNo",Vc  
stack[++top]=0; L?:fyNA3[  
stack[++top]=data.length-1; %X^K5Io  
8+=-!": ]  
while(top>0){ $6Az\Iu *  
int j=stack[top--]; wSGW_{;-  
int i=stack[top--]; >v9@p7Dn  
6U!zc]>  
pivotIndex=(i+j)/2; ^U@-Dp,k+  
pivot=data[pivotIndex]; A."]6R<  
e4rhB"qQdn  
SortUtil.swap(data,pivotIndex,j); }]K^b1Fs5  
K H&o`U(}  
file://partition R&P}\cf8T  
l=i-1; Ao}J   
r=j; )/4xR]  
do{ C(jUM!m  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 7!kbe2/]'  
SortUtil.swap(data,l,r); t,4'\nv*  
} }u9wD08x  
while(l SortUtil.swap(data,l,r); 8V f]K}d  
SortUtil.swap(data,l,j); fHc/5uYW  
[e.@Yx_}  
if((l-i)>THRESHOLD){ "eOFp\vPr  
stack[++top]=i; G~$[(Fhk  
stack[++top]=l-1; bayDdR4T  
} E!SxO~  
if((j-l)>THRESHOLD){ 2z+-vT%  
stack[++top]=l+1; JrA\ V=K  
stack[++top]=j; \[MQJX,dn  
} _ giZ'&l!  
l<"Z?z  
} ~IIlCmMl,  
file://new InsertSort().sort(data); 7!r)[2l  
insertSort(data); YI!@ ,t  
} 9@{=2 k  
/** _4lhwKYU  
* @param data {DVu* %|  
*/ H7&bUt/  
private void insertSort(int[] data) { '3'*VcL(  
int temp; ckCb)r_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S#g=;hD  
} U?W?VEOO!7  
} j 5{ "j  
} f;Uf=.#F  
j$Unw  
} 9d8bh4[  
T>e4Og"?  
归并排序: ouO<un  
=(%+S<}  
package org.rut.util.algorithm.support; ^}\!Sn  
'"~ 2xiin  
import org.rut.util.algorithm.SortUtil; KDUa0$"  
L,PD4H"8  
/** lemE/(`a_  
* @author treeroot l$mfsm|{:  
* @since 2006-2-2 B!iz=+RNC1  
* @version 1.0 ) HPe}(ypt  
*/ ^Ox|q_E w}  
public class MergeSort implements SortUtil.Sort{ +\@}IKWl-?  
V3] Z~@  
/* (non-Javadoc) U) B^R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N{o3w.g  
*/ PY{])z3N  
public void sort(int[] data) { /QT"5fxKJ  
int[] temp=new int[data.length]; 8O='Q-& 8  
mergeSort(data,temp,0,data.length-1); {L9WeosQ  
} EKTn$k=  
z:a%kZQ!0  
private void mergeSort(int[] data,int[] temp,int l,int r){ gI5"\"T{  
int mid=(l+r)/2; 8"5^mj  
if(l==r) return ; %V2A}78  
mergeSort(data,temp,l,mid); hErO.ad1o  
mergeSort(data,temp,mid+1,r); [\ALT8vC?m  
for(int i=l;i<=r;i++){ J~,Ny_L  
temp=data; *~H\#N|x  
} 8IrA {UU  
int i1=l; mYRW/8+g  
int i2=mid+1; +PfXc?VU  
for(int cur=l;cur<=r;cur++){  p;k7\7  
if(i1==mid+1) <+iL@'SgF  
data[cur]=temp[i2++]; N-cLp}D}WB  
else if(i2>r) |y}iOI  
data[cur]=temp[i1++]; LRa^x44  
else if(temp[i1] data[cur]=temp[i1++]; .*_uXQ  
else O>)Fl42IeD  
data[cur]=temp[i2++]; p.50BcDg  
} ,ag:w<km  
} V\4zK$]  
` 0}z ;&:  
} !`$xN~_  
:,]*~Nl  
改进后的归并排序: t=B>t S.hO  
CQGq}.Jt!  
package org.rut.util.algorithm.support; z&x3":@u<  
=FfxHo1k  
import org.rut.util.algorithm.SortUtil; @}[yC['  
/6@iRswa  
/** l*(Ml= O{  
* @author treeroot AIK99  
* @since 2006-2-2 N# ?}r>W3  
* @version 1.0 .{}=!>U2  
*/ {P[>B}'rW  
public class ImprovedMergeSort implements SortUtil.Sort { D Xjw"^x  
ytkV"^1^  
private static final int THRESHOLD = 10; ~E J+<[/  
_t'S<jTI  
/* KDQqN]rg  
* (non-Javadoc) Yfotq9.=+  
* <[W41{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -<MA\iSP  
*/ $MPh\T  
public void sort(int[] data) { tITx+i  
int[] temp=new int[data.length]; @_ Q  
mergeSort(data,temp,0,data.length-1); yR|Beno  
} Mb0l*'ZF  
:e|[gEA  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7F!(60xY  
int i, j, k; =mWr8p-H  
int mid = (l + r) / 2; 2qQG  
if (l == r) n9p_D  
return; S( nZ]QEG  
if ((mid - l) >= THRESHOLD)  +?I 1Og  
mergeSort(data, temp, l, mid); { t1|6R0  
else F!yr};@^p  
insertSort(data, l, mid - l + 1); _${//`ia=  
if ((r - mid) > THRESHOLD) q5D_bm7,3  
mergeSort(data, temp, mid + 1, r); `mt. =d  
else njoU0f1`  
insertSort(data, mid + 1, r - mid); ) }.<lSw  
G{C27k>wa  
for (i = l; i <= mid; i++) { %DqPRl.Gu  
temp = data; n>|7 k3  
} FK~FC:K  
for (j = 1; j <= r - mid; j++) { `5$B"p&i  
temp[r - j + 1] = data[j + mid]; *RpBKm&^7  
} /xseI)y.B  
int a = temp[l]; tn@MOOP l  
int b = temp[r]; ^qgOgu  
for (i = l, j = r, k = l; k <= r; k++) { P}dhpU  
if (a < b) { vsDR@Y}k  
data[k] = temp[i++]; h0v4!`PQ-  
a = temp; XC NM  
} else { kl&9M!;:n  
data[k] = temp[j--]; <ic%c/mN  
b = temp[j]; {y0`p1  
} 7 g2@RKo  
} 9"%ot=)  
} [ S_8;j  
T+9#&  
/** `EjPy>kM  
* @param data _h2s(u >\  
* @param l gXzp$#  
* @param i :fW\!o 8Z2  
*/ GLIe8T*ht  
private void insertSort(int[] data, int start, int len) { N9s ,..  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 2S`D7R#6s  
} -N4km5  
} )C0dN>Gb  
} `fA|])3T  
} D. _*p  
iCK p"(kf  
堆排序: >AsrPU[  
Z[&7NJo(  
package org.rut.util.algorithm.support;  ,m^@S  
w)u6J ,  
import org.rut.util.algorithm.SortUtil; D-GIrw{>5  
bOKgR{i  
/** y66V&#`,e0  
* @author treeroot Q:/BC= ~  
* @since 2006-2-2 TAl#V 7PF}  
* @version 1.0 <+%#xi/_  
*/  b}eBy  
public class HeapSort implements SortUtil.Sort{ ?mjQN|D  
^/k`URQ  
/* (non-Javadoc) v o9Fj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) O_n) 2t(c?  
*/ acXB vs  
public void sort(int[] data) { No1*~EQ  
MaxHeap h=new MaxHeap(); MK*WStY  
h.init(data); ^71!.b%  
for(int i=0;i h.remove(); /1Q i9uit  
System.arraycopy(h.queue,1,data,0,data.length); 4kZ9]5#.  
} P%-@AmO^_  
)w.\xA~|  
private static class MaxHeap{ k~<b~VcU  
q!5 *) nw"  
void init(int[] data){ !oDX+hd,%>  
this.queue=new int[data.length+1]; { 4(E @  
for(int i=0;i queue[++size]=data; f-!A4eKe  
fixUp(size); $Bd13%>)  
} ?uq7K"B  
} Wg3\hv29  
q')MKR*  
private int size=0; 6tKm'`^z4  
~jqG  
private int[] queue; svBT~P0x  
I`O)I&KH  
public int get() { ~MOab e  
return queue[1]; R p!R&U/  
} e!:/enQo  
[^U#ic>cT  
public void remove() { %kcyE<c  
SortUtil.swap(queue,1,size--); D)u 9Y  
fixDown(1); >*5+{~k~4  
} RH+'"f  
file://fixdown b.<>CG'  
private void fixDown(int k) { ns{BU->f  
int j; ;T6x$e  
while ((j = k << 1) <= size) { pX nY=  
if (j < size %26amp;%26amp; queue[j] j++; #DL( %=:  
if (queue[k]>queue[j]) file://不用交换 oZY2K3J)  
break; 0^27grU>   
SortUtil.swap(queue,j,k); Ot]Y/;K  
k = j; 2I 2#o9(Ar  
} j\ dY  
} ,s?7EHtC  
private void fixUp(int k) { LHt{y3l]  
while (k > 1) { z&"-%l.b@}  
int j = k >> 1; P [.BK  
if (queue[j]>queue[k]) b0~AN#Es  
break; _-vf<QO]  
SortUtil.swap(queue,j,k); /p=9"?  
k = j; !+E|{Zj  
} ~}c`r4  
} LOD'iiH6  
kg>Ymo.  
} | Q Y_ci  
UHtxzp =[  
} \Lz2"JI  
Q}?yj,D D  
SortUtil: :oH~{EQ  
.Q,IOCHk  
package org.rut.util.algorithm; "]jGCo>9  
Ew4>+o!  
import org.rut.util.algorithm.support.BubbleSort; 31w9$H N  
import org.rut.util.algorithm.support.HeapSort; NW.<v /?=,  
import org.rut.util.algorithm.support.ImprovedMergeSort; cR0RJ$[d  
import org.rut.util.algorithm.support.ImprovedQuickSort; S_z}h  
import org.rut.util.algorithm.support.InsertSort; UeG$lMV  
import org.rut.util.algorithm.support.MergeSort; m]bv2S+5y  
import org.rut.util.algorithm.support.QuickSort; WhO;4-q)2  
import org.rut.util.algorithm.support.SelectionSort; yAu-BObD  
import org.rut.util.algorithm.support.ShellSort; /ry# q% ?  
k \|[=  
/** H$:Z`CQt<  
* @author treeroot VtR?/+8X  
* @since 2006-2-2 $GzTDq Y9@  
* @version 1.0 KPGX/l  
*/ `Z3Qx~f x  
public class SortUtil { CvCk#:@HM  
public final static int INSERT = 1; hrwQh2sm  
public final static int BUBBLE = 2; YU89m7cc'  
public final static int SELECTION = 3; {[~ !6&2(k  
public final static int SHELL = 4; +fgF &.  
public final static int QUICK = 5; ^lqcF.  
public final static int IMPROVED_QUICK = 6; }`oe<|  
public final static int MERGE = 7; [TZlvX(E  
public final static int IMPROVED_MERGE = 8; y\'t{>U/  
public final static int HEAP = 9; UF[2Rb8?  
sckyG  
public static void sort(int[] data) { KfU4#2}  
sort(data, IMPROVED_QUICK); ^y?7B_%:B#  
} vrtK~5K  
private static String[] name={ %$b)l? !  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" "t<$ {  
}; @j%r6N  
\dyJ=tg  
private static Sort[] impl=new Sort[]{ oKIry 8'^N  
new InsertSort(), _}X_^taTZS  
new BubbleSort(), 5Rv6+d  
new SelectionSort(), s!\uR.  
new ShellSort(), Y$%/H"1bk  
new QuickSort(), *E<%db C2  
new ImprovedQuickSort(), Ni$WI{e9  
new MergeSort(), YfC1.8  
new ImprovedMergeSort(), P@Wi^svj  
new HeapSort() UTEUVcJ\  
}; `.z;.&x  
rp sq.n   
public static String toString(int algorithm){ }]pq&v!  
return name[algorithm-1]; "_qH+ =_R  
} wVvk{tS  
$73j*@EQA  
public static void sort(int[] data, int algorithm) { v535LwFW  
impl[algorithm-1].sort(data); 7qB}Hvh  
} }5H3DavW  
h1.]Nl C  
public static interface Sort { |x|#n  
public void sort(int[] data); 0`=#1u8  
} '`q&UPg]  
L\||#w   
public static void swap(int[] data, int i, int j) { P8K{K:T  
int temp = data; 0]l _qxv  
data = data[j]; kji*7a?y  
data[j] = temp; .+<Ul ]e/  
} 6!} @vp![  
} OO@ (lt  
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