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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。 :k.>H.8+~  
插入排序: .ejC#vB{KM  
ct*~\C6Ze  
package org.rut.util.algorithm.support; ?j!/ Hc/b4  
UeB St.  
import org.rut.util.algorithm.SortUtil; 4yxf/X)  
/** P&o+ut:  
* @author treeroot =hh,yi  
* @since 2006-2-2 A#~CZQY^$  
* @version 1.0 q}JP;p(#  
*/ M#],#o*G  
public class InsertSort implements SortUtil.Sort{ uX7"u*@Q*~  
"el3mloR 8  
/* (non-Javadoc) ABtv|0K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uZ1G,9  
*/ p_g8d&]V  
public void sort(int[] data) { i2O$oHd  
int temp; EJ:2]!O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); J(,gLl  
} S^e e<%-  
} G8W^XD  
} ,tFLx#e#  
OOus*ooo2  
} ?y*yl  
G"<} s mB  
冒泡排序: jA%R8hdr_  
gWjz3ob  
package org.rut.util.algorithm.support; 5&U?\YNLa  
ss7Z-A4z  
import org.rut.util.algorithm.SortUtil; Z=s]@r  
<^A1.o< GN  
/** y=y#*yn&  
* @author treeroot ~ln96*)M;  
* @since 2006-2-2 r$d'[ZcX  
* @version 1.0 P<xCg  
*/ +JFE\>O  
public class BubbleSort implements SortUtil.Sort{ Q;p% VQ  
TbR Ee;1  
/* (non-Javadoc) \G]vTK3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yD&UH_ 1g  
*/ >R6>*|~S  
public void sort(int[] data) { pXxpEv  
int temp; 3)py|W%X $  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ->YF</I  
if(data[j] SortUtil.swap(data,j,j-1); UazUr=| e  
} =g^JJpS  
} p8u -3  
} KA0_uty/T  
} }W R?n  
_Nq7_iT0  
} Y)v_O_`  
T .L>PL ?=  
选择排序: )eSD5hOI)  
6Yx/m  
package org.rut.util.algorithm.support; UzmD2A sO"  
. !;K5U  
import org.rut.util.algorithm.SortUtil; Uu3<S  
.Cf`D tK  
/** _"%-=^_  
* @author treeroot BIjQ8 t  
* @since 2006-2-2 3DO ^vV  
* @version 1.0 HBnnIbEtF'  
*/ |d8x55dk  
public class SelectionSort implements SortUtil.Sort { 6o/!H  
"Dwaq*L  
/* | sio:QP  
* (non-Javadoc) :vJ0Ypz-u  
* #\fxU:z~r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (>\w8]  
*/ nXOJ  
public void sort(int[] data) { ^.@BD4/RPt  
int temp; gNG_,+=!  
for (int i = 0; i < data.length; i++) { AlRng& o~  
int lowIndex = i; $R[ggH&  
for (int j = data.length - 1; j > i; j--) { ]2P*Z6Az  
if (data[j] < data[lowIndex]) { eO:wx.PW  
lowIndex = j; 36U z fBa  
} )tyhf(p6  
} Sc zYL?w^  
SortUtil.swap(data,i,lowIndex); oopACE>  
} n^ AQ!wC  
} ,1+)qv#|i  
2Y@:Vgg  
} }QL 2#R  
uxd5XS  
Shell排序: q^_PR|  
Sp=6%3fZ]m  
package org.rut.util.algorithm.support; #X(KW&;m  
u!As?AD.  
import org.rut.util.algorithm.SortUtil; +JMB98+l  
S6r$n  
/** (*Jcx:rH  
* @author treeroot <y}`PmIM I  
* @since 2006-2-2 n%>c4*t  
* @version 1.0 <"g ^V  
*/ 0OndSa,  
public class ShellSort implements SortUtil.Sort{ f"j"ZM{~U  
Fx.hti  
/* (non-Javadoc) #l6L7u0~wC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vPn(~d_  
*/ JwNG`M Gc  
public void sort(int[] data) { w~eF0 {h  
for(int i=data.length/2;i>2;i/=2){ J3oj}M*  
for(int j=0;j insertSort(data,j,i); \o-Q9V  
} $W 46!U3  
} )pS1yYLj  
insertSort(data,0,1); $DmWK_A  
} xr uQ=Q  
4}FuoQL  
/** ^FJ=/#@T  
* @param data \$o!M1j  
* @param j w z-9+VN6  
* @param i HL;y5o?  
*/ 5eI3a!E]O  
private void insertSort(int[] data, int start, int inc) { }LDH/# u  
int temp; sjpcz4|K  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); _cqB p7  
} VjbRjn5LI  
} _ECWSfZ  
} [HJ^'/bB'  
#>+O=YO  
} q<L>r?T[  
uV r6tb1  
快速排序: \$Xo5f<  
$=7[.z&  
package org.rut.util.algorithm.support; &>UI{  
G992{B  
import org.rut.util.algorithm.SortUtil; -/:N&6eRb  
&ah!g!o3  
/** @ !0@f'}e  
* @author treeroot YGP.LR7  
* @since 2006-2-2 Az29?|e  
* @version 1.0 9(>]6|XS  
*/ !424K-nW  
public class QuickSort implements SortUtil.Sort{ zc&>RM  
Hi$J@xU  
/* (non-Javadoc) `9a %vN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gPO,Z  
*/ `y5?lS*  
public void sort(int[] data) { Q}p+/-U\  
quickSort(data,0,data.length-1); ( H/JB\~r  
} "'us.t.  
private void quickSort(int[] data,int i,int j){ P?GHcq$\  
int pivotIndex=(i+j)/2; %$/t`'&o-  
file://swap okfGd= &  
SortUtil.swap(data,pivotIndex,j); *oAv:8"iY  
'_& Xemz  
int k=partition(data,i-1,j,data[j]); }gQ FWT  
SortUtil.swap(data,k,j); ">vxYi  
if((k-i)>1) quickSort(data,i,k-1); iiS^xqSNCt  
if((j-k)>1) quickSort(data,k+1,j); %n-:mSus  
*I)o Dq3  
} R)% Jr.U  
/** 5$o]D  
* @param data *RugVH4  
* @param i 40}qf}8n t  
* @param j [MfKBlA  
* @return WZq0$:I;R  
*/ hA1\+r  
private int partition(int[] data, int l, int r,int pivot) {  nN!/  
do{ o@TxDG  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); M`!\$D  
SortUtil.swap(data,l,r); g_?:G$1H  
} Mf)0Y~_:R#  
while(l SortUtil.swap(data,l,r); 23XSQHVx  
return l; dn0?#=  
} pC 5J '@  
F3*]3,&L  
} eekp&H$'s  
k,o|"9H  
改进后的快速排序: b|F_]i T  
fpbb <Ro  
package org.rut.util.algorithm.support; KLv`Xg\  
~IvAnwQ'  
import org.rut.util.algorithm.SortUtil; 2Cd#~  
L'k )  
/** dKyJ.p   
* @author treeroot U X)k;h  
* @since 2006-2-2 6u>${}  
* @version 1.0 )-$Od2u2c  
*/ o.yuz+  
public class ImprovedQuickSort implements SortUtil.Sort { rj zRZ  
J@RhbsZn  
private static int MAX_STACK_SIZE=4096; uJ jm50R<  
private static int THRESHOLD=10; vZj:\geV  
/* (non-Javadoc) J6Uo+0S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P,y*H_@k  
*/ "N'tmzifh  
public void sort(int[] data) { Hts.G~~8  
int[] stack=new int[MAX_STACK_SIZE]; M\5aJ:cQ+  
4DY\QvW5  
int top=-1; Vae}:8'}  
int pivot; 0ut/ ')[  
int pivotIndex,l,r; ~"eos~AuW  
tr8a_CV  
stack[++top]=0; ` #Qlr+X  
stack[++top]=data.length-1; {+~}iF<%  
PCzC8~t  
while(top>0){ ~#/NpKHT@A  
int j=stack[top--]; < GoUth.#  
int i=stack[top--]; SV%;w>  
5U)Ia>p  
pivotIndex=(i+j)/2; ?@"F\Bv<h  
pivot=data[pivotIndex]; b77Iw%x7  
G'b*.\=  
SortUtil.swap(data,pivotIndex,j); R5M/Ho 4  
/VFh3n>I2  
file://partition IC&>PwXb  
l=i-1; LIfQh  
r=j; LWG%]m|C  
do{ *o<zo `  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ph*?y  
SortUtil.swap(data,l,r); Zpfsh2`  
} ' S%?&4  
while(l SortUtil.swap(data,l,r); O$ dz=)  
SortUtil.swap(data,l,j); #R2wt7vE  
z ((Y\vP  
if((l-i)>THRESHOLD){ ^P30g2gv>  
stack[++top]=i; OW}ny  
stack[++top]=l-1; [n%=2*1p  
} HRX}r$  
if((j-l)>THRESHOLD){ 3>60_:+Zb  
stack[++top]=l+1; 7l Q@I}i  
stack[++top]=j; VK>ZH^-  
} sfb)iH|sW  
PVfky@wl"  
} }N @8zB~X  
file://new InsertSort().sort(data); {O24:'K&  
insertSort(data); .g Z1}2GF=  
} sa8Q1i&%  
/** u!$+1fI>  
* @param data +5AWX,9,-  
*/ D==C"}J  
private void insertSort(int[] data) { 3a|I| NP  
int temp;  862e  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); bF_SD\/  
} K+HP2|#6  
} <L!9as]w  
} Whd.AaD\  
}:QQ{h_  
} xWC*DKV  
w|t}.u  
归并排序: r Uau? ?  
!>E$2}Q|]  
package org.rut.util.algorithm.support; c&> S  
>#u9W'@|  
import org.rut.util.algorithm.SortUtil; GXk]u  
msf%i!  
/** \mp2LICQg  
* @author treeroot Ja4j7 d1:  
* @since 2006-2-2 eDkJ+5b  
* @version 1.0 Z'!Ii+'6  
*/ Vi 9Kah+  
public class MergeSort implements SortUtil.Sort{ 8'<RPU}M  
nO#a|~-))  
/* (non-Javadoc) {TOz}=R"3h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uO^,N**R#  
*/ E'g?44vyw  
public void sort(int[] data) { m#Y[EPF=|  
int[] temp=new int[data.length]; WALK@0E  
mergeSort(data,temp,0,data.length-1); U;w| =vM  
} I+GP`=\  
+o3 ZQ9  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]broU%#"  
int mid=(l+r)/2; JHJIjYG>P  
if(l==r) return ; P*!~Z *"  
mergeSort(data,temp,l,mid); 8-5g6qAS  
mergeSort(data,temp,mid+1,r); 'hNRIM1  
for(int i=l;i<=r;i++){ 3UgPVCT  
temp=data; ./qbWr`L  
} GeFu_7u!|  
int i1=l; -IE=?23Do?  
int i2=mid+1; MwE^.6xl{  
for(int cur=l;cur<=r;cur++){ ?{]"UnyVE*  
if(i1==mid+1)  [1Q:  
data[cur]=temp[i2++]; -Pp =)_O  
else if(i2>r) f\u5=!kjN  
data[cur]=temp[i1++]; M2Zk1Z  
else if(temp[i1] data[cur]=temp[i1++]; -~NjZ=vPh  
else 70F(`;  
data[cur]=temp[i2++]; dF+R q|n{  
} \R.Fmeko  
} 4<btWbk5u*  
m?y'Y`  
} 5E!Wp[^  
$_+.D`vx`  
改进后的归并排序: $h|8z  
c :u2a/Q?  
package org.rut.util.algorithm.support; )YPu t.  
yP"D~u  
import org.rut.util.algorithm.SortUtil; 7e/K YS+!s  
l0BYv&tu  
/** eMOnzW|h  
* @author treeroot Y;1J` oT  
* @since 2006-2-2 55V&[>|K5  
* @version 1.0 =SK{|fBB  
*/ "vF7b|I  
public class ImprovedMergeSort implements SortUtil.Sort { ?UBhM,;XK  
uuf+M-P  
private static final int THRESHOLD = 10; PS/00F/Ak  
Stk'|-z  
/* Rf#t|MW*#  
* (non-Javadoc) EViDMp"  
* psM&r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7b hJt_`Q  
*/ e$4$G<8;y  
public void sort(int[] data) { ~IS3i'bh  
int[] temp=new int[data.length]; m ol|E={si  
mergeSort(data,temp,0,data.length-1); GcHZ&m4  
} ^T_2 s  
 cE7IHQ  
private void mergeSort(int[] data, int[] temp, int l, int r) { mAuN* (  
int i, j, k; ]oE:p  
int mid = (l + r) / 2; 3sz?49tX  
if (l == r) *K=Yrisz  
return; >-4kO7.V  
if ((mid - l) >= THRESHOLD) !~a1xI~s  
mergeSort(data, temp, l, mid); RrRE$g  
else ky{-NrK  
insertSort(data, l, mid - l + 1); ?vocI  
if ((r - mid) > THRESHOLD) X Frgnnt  
mergeSort(data, temp, mid + 1, r); hgI;^ia  
else PP!} w  
insertSort(data, mid + 1, r - mid); &?#!%Ds  
yUlYf#`H  
for (i = l; i <= mid; i++) { zH1:kko  
temp = data; )NCSO b  
}  &&sCaNb  
for (j = 1; j <= r - mid; j++) { .+2@(r  
temp[r - j + 1] = data[j + mid]; XE.Y?{,R$  
} FX:'38-fk  
int a = temp[l]; MP%pEUomev  
int b = temp[r]; $S{]` +  
for (i = l, j = r, k = l; k <= r; k++) { ^laf!kIP  
if (a < b) { :Tn1]a)f6  
data[k] = temp[i++]; _do(   
a = temp; &Ez]pKjB  
} else { n ;0x\Q|S  
data[k] = temp[j--]; q?2kD"%$  
b = temp[j]; @Sd l~'"  
} Fc.1)yh.  
} _)F0o C {  
} i}}}x  
G,JK$j>*l  
/** ^. ; x  
* @param data 8 !+eq5S3  
* @param l aIW W[xZ  
* @param i {fAj*,pzl  
*/ Ceco^Mw  
private void insertSort(int[] data, int start, int len) { 4> $weu^  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :c^9\8S  
} ^VAvQ(b!:i  
} #Hyfj j  
} 268H!'!\  
} 3^J~ts{*  
-+w^"RBV  
堆排序: Bq)aA)gF  
Bh*7uNM  
package org.rut.util.algorithm.support; gBCO>nJws  
qD?-&>dBWi  
import org.rut.util.algorithm.SortUtil; Z2wgfP`  
\ 4r?=5v*  
/** 8!q$8]M  
* @author treeroot Lp}>WCams  
* @since 2006-2-2 mFu0$N6]H  
* @version 1.0 FELTmQUV  
*/ {Y#$  
public class HeapSort implements SortUtil.Sort{ =9@t6   
c _faW  
/* (non-Javadoc) />E:}1}{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 39zwPoN>  
*/ lqe71](sK8  
public void sort(int[] data) { 5v@-.p  
MaxHeap h=new MaxHeap(); W nLMa|e  
h.init(data); n'-?CMH`  
for(int i=0;i h.remove(); b08s610fk  
System.arraycopy(h.queue,1,data,0,data.length); :- Al}7  
} "2~%-;c  
3] u[NR  
private static class MaxHeap{ L1i:hgq0]  
mtQlm5l  
void init(int[] data){ 4v("qNw#  
this.queue=new int[data.length+1]; _jr'A-M  
for(int i=0;i queue[++size]=data; %Qc5_of  
fixUp(size); {zf)im[.  
} >TqMb8e_  
} 861!p%y5  
rIg5Wcd  
private int size=0; M((]> *g  
n2#Yw}7^,o  
private int[] queue; I3wv6xZ2  
KS6H`Mm}/  
public int get() { UFLN/  
return queue[1]; _ Db05:r@  
} !PIpvx{aX  
}wh sZ  
public void remove() { Zoi\r  
SortUtil.swap(queue,1,size--); 3Wl,T5}{  
fixDown(1); ]U8VU  
} U0Y;*_>4  
file://fixdown =h<LlI^v  
private void fixDown(int k) { 4CT _MAj  
int j; WE hDep:  
while ((j = k << 1) <= size) { aj71oki)  
if (j < size %26amp;%26amp; queue[j] j++; m<DiYxK  
if (queue[k]>queue[j]) file://不用交换 HaUfTQ8  
break; O&Ws*k  
SortUtil.swap(queue,j,k); covr0N)  
k = j; *nPB+@f  
} .|pyloL.  
} JF vVRGWB  
private void fixUp(int k) { 38[ko 3  
while (k > 1) { +@QN)ZwVy  
int j = k >> 1; 45u\v2,C3  
if (queue[j]>queue[k]) b"t<B2N  
break; g@<E0 q&`$  
SortUtil.swap(queue,j,k); )tRqt9Th*  
k = j; #ZPU.NNT?  
} <#hltPyh  
} 4a&*?=GG  
*7ggw[~  
} ]7d~,<3R  
(L{Kg U&{$  
} e+!+(D  
>z`^Q[  
SortUtil: }[[  
%SwN/rna  
package org.rut.util.algorithm; ]$StbBP  
{G+pI2^  
import org.rut.util.algorithm.support.BubbleSort; rT2gX^Mj&  
import org.rut.util.algorithm.support.HeapSort; d"1DE  
import org.rut.util.algorithm.support.ImprovedMergeSort; .)7r /1o  
import org.rut.util.algorithm.support.ImprovedQuickSort; nj (/It  
import org.rut.util.algorithm.support.InsertSort; 6%p$C oR  
import org.rut.util.algorithm.support.MergeSort; 98%M`WY  
import org.rut.util.algorithm.support.QuickSort; ]y4(WG;:  
import org.rut.util.algorithm.support.SelectionSort; H9x,C/r,  
import org.rut.util.algorithm.support.ShellSort; QJcaOXyMS  
Y\.d s%G  
/** 3H_mR j9th  
* @author treeroot >d`XR"_e  
* @since 2006-2-2 nPW?DbH +  
* @version 1.0 JH%^FF2  
*/ t3#My2=  
public class SortUtil { 0g-bApxz*&  
public final static int INSERT = 1; b.`<T "y  
public final static int BUBBLE = 2; JQ>GKu~  
public final static int SELECTION = 3; qfO=_z ES  
public final static int SHELL = 4; Zy}Qc")Z  
public final static int QUICK = 5; WcCJ;z:S?k  
public final static int IMPROVED_QUICK = 6; x}g5  
public final static int MERGE = 7; K/2k/\Jk[_  
public final static int IMPROVED_MERGE = 8; ')d&:K*M  
public final static int HEAP = 9; -/#VD&MJO=  
7j>NUx=j3  
public static void sort(int[] data) { gaK m`#  
sort(data, IMPROVED_QUICK); <Rs#y:  
} pJ` M5pF  
private static String[] name={ g> lJZD@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L|y4u;-Q  
}; K3jPTAw=#  
r'kUU] j9  
private static Sort[] impl=new Sort[]{ iqzl(9o.D  
new InsertSort(), Qy)+YhE  
new BubbleSort(), dLtSa\2Hn  
new SelectionSort(), TZ`@pDi  
new ShellSort(), *]ROUk@K=  
new QuickSort(), 3:">]LMi  
new ImprovedQuickSort(), KGMX >t'  
new MergeSort(), IETdL{`~  
new ImprovedMergeSort(), O*hd@2hd  
new HeapSort() e&Z\hZBb  
}; 4H7 3a5f  
?4X8l@fR  
public static String toString(int algorithm){ HT]v S}s  
return name[algorithm-1]; |G2hm8 Y  
} @/S6P-4  
=j)y.x(  
public static void sort(int[] data, int algorithm) { hjuzVOE|W  
impl[algorithm-1].sort(data); u N%RB$G  
} %5N;SRtv  
[C GFzxz$  
public static interface Sort { T Y|5O! <  
public void sort(int[] data); 9n$0OH /q  
} #n=b*.  
S(7_\8 h  
public static void swap(int[] data, int i, int j) { /PP\L](  
int temp = data; TBfX1v|Z)  
data = data[j]; 5:jbd:o  
data[j] = temp; ~<M/<%o2*  
} Yp8~wdm  
} ; Q-f6)+&  
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