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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。 ~&73f7  
插入排序: HN{c)DIm]  
TD}<U8I8_  
package org.rut.util.algorithm.support; 'YNdrvz  
1" cv5U  
import org.rut.util.algorithm.SortUtil; 1w^wa_qx  
/** fj5 g\m  
* @author treeroot X&qx4 DL  
* @since 2006-2-2 !`Rh2g*o9  
* @version 1.0 /;Tc]  
*/ ([u|j  
public class InsertSort implements SortUtil.Sort{  XTJD>  
\7/yWd{N$  
/* (non-Javadoc) U+)p'%f;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y3dk4s77  
*/ L EgP-s W  
public void sort(int[] data) { FRrp@hE  
int temp; \@:,A]  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); YS9RfK/  
} NFs5XpZ~  
} N"ga -u  
} `R[ZY!=+  
&&X,1/  
} M`Er&nQs  
b]+F/@h~]  
冒泡排序: e /JQ #A  
%x$U(I}  
package org.rut.util.algorithm.support; #]@HsVXh7  
~-BF7f 6C  
import org.rut.util.algorithm.SortUtil; Yv;s3>r  
lrT2*$ w3  
/** \j>7x  
* @author treeroot 37/n"\4  
* @since 2006-2-2 `@h|+`h  
* @version 1.0 +tqErh?Al  
*/ aKbmj  
public class BubbleSort implements SortUtil.Sort{ %T{]l;5  
}Q/onB t  
/* (non-Javadoc) WVbrbs4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fSuykbZ  
*/ 7Gc{&hp*  
public void sort(int[] data) { \c}(rqT  
int temp; >d2Fa4u3  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5~JT*Ny  
if(data[j] SortUtil.swap(data,j,j-1); H$(bSw$  
} zN4OrG 0  
} Ic#xz;elM  
} JQ&t"`\k  
} u]J@65~'b  
*x"80UXL  
} ;Ba%aaHl  
LwH#|8F  
选择排序: 86r5!@WN  
KQdIG9O+6  
package org.rut.util.algorithm.support; <$(B[T  
^/2I)y]W0  
import org.rut.util.algorithm.SortUtil; /8cRPB.  
|7s2xRc  
/** x<NPp&GE  
* @author treeroot BX@Iq  
* @since 2006-2-2 Tu#< {'1$  
* @version 1.0 g7*)|FOb  
*/ QU|_ r2LM  
public class SelectionSort implements SortUtil.Sort { a:h<M^n049  
|"3<\$[  
/* 7;"0:eX  
* (non-Javadoc) 11[lc2  
* }{o !  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?{{w[U6NE  
*/ |cPHl+$nh.  
public void sort(int[] data) { o\IMYT  
int temp; k9^Hmhjw  
for (int i = 0; i < data.length; i++) { 0s#72}n  
int lowIndex = i; ,5}U H  
for (int j = data.length - 1; j > i; j--) { B`5<sW  
if (data[j] < data[lowIndex]) { g`7XE  
lowIndex = j; J!6FlcsZm  
} }h5i Tc  
} )+E[M!34  
SortUtil.swap(data,i,lowIndex); 1j<(?MT-  
} z^gJy,T  
} 1 DWoL}Z  
157_0  
} P3$eomX'  
<B"sp r&1  
Shell排序: kI{DxuTad  
4q$~3C[  
package org.rut.util.algorithm.support; a&y^Ps6=  
c7Z4u|G  
import org.rut.util.algorithm.SortUtil; C6_(j48&  
?Ec9rM\ze  
/** ;?-AFd\i  
* @author treeroot o`?rj!\  
* @since 2006-2-2 Y ::0v@&(  
* @version 1.0 lfGyK4:  
*/ ]n22+]D  
public class ShellSort implements SortUtil.Sort{ _"DS?`z6  
4`IM[DIG~  
/* (non-Javadoc) w2 )Ro:G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o u|emAV  
*/ uy'ghF  
public void sort(int[] data) { W? iA P  
for(int i=data.length/2;i>2;i/=2){ 5gszAvOO  
for(int j=0;j insertSort(data,j,i); H"P b)t  
} kX 1}/l  
} IUcL*  
insertSort(data,0,1); I$n= >s  
} d"$8-_K  
JE?p'77C  
/** V|7YRa@  
* @param data L+%"e w  
* @param j vh9* >[i  
* @param i =P- &dN  
*/ `+J Fvn!  
private void insertSort(int[] data, int start, int inc) { 1SQATUV  
int temp; !*IMWm>  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ~}/Dl#9R!  
} l^B.iB  
} E_HB[ 9  
} Qy,^'fSN  
c PGlT"  
} |m19fg3u  
PJnC  
快速排序: B[vj X"yg  
BxY t*b%  
package org.rut.util.algorithm.support; h$>F}n j  
! ,J# r  
import org.rut.util.algorithm.SortUtil; 73WSW/^F  
H#- 3  
/** I-7LT?r  
* @author treeroot ]6&NIz`:,  
* @since 2006-2-2 \>L,X_DL  
* @version 1.0 5/48w-fnZ  
*/ /YKd [RQ  
public class QuickSort implements SortUtil.Sort{ d1/emwH  
D)_ C@*q  
/* (non-Javadoc) Rd?}<L  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k_=SDm a  
*/ NzRvbj]  
public void sort(int[] data) { jXcJ/g(X3  
quickSort(data,0,data.length-1); OI R5QH  
} ]n ?x tI  
private void quickSort(int[] data,int i,int j){  w-jElV  
int pivotIndex=(i+j)/2; 0MQ= Rt  
file://swap 3JoY-  
SortUtil.swap(data,pivotIndex,j); z(PUoV:?  
ZTC>Ufu2!  
int k=partition(data,i-1,j,data[j]); .{Y;6]9[  
SortUtil.swap(data,k,j); ]wQ!ZG?)  
if((k-i)>1) quickSort(data,i,k-1); v1h(_NLI!  
if((j-k)>1) quickSort(data,k+1,j); sE9FT#iE  
?5|;3N/zt  
} dWY%bb  
/** &}ZmT>q`$  
* @param data D{|qP nE4  
* @param i E3L?6Qfx>  
* @param j I8F+Z  
* @return T}~TW26v  
*/ BT{;^Hp  
private int partition(int[] data, int l, int r,int pivot) { J=V  
do{ yr]ja-Y  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \}-4(Xdaq  
SortUtil.swap(data,l,r); y)f.ON36I  
} !`ol&QQ#  
while(l SortUtil.swap(data,l,r); \?bV\/GBR  
return l; D+8d^-:  
} w$gvgz  
wAMg"ImJ  
} ?0b-fL^^+l  
95;{ms[  
改进后的快速排序: [ X*p [  
Re%[t9 F&  
package org.rut.util.algorithm.support; -luQbGcT3  
"SF0b jG9C  
import org.rut.util.algorithm.SortUtil; Y~~Dg?e  
9#LMK 1ge  
/** ,OZ  
* @author treeroot .^YxhUH,G  
* @since 2006-2-2 p_r`"  
* @version 1.0 $QX$rN  
*/ ROO*/OOd  
public class ImprovedQuickSort implements SortUtil.Sort { ?7{U=1gb$  
{+N< 9(O  
private static int MAX_STACK_SIZE=4096; Z:b?^u4.  
private static int THRESHOLD=10; EZtU6kW"  
/* (non-Javadoc) n `j._G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~{x1/eH  
*/ Z[vx0[av&  
public void sort(int[] data) {  ` Xc7b  
int[] stack=new int[MAX_STACK_SIZE]; D?|D)"?qb  
 %zavSm"  
int top=-1; S :HOlJze  
int pivot; ,(jJOFf  
int pivotIndex,l,r; {1GJ,['qL  
`At.$3B  
stack[++top]=0; 2Gyq40  
stack[++top]=data.length-1; $CcjuPsK  
%wD#[<BGn>  
while(top>0){ *MJm:  
int j=stack[top--]; v|?@k^Ms  
int i=stack[top--]; j:9M${~  
HKN|pO3v  
pivotIndex=(i+j)/2; F?L]Dff  
pivot=data[pivotIndex]; t Zxx#v`  
-oD,F $Rb  
SortUtil.swap(data,pivotIndex,j); 6#w>6g4V~R  
G,8mFH  
file://partition RK# 6JfC3X  
l=i-1; !E70e$Th  
r=j; X<ex >sM  
do{ ;W|kc</R*  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); UhB +c  
SortUtil.swap(data,l,r); |T#cq!  
} 7j& t{q5  
while(l SortUtil.swap(data,l,r); D#jwI,n}x  
SortUtil.swap(data,l,j); 9#E *o~1  
3 ML][|TR  
if((l-i)>THRESHOLD){ OjU{r N*  
stack[++top]=i; fif;n[<  
stack[++top]=l-1; SA, ~q&  
} t@KTiJI ]  
if((j-l)>THRESHOLD){ +Z#=z,.^  
stack[++top]=l+1; K5>3  
stack[++top]=j; ]&'!0'3`  
} o.s'0xP]  
EPo)7<|>  
} Z bRRDXk!  
file://new InsertSort().sort(data); zzG=!JR  
insertSort(data); ;R$G.5h  
} Y A.&ap  
/** DJ ru|2  
* @param data &9jJ\+:7  
*/ (}#&HE<  
private void insertSort(int[] data) { b,~'wm8:A  
int temp; G/ x6zdk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2"0VXtv6  
} =^"Sx??V  
} o:8ns m  
} Z;+,hR((  
tpI/I bq  
} lM-\:Q!  
m:_#kfC&K"  
归并排序: v[CR$@Y  
G<Z}G8FW^  
package org.rut.util.algorithm.support; \Z*:l(  
jAQ{H  
import org.rut.util.algorithm.SortUtil; D5zc{) /  
92-Xz6Bo9  
/** L03I:IJ  
* @author treeroot K^{j$  
* @since 2006-2-2 b:1B >  
* @version 1.0 5nPvEN/  
*/ O:]']' /  
public class MergeSort implements SortUtil.Sort{ 1N/4W6  
? Fqh i  
/* (non-Javadoc) /%YW[oY{V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]t[%.^5#  
*/ mQj#\<*  
public void sort(int[] data) { 4vg,g(qi<  
int[] temp=new int[data.length]; O"9t,B>=i  
mergeSort(data,temp,0,data.length-1); zJ`u>:*$  
} ,7nu;fOT[  
(nqhX<T>  
private void mergeSort(int[] data,int[] temp,int l,int r){ jMT[+f  
int mid=(l+r)/2; r$<!?Z  
if(l==r) return ; -J]?M  
mergeSort(data,temp,l,mid); %6ckau1_;  
mergeSort(data,temp,mid+1,r); }3 /io0"D  
for(int i=l;i<=r;i++){ J~x]~}V&  
temp=data; t!D'ZLw  
} XT0-"-q  
int i1=l; |dIR v  
int i2=mid+1; ;5X6`GlS#5  
for(int cur=l;cur<=r;cur++){ AB=%yM7V*  
if(i1==mid+1) }#zL)+XI  
data[cur]=temp[i2++]; WO>A55Xya  
else if(i2>r) RqROl!6  
data[cur]=temp[i1++]; <h(AJX7wsD  
else if(temp[i1] data[cur]=temp[i1++]; fWP]{z`  
else ^%oH LsY9  
data[cur]=temp[i2++]; h(WlJCln  
} <n_? $ TJ  
} a- *sm~u  
su0K#*P&I  
} \:'GAByy  
;v8TT}R  
改进后的归并排序: zkt~[-jm}  
Dw=L]i :0v  
package org.rut.util.algorithm.support; 1P]J3o  
HSud$(w  
import org.rut.util.algorithm.SortUtil; Eu |/pH=:  
fMwF|;  
/** lB}?ey   
* @author treeroot s.(.OXD&  
* @since 2006-2-2 ,]wab6sY  
* @version 1.0 W *0!Z:?  
*/ tFcQ.1  
public class ImprovedMergeSort implements SortUtil.Sort { ( w4XqVT  
m.P F'_)/  
private static final int THRESHOLD = 10; ['QhC({  
$y;w@^  
/* kwi$%  
* (non-Javadoc) 'q}Ud10c  
* pyf'_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mR.j8pi  
*/ =u0=)\0@r  
public void sort(int[] data) { ZW M:Wj192  
int[] temp=new int[data.length]; r6j[C"@  
mergeSort(data,temp,0,data.length-1); !19T=p/:$  
} -cUW,>E  
mq{Z Q'  
private void mergeSort(int[] data, int[] temp, int l, int r) { )t~ad]oM  
int i, j, k; Tw\@]fw  
int mid = (l + r) / 2; 4=MVn  
if (l == r) '4{@F~fu  
return; 3SM'vV0[  
if ((mid - l) >= THRESHOLD) A._CCou  
mergeSort(data, temp, l, mid); xK8m\=#  
else +R?E @S  
insertSort(data, l, mid - l + 1); Gb2|e.z  
if ((r - mid) > THRESHOLD) hzbvR~rn  
mergeSort(data, temp, mid + 1, r); '3XOU.  
else l[ko)%7V  
insertSort(data, mid + 1, r - mid); Qc33C A  
yO-2.2h  
for (i = l; i <= mid; i++) { (muJ-~CJk  
temp = data; '"Cqq{*  
} ks$5$,^T2o  
for (j = 1; j <= r - mid; j++) { <F`9;WX  
temp[r - j + 1] = data[j + mid]; 02 FLe*zQ  
} HF*~bL  
int a = temp[l]; )fXxkOd  
int b = temp[r]; 5hqXMs  
for (i = l, j = r, k = l; k <= r; k++) { | {zka.sJ  
if (a < b) { `B?+1Gv  
data[k] = temp[i++]; @MQfeM-@  
a = temp; :~s"]*y  
} else { y**L^uvr  
data[k] = temp[j--]; Q3r]T.].h  
b = temp[j]; };2Lrz9<  
} !}A`6z  
} n2aUj(Zs=  
} y 2k's  
DvN_}h^nX  
/** UB] tKn  
* @param data depCqz@  
* @param l ldG8hK  
* @param i Ev#, }l+  
*/ ?@A@;`0Y  
private void insertSort(int[] data, int start, int len) { @#"K6  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~+\A4BW  
} b5p;)#  
} }+ W5Snx  
} J bima>  
} m:EYOe,w  
")boY/ P/w  
堆排序: q89yW)XG  
E=v4|/['N  
package org.rut.util.algorithm.support; ABE EJQ  
{3Gj rE  
import org.rut.util.algorithm.SortUtil; *~`oA~-Q  
qvsfU*wo?  
/** q9zeN:><  
* @author treeroot j%vxCs>  
* @since 2006-2-2 )W@  
* @version 1.0 L7II>^"B  
*/ ^wIP`dn  
public class HeapSort implements SortUtil.Sort{ "{{@N4^  
PzjIM!>  
/* (non-Javadoc) Ux,dj8=o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F&/ }x15  
*/ p<VW;1bt5  
public void sort(int[] data) { 4J[bh  
MaxHeap h=new MaxHeap(); v&^N+>p  
h.init(data); 7|m{hSc  
for(int i=0;i h.remove(); 8Z@O%\1x6  
System.arraycopy(h.queue,1,data,0,data.length); X7aj/:fXe  
} hO3C _}  
]~WIGl"g  
private static class MaxHeap{ 8BIPEY -I?  
Xp^>SSt:4  
void init(int[] data){ F7p`zf@O]  
this.queue=new int[data.length+1]; X bV?=  
for(int i=0;i queue[++size]=data; -r_Pp}s  
fixUp(size); =c[mch%E  
} d[(%5pw~zL  
} I7ySm12}  
Erl@] P4  
private int size=0; or` "{wop  
@[(%b{TE;  
private int[] queue; :Ea ]baM"  
{-IRX)m*  
public int get() { YkV-]%c  
return queue[1]; k/xNqN(  
} (w'k\y  
z Hj_q%A  
public void remove() { `O=LQ m`  
SortUtil.swap(queue,1,size--); 9/\=6v C|  
fixDown(1); X<"#=u(  
} g.EKdvY"%H  
file://fixdown 1 pzd  
private void fixDown(int k) { 9e 1KH'  
int j; \AR3DDm  
while ((j = k << 1) <= size) { 6 dCqS  
if (j < size %26amp;%26amp; queue[j] j++; 8j%lM/ v  
if (queue[k]>queue[j]) file://不用交换 2wh{[Q2f  
break; 5al44[  
SortUtil.swap(queue,j,k); cW $~86u"C  
k = j; 9;c]_zt  
} -E!V;Tgc%U  
} Kib?JRYt  
private void fixUp(int k) { l\-(li H  
while (k > 1) { fI(H :N  
int j = k >> 1; i `8Y/$aT  
if (queue[j]>queue[k]) A7 :W0Gg  
break; I."4u~[  
SortUtil.swap(queue,j,k); ~R W6;  
k = j; X"G3lG  
} t#J #DyY5  
} p&\x*~6u  
[26([H  
} 785Y*.p  
2|^bDg;W+u  
} HaamLu  
65A>p:OO  
SortUtil: e.g$|C^$m  
z//6yr  
package org.rut.util.algorithm; P(r}<SM  
80M4~'3  
import org.rut.util.algorithm.support.BubbleSort; `S7${0e  
import org.rut.util.algorithm.support.HeapSort; ?+#E&F  
import org.rut.util.algorithm.support.ImprovedMergeSort; ?3i-wpzMp  
import org.rut.util.algorithm.support.ImprovedQuickSort; M*c`@\  
import org.rut.util.algorithm.support.InsertSort; sXSZ#@u,WN  
import org.rut.util.algorithm.support.MergeSort; pKSVT  
import org.rut.util.algorithm.support.QuickSort; @{n2R3)k B  
import org.rut.util.algorithm.support.SelectionSort; <BN)>NqM  
import org.rut.util.algorithm.support.ShellSort; dTP$7nfe  
*o[*,1Pw  
/** L``K. DF  
* @author treeroot p>p=nLK  
* @since 2006-2-2 iyhB;s5Rgw  
* @version 1.0 0)lG~_q  
*/ !$5U\"M  
public class SortUtil { Zt[1RMO  
public final static int INSERT = 1; @le23+q  
public final static int BUBBLE = 2; gasl%&  
public final static int SELECTION = 3; "mE<r2=@  
public final static int SHELL = 4; Wc_Ph40C<_  
public final static int QUICK = 5; 8 YBsYKC  
public final static int IMPROVED_QUICK = 6; {/ _.]Vh  
public final static int MERGE = 7; $NWI_F4  
public final static int IMPROVED_MERGE = 8; r).S/  
public final static int HEAP = 9; Fx0<!_tY-  
!-4pr[C  
public static void sort(int[] data) { C`x>)wm:  
sort(data, IMPROVED_QUICK); 7b T5-=.  
} $wVY)p9Q  
private static String[] name={ c>3W1"  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap"  Wcn^IQ  
}; D058=}^HE  
.Isg1qrC  
private static Sort[] impl=new Sort[]{ : C;=<$  
new InsertSort(), ;xa]ke3]  
new BubbleSort(), _B|g)Rdv  
new SelectionSort(), #,qikKjt2  
new ShellSort(), TO)wjF_  
new QuickSort(), M|`%4vk>  
new ImprovedQuickSort(), .|{*.YE  
new MergeSort(), g;bkV q  
new ImprovedMergeSort(), }qXi;u))  
new HeapSort() *-Y|qS%  
}; BZx#@356N  
>UuLSF}  
public static String toString(int algorithm){ $0K9OF9$  
return name[algorithm-1]; ?P`]^#  
} te'<xfG  
d8 ve$X  
public static void sort(int[] data, int algorithm) { @v2kAOw[  
impl[algorithm-1].sort(data); n|L.d BAs]  
} obX|8hTL%  
_&JlE$ua7  
public static interface Sort { G(4:yK0  
public void sort(int[] data); G#CWl),=  
} tL;;Yt  
7IZ(3B<87t  
public static void swap(int[] data, int i, int j) { q^dI!93n|  
int temp = data; nS'0i&<{1  
data = data[j]; w];t]q|  
data[j] = temp; iygdX2  
} 88)0Xi|]KP  
} WohK,<Or  
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