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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。 -ucR@P]  
插入排序: Vt9o8naz  
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package org.rut.util.algorithm.support; \(5Bi3PA}  
AJRiwP|H+  
import org.rut.util.algorithm.SortUtil; gKIN* Od  
/**  e+@.n  
* @author treeroot A7|x|mW  
* @since 2006-2-2 kll ,^A  
* @version 1.0 /T 6Te<68^  
*/ 'XSHl?+q  
public class InsertSort implements SortUtil.Sort{ !yV)EJ:$  
15DlD`QV  
/* (non-Javadoc) {>brue*)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dQ<e}wtg  
*/ x}reeqn  
public void sort(int[] data) { Ja@ ?.gW  
int temp; C|QJQ@bj0  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); :+ "JPF4X  
} kYd=DY  
} rj5)b:c}  
} h 'is#X 6:  
^AUQsRA7PZ  
} #`"B YFV[E  
ab6D&  
冒泡排序: Mq6_Q07  
`]Vn[^?D  
package org.rut.util.algorithm.support; $,T3vX]<  
z_z '3d.r7  
import org.rut.util.algorithm.SortUtil; a1weTn*  
RZj06|r8  
/** <)@^TRS  
* @author treeroot _)# ~D*3  
* @since 2006-2-2 D,uT#P  
* @version 1.0 y|wR)\  
*/ ACgWT  
public class BubbleSort implements SortUtil.Sort{ &0-Pl.M  
H{Na'_sL  
/* (non-Javadoc) 27H4en; o=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) HsK5 2<  
*/ #- d-zV*  
public void sort(int[] data) { %5(v'/dQ  
int temp; G&7 } m  
for(int i=0;i for(int j=data.length-1;j>i;j--){ =E8Kacu%  
if(data[j] SortUtil.swap(data,j,j-1); T9'5V@  
} D/WzYc2h]  
} 9Mv4=k^7|4  
} Z ?w=-  
} +T7FG_  
89A04HX  
} Szlww  
_LZ 442  
选择排序: Je` w/Hl/U  
Q9t.*+  
package org.rut.util.algorithm.support; "S&1J8D|  
}HZ'i;~r|9  
import org.rut.util.algorithm.SortUtil; nSU7,K`PM  
W@FGU  
/** c<qJs-C4;  
* @author treeroot k${F7I(Tb  
* @since 2006-2-2 #Cz:l|\ i  
* @version 1.0 VH.}}RS%  
*/ ^EKf_w-v  
public class SelectionSort implements SortUtil.Sort {  N/AP8  
);x[1*e  
/* :SpPT  
* (non-Javadoc) !myF_cv}'  
* TC'^O0aZ_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N;e*eMFE  
*/ RjX#pb  
public void sort(int[] data) { .s@[-! p  
int temp; #.\X% !  
for (int i = 0; i < data.length; i++) { N" oJ3-~  
int lowIndex = i; %] 7.E  
for (int j = data.length - 1; j > i; j--) { ^KFwO=I@PV  
if (data[j] < data[lowIndex]) { HC ?XNR&  
lowIndex = j; V{kgDpB  
} cK+)MFOu+  
} CB?H`R pC.  
SortUtil.swap(data,i,lowIndex); 7PI|~Ifi  
} g/soop\:  
} px_%5^zRQ  
BRMR> ~k(  
} C/pu]%n@4  
^kpu9H  
Shell排序: &]/.=J  
<3Hu(Jx<O  
package org.rut.util.algorithm.support; iD9hqiX&  
MMUw+jM4  
import org.rut.util.algorithm.SortUtil; #Y<b'7yJ  
b ~FmX  
/** aD3Q-a[  
* @author treeroot 5($ '@u  
* @since 2006-2-2 N DV_/BI  
* @version 1.0 u@zBE? g  
*/ -^7n+ QX  
public class ShellSort implements SortUtil.Sort{ uc;QSVWGy8  
9Uh nr]J.  
/* (non-Javadoc) Y~M  H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h9J  
*/ S b3@7^  
public void sort(int[] data) { uw@|Y{(K r  
for(int i=data.length/2;i>2;i/=2){ jDc5p3D&[]  
for(int j=0;j insertSort(data,j,i); wD&b[i  
} J&6]3x  
} yf6&'Y{  
insertSort(data,0,1); \(bML#I  
} jVu3!{}  
/c1FFkq|K  
/** wA}+E)x/C  
* @param data .oo>NS  
* @param j Fc<+N0M{  
* @param i hY Nb9^  
*/ ysiBru[u  
private void insertSort(int[] data, int start, int inc) { oMi"X"C:q  
int temp; 4%k_c79>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); "2bCq]I0  
} ,Z I"+v  
} "GofQ5,|  
} 8~|PZ,oZ  
W;C41>^?/  
} ",T-'>h$2R  
1jozM"H7Q  
快速排序: <tg>1,C  
%/&?t`%H  
package org.rut.util.algorithm.support; &6 L{1  
Sf\mg4,  
import org.rut.util.algorithm.SortUtil; oa|nQ`[  
fhmq O0  
/** fm\IQqIK%  
* @author treeroot pJ5Sxgv{;  
* @since 2006-2-2 DFt1{qS8@u  
* @version 1.0 K(HP PM\  
*/ ,tL<?6_  
public class QuickSort implements SortUtil.Sort{ L[*Xrp;/&  
I.\fhNxHY  
/* (non-Javadoc) /^\6q"'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'DQKpk'  
*/ ZOG6  
public void sort(int[] data) { ]f q.r  
quickSort(data,0,data.length-1); j{9sn,<:  
} x AD:Z "  
private void quickSort(int[] data,int i,int j){ nV%1/e"5  
int pivotIndex=(i+j)/2; BS;_l"?  
file://swap b#^UP  
SortUtil.swap(data,pivotIndex,j); ; ,]T|> M  
GV([gs  
int k=partition(data,i-1,j,data[j]); v >71 ?te  
SortUtil.swap(data,k,j); *eytr#0B-  
if((k-i)>1) quickSort(data,i,k-1); [x 5T7=  
if((j-k)>1) quickSort(data,k+1,j); >LwZ"IE V  
T)]5k3{  
} Pz1pEyuL  
/** 2, ` =i  
* @param data [L,Tf_t^Y  
* @param i ,r{\aW@  
* @param j u%S&EuX  
* @return F%x8y  
*/ j']m*aM1>  
private int partition(int[] data, int l, int r,int pivot) {  `' 5(4j  
do{ (AdQ6eGMb  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Q%(LMq4UG  
SortUtil.swap(data,l,r); cSBYC_LU  
} n8[ sl]L  
while(l SortUtil.swap(data,l,r); +I7n6s\  
return l; &/4W1=>(  
} 'k#^Z  
ucyz>TL0  
} FMuM:%&J]  
{|6(_SM|  
改进后的快速排序: ZO+c-!%[(  
&gZ5dTj>  
package org.rut.util.algorithm.support; jYRwtP\  
#!KbqRt  
import org.rut.util.algorithm.SortUtil; .Kr?vD^nG  
v*1UNXU\  
/** >9(lFh0P  
* @author treeroot [C)-=.Xx)j  
* @since 2006-2-2 Be+vC=\K  
* @version 1.0 d:6?miMH]t  
*/ xGJ{_M  
public class ImprovedQuickSort implements SortUtil.Sort { o64&BpCK  
mV} peb  
private static int MAX_STACK_SIZE=4096; Q9Wa@gi|  
private static int THRESHOLD=10; 1j<=TWit  
/* (non-Javadoc) G_g~-[O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i!<,8e=  
*/ #n 7uw  
public void sort(int[] data) { "EQ-`b=I4  
int[] stack=new int[MAX_STACK_SIZE]; BM#cosV7%h  
"8aw=3A  
int top=-1; iNgHx[*?  
int pivot; XS]=sfN  
int pivotIndex,l,r; M& GA:`  
cTFyF)  
stack[++top]=0; rE-Xv. |  
stack[++top]=data.length-1; CEE`nn  
;Id%{1  
while(top>0){ 6)kF!/J  
int j=stack[top--]; 69 R8#M  
int i=stack[top--]; :Q=Jn?Gjb  
1GVJ3VXt  
pivotIndex=(i+j)/2; 74rz~ZM 5  
pivot=data[pivotIndex]; e;R5A6|  
B i?DmrH  
SortUtil.swap(data,pivotIndex,j); vDz)q  
Hm4:m$=p4  
file://partition +s c|PB  
l=i-1; J.mEOo!>  
r=j; HjV3PFg  
do{ K.n #;|  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L{;q^  
SortUtil.swap(data,l,r); qCn(~:  
} I3D8xl>P\  
while(l SortUtil.swap(data,l,r); q 4PRc<\^  
SortUtil.swap(data,l,j); hVI $r  
Y(ly0U}  
if((l-i)>THRESHOLD){ r>sk@[4h  
stack[++top]=i; @!&\Z[",  
stack[++top]=l-1; \ aQBzEX  
} ]L%qfy4  
if((j-l)>THRESHOLD){ &C<B=T"I  
stack[++top]=l+1; |_8- 3  
stack[++top]=j; ,2/qQD n/  
} a1B_w#?8  
0n|op:]BHM  
} bN@V=C3  
file://new InsertSort().sort(data); ZkkXITQkPM  
insertSort(data); @kn0f`  
} ^)conSm  
/** /i$E|[  
* @param data z,[4 BM  
*/ |AW[4Yn>  
private void insertSort(int[] data) { P*XLm  
int temp; K_',Gd4L  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); s={AdQ  
} hgX@?WWR  
} @dV'v{:,  
} G eN('0  
qi_[@da f?  
} {BKu'A  
33DP0OBL^  
归并排序: /Ou`$2H87  
*r$Yv&c,  
package org.rut.util.algorithm.support; k5]s~* ,0  
MbC7`Sp&i  
import org.rut.util.algorithm.SortUtil; #.UooFk+Y  
>nkd U  
/** ;(fDR8  
* @author treeroot >XjSVRO  
* @since 2006-2-2 NduvfA4  
* @version 1.0 lwaxj7  
*/ RxY ;'NY  
public class MergeSort implements SortUtil.Sort{ -mOSB(#bo  
A9ia[2[  
/* (non-Javadoc) wGD".CS0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E!&A[TlX\  
*/ -bu.Ar-#;h  
public void sort(int[] data) { bv$_t)Xh  
int[] temp=new int[data.length]; @T  
mergeSort(data,temp,0,data.length-1); :2{6Pa(eg  
} kG/:fP  
ifl`QZp_  
private void mergeSort(int[] data,int[] temp,int l,int r){ t6BggO"_u  
int mid=(l+r)/2; @*e|{;X]hy  
if(l==r) return ; S)of.Nq.;  
mergeSort(data,temp,l,mid); 3t5`,R1@t  
mergeSort(data,temp,mid+1,r); u;p{&\(]  
for(int i=l;i<=r;i++){ s3kHNDdC  
temp=data; H%> E6rVB  
} G1z[v3T  
int i1=l; $Mm=5 K%  
int i2=mid+1; l7]:b8  
for(int cur=l;cur<=r;cur++){ %>Z^BM<e  
if(i1==mid+1) l^w=b~|7=  
data[cur]=temp[i2++]; Nl,M9  
else if(i2>r) |} ;&xI  
data[cur]=temp[i1++]; X:bv ?o>Y  
else if(temp[i1] data[cur]=temp[i1++]; ~q4KQ&.!  
else %bgjJ`  
data[cur]=temp[i2++]; "i_I<?aGB  
} ~+}w>jIm{|  
} S#6{4x4  
Fxdu)F,~u  
} z %{Z  
e`zx#v  
改进后的归并排序: b}< T<  
{m~.'DU  
package org.rut.util.algorithm.support; \7rFfN3  
L|.q19b*  
import org.rut.util.algorithm.SortUtil; zgRZgVj  
:kz*.1  
/** 'g.9 goQ  
* @author treeroot *F0O*n*7W  
* @since 2006-2-2 s S(t }$  
* @version 1.0 )Kkw$aQI"d  
*/ b9Jah  
public class ImprovedMergeSort implements SortUtil.Sort { (|+Sbq(o  
ZDuP|" ^  
private static final int THRESHOLD = 10; (T:OZmEO.  
jA_w OR7$  
/* !D6   
* (non-Javadoc) / RU'~(  
* qpzzk9ba[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GSo&$T;B6  
*/ 2(M^8Bl  
public void sort(int[] data) { S`g:z b_  
int[] temp=new int[data.length]; 1.*VliY  
mergeSort(data,temp,0,data.length-1); &<hDl<E  
} ,(&jG^IpVJ  
4j^-n_T  
private void mergeSort(int[] data, int[] temp, int l, int r) { 4.il4Qqy}i  
int i, j, k; X^;[X~g  
int mid = (l + r) / 2; %;ZWYj`]n  
if (l == r) yN}upYxp  
return; FN jT?*  
if ((mid - l) >= THRESHOLD) " !43,!<  
mergeSort(data, temp, l, mid); \ldjWc<S  
else nF$n[:  
insertSort(data, l, mid - l + 1); ,ab_u@  
if ((r - mid) > THRESHOLD) W <.h@Rz+  
mergeSort(data, temp, mid + 1, r); bW03m_<M<1  
else ZS&>%G  
insertSort(data, mid + 1, r - mid); ETU.v*HT]  
{p3VHd#  
for (i = l; i <= mid; i++) { /]7FX"  
temp = data; CR8a)X4j#  
} Z3jh-{0  
for (j = 1; j <= r - mid; j++) { }*eiG  
temp[r - j + 1] = data[j + mid]; vxuxfi8x  
} ]gHxvT\E  
int a = temp[l]; K5l#dl_T  
int b = temp[r]; #m>Rt~(,S  
for (i = l, j = r, k = l; k <= r; k++) { T}')QC&wQ  
if (a < b) { /I Ql  
data[k] = temp[i++]; bz5",8Mn  
a = temp; /tIR}qK  
} else { YdsY2  
data[k] = temp[j--]; LF o{,%B  
b = temp[j]; 'lmZ{a6  
} { a2Y7\C/  
} 4cZig\mE;  
} w1Ar[ P  
},1**_#<Br  
/** vn oI.;H,  
* @param data "p]Fq,  
* @param l +!_?f'kv`  
* @param i 0u0<)gdX  
*/ ifA=qn0=}  
private void insertSort(int[] data, int start, int len) { cfZG3 "  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); KKMzhvf]#  
} epz'GN]V  
} 85;hs  
} Q I!c=:u  
} nT7{`aaQl  
[HEqMBX=;  
堆排序: VjZ_L_U}  
/rMxl(wD'  
package org.rut.util.algorithm.support; |GmV1hN  
#bRr|`  
import org.rut.util.algorithm.SortUtil; ;VQFz&Q$u  
JiFy.Pf  
/** W40GW  
* @author treeroot 1|K>V;C  
* @since 2006-2-2 #$\cRLPg  
* @version 1.0 ;=rMIi  
*/ [>`[1;aX  
public class HeapSort implements SortUtil.Sort{ mX@Un9k  
*7`N^e  
/* (non-Javadoc) O_ }ZSB8"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) - 0t  
*/ 'vgO`  
public void sort(int[] data) { NF?FEUoxz  
MaxHeap h=new MaxHeap(); iQ[0d.(A  
h.init(data); 9C$#A+~C  
for(int i=0;i h.remove(); `b(y 5Z  
System.arraycopy(h.queue,1,data,0,data.length); p)  x.Y  
} b0\'JZ  
B@ab[dm280  
private static class MaxHeap{ iEDZ\\,  
{?a9>g-BW  
void init(int[] data){ d<*4)MRN  
this.queue=new int[data.length+1]; qF9rY)ifm  
for(int i=0;i queue[++size]=data; 7Pt*V@DHS  
fixUp(size); $D,m o2I  
} doR'E=Z4h  
} +{%@kX<V_  
+ n1jP<[<N  
private int size=0; ^iaeY jI  
vBUl6EmWu  
private int[] queue; OtopA)  
?nm:e.S+?  
public int get() { o?G^=0T  
return queue[1]; +B*8$^,V)  
} >$.u|a  
Q@3.0Hf|{  
public void remove() { wf7<#jIq  
SortUtil.swap(queue,1,size--); `[+9n2j  
fixDown(1); 9"yBO`  
} =k4yWC5-  
file://fixdown /Vpd*obMB  
private void fixDown(int k) { cz_4cMgxu  
int j; lYd#pNN  
while ((j = k << 1) <= size) { kndP?#> p1  
if (j < size %26amp;%26amp; queue[j] j++; nG#lrYZw  
if (queue[k]>queue[j]) file://不用交换 ?e |'I"  
break; l+'1>T.I  
SortUtil.swap(queue,j,k); k&nhF9Y4  
k = j; _ Ko0  
}  FNZB M  
} _/[n/"gn  
private void fixUp(int k) { l<<G". ?  
while (k > 1) { 1B3,lYBM  
int j = k >> 1; mB(*)PwZ  
if (queue[j]>queue[k]) B0c}5V  
break; '-#6;_ i<  
SortUtil.swap(queue,j,k); UQ|zSalv,  
k = j; F"a^`E&  
} PVO9KWv**  
} *$(=I6b  
p71% -nV  
} RJs_ S  
(4V1%0  
} {d$S~  
X.0/F6U  
SortUtil: dE5DH~ldV  
;{|a~e?Y  
package org.rut.util.algorithm; H+zn:j@~L  
\Rn.ug  
import org.rut.util.algorithm.support.BubbleSort; AK<ZP?0  
import org.rut.util.algorithm.support.HeapSort; x7e  
import org.rut.util.algorithm.support.ImprovedMergeSort; D} 0>x~  
import org.rut.util.algorithm.support.ImprovedQuickSort; :C42yQAP  
import org.rut.util.algorithm.support.InsertSort; &QOob)  
import org.rut.util.algorithm.support.MergeSort; <.3@-z>w2,  
import org.rut.util.algorithm.support.QuickSort; tC+9W1o  
import org.rut.util.algorithm.support.SelectionSort; b* Ipg8n+  
import org.rut.util.algorithm.support.ShellSort; .<Z7 K @  
"xdJ9Z-B  
/** ^&uWAQohL  
* @author treeroot 3w )S=4lB  
* @since 2006-2-2 /2u;w !oi.  
* @version 1.0 v\Y;)/!  
*/ '$)Wp_  
public class SortUtil { mxHNK4/  
public final static int INSERT = 1; _}]o~  
public final static int BUBBLE = 2; 4\(;}M-R{  
public final static int SELECTION = 3; dh/:H/k kR  
public final static int SHELL = 4; kyJv,!};  
public final static int QUICK = 5; "!)8bTW  
public final static int IMPROVED_QUICK = 6; ,|I\{J #C  
public final static int MERGE = 7; We#*.nr{3Z  
public final static int IMPROVED_MERGE = 8; Oe9{`~  
public final static int HEAP = 9; 0jv9N6IM  
z>j%-3_1  
public static void sort(int[] data) { Y tGH>0}h  
sort(data, IMPROVED_QUICK); G%YD2<V  
} @6*<Xs =  
private static String[] name={ y<F$@  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }sy3M rb  
}; LWbWj ^  
MC#bo{Bq3-  
private static Sort[] impl=new Sort[]{ |iM*}Ix-  
new InsertSort(), ?vRz}hiy  
new BubbleSort(), Z-4A`@p  
new SelectionSort(), j~DoMP5Ls  
new ShellSort(), pq5)Ug  
new QuickSort(), e;3$7$n Pv  
new ImprovedQuickSort(), ECkfFE`  
new MergeSort(), |0f\>X I  
new ImprovedMergeSort(), qw87B!D  
new HeapSort() O8u"Y0$*w  
}; 2|}p&~G(  
_;01/V"q6  
public static String toString(int algorithm){ Q,\lS  
return name[algorithm-1]; KvilGh10  
} 8gC(N3/E"  
MPzqw)_-v  
public static void sort(int[] data, int algorithm) { (%0X\zvu/  
impl[algorithm-1].sort(data); d c&Qi_W  
} BpP\C!:^  
!+)$;`  
public static interface Sort { `*oLEXYN  
public void sort(int[] data); n^Z?u9VR  
} g8kw|BgnL  
/LSiDys  
public static void swap(int[] data, int i, int j) { 66L*6O4  
int temp = data; SgXXitg9+  
data = data[j]; zm8m J2s  
data[j] = temp; FeV=4tsy  
} UjKHGsDi4  
} D'nV &m  
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