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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。 BU_nh+dF  
插入排序: kzLsoZ!I  
X_h}J=33Q  
package org.rut.util.algorithm.support; cT,sh~-x,  
m(!FHPvN  
import org.rut.util.algorithm.SortUtil; 4$<JHo @.  
/** cq]6XK-W  
* @author treeroot ~ 7s!VR  
* @since 2006-2-2 4VSU8tK|N]  
* @version 1.0 Sm|6 %3  
*/ CCx&7f  
public class InsertSort implements SortUtil.Sort{ Hn"RH1Zy  
9A=,E&  
/* (non-Javadoc) b$jo Y*< 6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >bW #Zs,6  
*/ `^&OF u ee  
public void sort(int[] data) { eauF ~md,  
int temp; 0h_|t-9j  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Yq KCeg  
} %u'u kcL7  
} ~?BXti<!  
} ?tbrbkx  
wHy!CP%  
} fZF@k5*\  
HZge!Yp<  
冒泡排序: }}~|!8  
C'x&Py/#  
package org.rut.util.algorithm.support; :o3N;*o>)0  
l_p2Riv  
import org.rut.util.algorithm.SortUtil; L,!?Nt\  
GTd,n=  
/** #6=  
* @author treeroot rILYI;'o  
* @since 2006-2-2 {<KVx9  
* @version 1.0 ?caSb =f  
*/ [W&T(%(W-  
public class BubbleSort implements SortUtil.Sort{ S9.o/mr  
77Dn97l)&  
/* (non-Javadoc) hgq;`_;1,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZECfR>`x  
*/ qE"OB  
public void sort(int[] data) { zDG b7S{  
int temp; H:| uw  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9'B `]/L  
if(data[j] SortUtil.swap(data,j,j-1); oEv 'dQ9  
} Dd|VMW=  
} 2^7`mES  
} AK4t\D)K1  
} guR/\z$D@C  
W=?<<dVYD  
} ? J0y|  
Bzf^ivT3L  
选择排序: I?CZQ+}Hq  
'g\4O3&_  
package org.rut.util.algorithm.support; L4W5EO$  
6=C<>c %+  
import org.rut.util.algorithm.SortUtil; ;$4\e)AB  
1% `Rs  
/** ? r4>"[  
* @author treeroot :ws<-Qy  
* @since 2006-2-2 At;LO9T3z  
* @version 1.0 }SZd  
*/ 3v-~K)hl?  
public class SelectionSort implements SortUtil.Sort { Vurq t_nb  
%cn<ych G  
/* dZuOrTplA  
* (non-Javadoc) tH4B:Bgj!  
* #'`{Qv0,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) KI.hy2?e  
*/ vY3h3o  
public void sort(int[] data) { }@)[5N# A|  
int temp; [-w%/D%@  
for (int i = 0; i < data.length; i++) { y~V(aih}D  
int lowIndex = i; .xkM.g4{~  
for (int j = data.length - 1; j > i; j--) { i|kRK7[6B  
if (data[j] < data[lowIndex]) { c71y'hnT  
lowIndex = j; | -H& o]  
} Id9TG/H7  
} er\|i. Y  
SortUtil.swap(data,i,lowIndex); L~3Pm%{@A  
} lB4WKn=?Kl  
} 4+tEFxvX&  
4qa.1j(R/  
} U<XG{<2  
"dlV k~  
Shell排序: /-s6<e!  
|s_GlJV.  
package org.rut.util.algorithm.support; EqiY\/S  
#dHa,HUk  
import org.rut.util.algorithm.SortUtil; yhJ@(tu.Gd  
:4|4=mkr  
/** !)$Zp\Sg  
* @author treeroot XWw804ir  
* @since 2006-2-2 Zd+bx*rD  
* @version 1.0 (@YG~ 0  
*/ -?a 26o%e  
public class ShellSort implements SortUtil.Sort{ j8gdlIx  
zuCSj~  
/* (non-Javadoc) MQ2_`pi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mE[y SrV  
*/ V]^$S"Tv  
public void sort(int[] data) { X8\GzNE~R  
for(int i=data.length/2;i>2;i/=2){ An@t?#4gxi  
for(int j=0;j insertSort(data,j,i); ;*J  
} xSu >  
} B5QFK  
insertSort(data,0,1); 5V-I1B&  
} wIgS3K  
Bw.i}3UT6  
/** 4p wH>1  
* @param data -\MG}5?!  
* @param j FI.\%x  
* @param i X>^fEQq"  
*/ v[<T]1=LRC  
private void insertSort(int[] data, int start, int inc) { O.M 1@w]  
int temp; 6u%&<")4HP  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 4M T 7`sr  
} |j|rS5  
} Gw` L"  
} '"Nr,vQo  
gG uO  
} 05R@7[GWq  
 !@sUj  
快速排序: 2<6UwF  
p7 ~!z.)o  
package org.rut.util.algorithm.support; !x)R=Z/C  
k7^5Bp8=  
import org.rut.util.algorithm.SortUtil; ,%y /kS]  
xD7]C|8o  
/** /{2,zW  
* @author treeroot kxCSs7J/  
* @since 2006-2-2 4ppz,L,4  
* @version 1.0 JGZBL{8  
*/ I=#$8l.*  
public class QuickSort implements SortUtil.Sort{ 8EYkQ  
qgB_=Q#E  
/* (non-Javadoc) @F>D+=hS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [>9is=>o.  
*/ i~72bMwsA  
public void sort(int[] data) { =pr7G+_u  
quickSort(data,0,data.length-1); XP}<N&j  
} ~M$Wd2Th  
private void quickSort(int[] data,int i,int j){ G/W>S,(  
int pivotIndex=(i+j)/2; atzX;@"K  
file://swap >Gu M]qn  
SortUtil.swap(data,pivotIndex,j); dWW.Y*339  
6~+e mlD  
int k=partition(data,i-1,j,data[j]); O&&~NXI\  
SortUtil.swap(data,k,j); 3U}%2ARo_  
if((k-i)>1) quickSort(data,i,k-1); HKeK<V  
if((j-k)>1) quickSort(data,k+1,j); BLFdHB.$T  
Lj7AZ|k  
} ^^Vg~){4  
/** d_ CT $  
* @param data VaPG-n>Vf  
* @param i R!1p^~/  
* @param j {)Xy%QV  
* @return j1Ezf=N6`  
*/ 62u4-}JzF  
private int partition(int[] data, int l, int r,int pivot) { ?4uL-z](V  
do{ cb bFw  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); d5-qZ{W  
SortUtil.swap(data,l,r); r<\u6jF  
} ,z6~?6m  
while(l SortUtil.swap(data,l,r); 0`H# '/  
return l; qSQ~D(tO  
} 1*7@BP5  
Zd&S@Z  
} ('~LMu_  
&Qm@9Is  
改进后的快速排序: V6Dbd" i9  
tp|d*7^i  
package org.rut.util.algorithm.support; $ Q0n  
31)&vf[[  
import org.rut.util.algorithm.SortUtil; ]'S^]  
6B-16  
/** t,' <gI  
* @author treeroot 5-M-X#(  
* @since 2006-2-2 AwN!;t_0+N  
* @version 1.0 s^SJY{  
*/ ]^]wP]R_  
public class ImprovedQuickSort implements SortUtil.Sort { =H~j,K  
u:EiwRW  
private static int MAX_STACK_SIZE=4096; `X8F`5&U\f  
private static int THRESHOLD=10; V.Mry`9-  
/* (non-Javadoc) T C"<g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) QW"! (`K  
*/ 4+ig' |o  
public void sort(int[] data) { M3AXe]<eC1  
int[] stack=new int[MAX_STACK_SIZE]; Pc9H0\+Xk  
] R*A  
int top=-1; @PU [:;  
int pivot; PW4q~rc=:  
int pivotIndex,l,r; ntY]SK%Z  
SX*RP;vHy  
stack[++top]=0;  _4f;<FL  
stack[++top]=data.length-1; W9)&!&<o  
9FX-1,Jx  
while(top>0){ H.0K?N&\?>  
int j=stack[top--]; "5 A! jq  
int i=stack[top--]; r :dTz  
/<3UQLMa  
pivotIndex=(i+j)/2; 1&2>LE/P  
pivot=data[pivotIndex]; fR|A(u#9  
T;#FEzBz  
SortUtil.swap(data,pivotIndex,j); Wjc'*QCPl  
e# bn#  
file://partition {b{s<@?  
l=i-1; 54/=G(F   
r=j; y)*RV;^  
do{ %3 rP `A  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); -HuA \0J  
SortUtil.swap(data,l,r); ctUp=po  
} wS*E(IAl  
while(l SortUtil.swap(data,l,r); #Dac~>a'  
SortUtil.swap(data,l,j); *h|U,T7ew  
A=4OWV?  
if((l-i)>THRESHOLD){ / j^  
stack[++top]=i; 0`hdMLONR  
stack[++top]=l-1; n*$ g]G$  
} Je{ykL?N  
if((j-l)>THRESHOLD){ Lr<cMK<  
stack[++top]=l+1; 4R*,VR.K  
stack[++top]=j; #b`k e/P  
} y)pk6d   
}M+7 T\ J!  
} M?qy(zb  
file://new InsertSort().sort(data); $u.z*b_yy  
insertSort(data); D]}G.v1  
} Yz bXuJ4  
/** .u:GjL'$  
* @param data a =QCp4^  
*/ z:;CX@)*  
private void insertSort(int[] data) { ,s(,S  
int temp; HP =+<]?{G  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 8_8l.!~  
} =Uh$&m  
} xA/D'  
} RpF&\x>  
hQ i2U  
} KSvE~h[#+  
9iq_rd]  
归并排序: o@Oqm>]SS  
nlYNN/@"  
package org.rut.util.algorithm.support; OCUr{Nh  
kl`W\tF  
import org.rut.util.algorithm.SortUtil; HhpDR  
68 sB )R  
/** ;fJ.8C  
* @author treeroot TN.rrop`#g  
* @since 2006-2-2 uc=B,3  
* @version 1.0 2?5>o!C  
*/ q@qsp&0/  
public class MergeSort implements SortUtil.Sort{ "#]$r  
P%6~&woF  
/* (non-Javadoc) : 'c&,oLY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T |p"0b A  
*/ yZRzIb_  
public void sort(int[] data) { N$DkX)Z  
int[] temp=new int[data.length]; "{n&~H`  
mergeSort(data,temp,0,data.length-1); ^_6|X]tz1T  
} /mMV{[  
:svq E+2  
private void mergeSort(int[] data,int[] temp,int l,int r){ g{Rd=1SK]  
int mid=(l+r)/2; OPi0~s  
if(l==r) return ; ,>M[@4`,U  
mergeSort(data,temp,l,mid); +%&yJ4-  
mergeSort(data,temp,mid+1,r); G3 m Z($y  
for(int i=l;i<=r;i++){ P3%5?.S  
temp=data; Kgv T"s.  
} %$I;{-LD  
int i1=l; 0erNc'e  
int i2=mid+1; U(Zq= M  
for(int cur=l;cur<=r;cur++){ 9z0p5)]n>  
if(i1==mid+1) >0gW4!7Y  
data[cur]=temp[i2++]; ;*N5Y}?j'  
else if(i2>r) ),)lzN%!  
data[cur]=temp[i1++]; >7FHo-H/T  
else if(temp[i1] data[cur]=temp[i1++]; N;d] 14|  
else u y+pP!<  
data[cur]=temp[i2++]; /{[o ~:'p  
} 2/f}S?@   
} ; KA~Z5x;  
*#2h/Q.  
} j+!v}*I![  
T+$[eWk"a  
改进后的归并排序: B[}6-2<>?C  
H.;Q+A,8^  
package org.rut.util.algorithm.support; pw#-_  
ZC ?Xqp  
import org.rut.util.algorithm.SortUtil; n|hNM?v  
9$Y=orpWxr  
/** 0%B/,/PxD  
* @author treeroot CAlCDfKW}  
* @since 2006-2-2 3 {V>S,O3]  
* @version 1.0 /efUjkP  
*/ vIvIfE  
public class ImprovedMergeSort implements SortUtil.Sort { "N;EL0=  
=*Lfl'sr_  
private static final int THRESHOLD = 10; *hrvYil2b  
H+#FSdy#  
/* t7pFW^&  
* (non-Javadoc) C^){.UGmJ  
* r^ XVB`v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) jCY %|  
*/ :]"V-1#}  
public void sort(int[] data) { gIfh3D=yX  
int[] temp=new int[data.length]; uO**E-`  
mergeSort(data,temp,0,data.length-1); <%^&2UMg  
} FwK] $4*  
*Ly6`HZ9  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5(2;|I,T  
int i, j, k; F{wzB  
int mid = (l + r) / 2; y} '@R$  
if (l == r) l}h!B_P'  
return; JC"z&ka  
if ((mid - l) >= THRESHOLD) eE Kf|I  
mergeSort(data, temp, l, mid); K:M8h{Ua  
else =D(j)<9$A  
insertSort(data, l, mid - l + 1); m~|40)   
if ((r - mid) > THRESHOLD) 0J|3kY-n>  
mergeSort(data, temp, mid + 1, r); cK@wsA^4  
else <v2;p}A  
insertSort(data, mid + 1, r - mid); )+^+s d  
~Ei<Z`3}7"  
for (i = l; i <= mid; i++) { +3gp%`c4  
temp = data; =wJX 0A|  
} @WhHUd4s  
for (j = 1; j <= r - mid; j++) { <aw[XFg  
temp[r - j + 1] = data[j + mid]; !Cs_F&l"j  
} qK+5NF|  
int a = temp[l]; Sdo-nt  
int b = temp[r]; UG^q9 :t  
for (i = l, j = r, k = l; k <= r; k++) { mDWG7Asp  
if (a < b) { i%/+5gq  
data[k] = temp[i++]; x;S @bY  
a = temp; S/ *E,))m  
} else { gUlo]!$  
data[k] = temp[j--]; +|v90ed  
b = temp[j]; ~o(   
} wkq 66?  
} .}t e>]A*  
} 9$t( &z=  
Gdw VtqbX  
/** e.C)jv6qr  
* @param data x2EUr,7  
* @param l F [M,]?   
* @param i }k0_5S  
*/ s iaG'%@*r  
private void insertSort(int[] data, int start, int len) { Gt1U!dP  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); PCvWS.{  
} ! if   
} <%d>v-=B  
} b}f~il  
} SBpL6~NW  
\zY!qpX<  
堆排序: O^.#d  
~&T~1xsFJ  
package org.rut.util.algorithm.support; \m,PA'nd/  
LLo;\WGZ  
import org.rut.util.algorithm.SortUtil; dG{A~Z z  
 g-A-kqo9  
/** |>Vb9:q9Po  
* @author treeroot pRqx`5 }  
* @since 2006-2-2 <} .$l  
* @version 1.0 m*pJBZxd  
*/ w(/S?d  
public class HeapSort implements SortUtil.Sort{ AdEMa}u 6  
2iOV/=+  
/* (non-Javadoc) YVU7wW,1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \G[$:nS  
*/ -@s#uA h  
public void sort(int[] data) { 7r!x1  
MaxHeap h=new MaxHeap(); Ey2^?  
h.init(data); 'V{W-W<  
for(int i=0;i h.remove(); I0 -MRU~[K  
System.arraycopy(h.queue,1,data,0,data.length); %{|pj +  
} \<' ?8ri#  
L#J1b!D&<6  
private static class MaxHeap{ +R&gqja  
uph(V  
void init(int[] data){ *T/']t  
this.queue=new int[data.length+1]; #4PN"o@  
for(int i=0;i queue[++size]=data; w}KkvP^  
fixUp(size); wz%-%39q%  
} qna8|3eP  
} Nc`L;CP  
L_T5nD^D  
private int size=0;  )2.Si#  
DI>s-7  
private int[] queue; e= AKD#  
yAt ^;  
public int get() { +whDU2 "  
return queue[1]; q 1,~  
} fu5=k:/c  
A&VG~r$  
public void remove() { KPF1cJ2N  
SortUtil.swap(queue,1,size--); SU0 hma8  
fixDown(1); xp t:BBo  
} Sc0w.5m6  
file://fixdown (HVGlw'`  
private void fixDown(int k) { X8|,   
int j; DVA:Cmh\  
while ((j = k << 1) <= size) { :> '+"M2r  
if (j < size %26amp;%26amp; queue[j] j++; pP_LR ks}  
if (queue[k]>queue[j]) file://不用交换 uFE)17E  
break; C]6O!Pb0  
SortUtil.swap(queue,j,k); )e{aN+  
k = j; d6O[ @CyP  
} 5O% {{J  
} (>Em^(&  
private void fixUp(int k) { I,tud!p`  
while (k > 1) { { FkF  
int j = k >> 1; kmW4:EA%  
if (queue[j]>queue[k]) Y4-t7UlS;  
break; vaLSH xi  
SortUtil.swap(queue,j,k); *w&e\i|7  
k = j; ;u JMG  
} 7! Nsm  
} It(_v  
&yg|t5o  
} V!Uc(  
TOt dUO  
} K1KreYlF  
]kSGR  
SortUtil: L0,'mS  
2G7Wi!J  
package org.rut.util.algorithm; COlqcq'qAu  
*@5@,=d  
import org.rut.util.algorithm.support.BubbleSort; ll^#JpT[S  
import org.rut.util.algorithm.support.HeapSort; <I?Zk80  
import org.rut.util.algorithm.support.ImprovedMergeSort; -RwE%  cr  
import org.rut.util.algorithm.support.ImprovedQuickSort; 1zv'.uu.,  
import org.rut.util.algorithm.support.InsertSort; :;}P*T*PU  
import org.rut.util.algorithm.support.MergeSort; ?}oFg#m-<L  
import org.rut.util.algorithm.support.QuickSort; `?]k{ l1R  
import org.rut.util.algorithm.support.SelectionSort; 9{l}bu/u  
import org.rut.util.algorithm.support.ShellSort; dPlV>IM$z  
T)/eeZ$  
/** FPz9N@M%Q  
* @author treeroot FrS]|=LJhX  
* @since 2006-2-2 Ui~>SN>s  
* @version 1.0 1}x%%RD_  
*/ K?;DMUSY\  
public class SortUtil { afVT~Sf{  
public final static int INSERT = 1; +(Ae4{z"1+  
public final static int BUBBLE = 2; +7Gwg  
public final static int SELECTION = 3; u`W2 +S  
public final static int SHELL = 4; SUiOJ[5,  
public final static int QUICK = 5; [txE .7p  
public final static int IMPROVED_QUICK = 6; j#|ZP-=1_  
public final static int MERGE = 7; -@'FW*b  
public final static int IMPROVED_MERGE = 8; Lbgi7|&  
public final static int HEAP = 9; .v K-LHs  
pK*TE5]  
public static void sort(int[] data) { 1EK *g;H  
sort(data, IMPROVED_QUICK); c 9Mz]1@f  
} ?uu*L6  
private static String[] name={ aE8VZ8tvq  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Dt@SqX:~Ee  
}; Nn6%9PX_)  
kiEa<-]  
private static Sort[] impl=new Sort[]{ {7[Ox<Ho  
new InsertSort(), N2G{<>=  
new BubbleSort(), $'vU2L  
new SelectionSort(), F9PxSk_\9  
new ShellSort(), V~GDPJ+  
new QuickSort(), /~1+i'7V.,  
new ImprovedQuickSort(), llq<egZpm  
new MergeSort(), dysS9a,  
new ImprovedMergeSort(), %9"H  
new HeapSort() [Xkx_B  
}; _a, s )  
,1`z"7\W  
public static String toString(int algorithm){ \fOEqe*5SM  
return name[algorithm-1]; vx =&QavL  
} #!=tDc &  
VbYdZCC  
public static void sort(int[] data, int algorithm) { )%TmAaj9d  
impl[algorithm-1].sort(data); F,kZU$  
} 8*X4\3:*N  
zLQx%Yg!  
public static interface Sort { }MySaL>  
public void sort(int[] data); w0. u\  
} +{]j]OP  
k$VlfQ'+  
public static void swap(int[] data, int i, int j) { ]L jf?tk  
int temp = data; %d @z39-;  
data = data[j]; [),ige  
data[j] = temp; C!gZN9-  
} F|8 &  
} Py< }S-:  
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