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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。 'B6H/d>  
插入排序: ?.ihWbW_  
6Ymk8.PF  
package org.rut.util.algorithm.support; }rZ=j6Z  
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import org.rut.util.algorithm.SortUtil; rNC3h"i\  
/** ra2q. H  
* @author treeroot D9C; JD  
* @since 2006-2-2 dtl<  
* @version 1.0 dD<kNa}2  
*/ }!Lr!eALr  
public class InsertSort implements SortUtil.Sort{ '=* 5C{  
>C3 9`1  
/* (non-Javadoc) [1CxMk~"[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .utL/1Ej  
*/ )^sfEYoA  
public void sort(int[] data) { \ y",Qq?  
int temp; oP 0j>i,"&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); )~(_[='  
} yqI|BF`  
} ~A4WuA  
} CNYchE,}  
uu.Nq*3  
} e)"cm;BJ^P  
Lr:K0A.Ch  
冒泡排序: xII!2.  
]XyJ7esg  
package org.rut.util.algorithm.support; i`L66uV  
{rLOAewr  
import org.rut.util.algorithm.SortUtil; ;A!i V |  
*2;3~8Y  
/** L 3@wdC ~0  
* @author treeroot c= u ORt>  
* @since 2006-2-2 mH .I!  
* @version 1.0 +8I0.,'  
*/ a!]%@A6p  
public class BubbleSort implements SortUtil.Sort{ 7yl'!uz)9  
92Iv'(1ba  
/* (non-Javadoc) "O "@HVF@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -',Y;0b%  
*/ h%S#+t(Bf  
public void sort(int[] data) { -wRzMT19MG  
int temp; d*HAKXd&:j  
for(int i=0;i for(int j=data.length-1;j>i;j--){ JH#+E04#  
if(data[j] SortUtil.swap(data,j,j-1); N>Y3[G+  
} iwJgU b  
} ^)~M,rW8c  
} %C<eR_  
} @oNrR$7  
ERjf.7)d  
} D(|$6J 0  
5Ncd1  
选择排序: iI0'z=J  
hd-ds~ve  
package org.rut.util.algorithm.support; "(qO}&b>  
my6T@0R  
import org.rut.util.algorithm.SortUtil; (eP)>G]  
t:7jlD!d  
/** k$!&3Rh  
* @author treeroot Rw`s O:eZ  
* @since 2006-2-2 CuNHDYQ&3  
* @version 1.0 Ip x:k+J  
*/ ZT#G:a  
public class SelectionSort implements SortUtil.Sort { ><qE5D[  
1S:H!h3  
/* :9Pqy pd+  
* (non-Javadoc) Fu$sfq  
* 'P#I<?vB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9nE%r\H  
*/ 5hMiCod  
public void sort(int[] data) { )j'b7)W\  
int temp; &IYkeGQr  
for (int i = 0; i < data.length; i++) { }I]q$3 .  
int lowIndex = i; {5h_$a!TaU  
for (int j = data.length - 1; j > i; j--) { (%Rs&/vU~  
if (data[j] < data[lowIndex]) { ~fe0Ba4  
lowIndex = j; !k63 `(Ti  
} oL;/Qan  
} 9HP--Z=  
SortUtil.swap(data,i,lowIndex); }s[/b"%y  
} ]\U'_G2]  
} \Wk$>?+#@  
JV>OmUAk  
} Pt+_0OsR  
kn.z8%^(  
Shell排序:  M > <   
V*~5*OwB  
package org.rut.util.algorithm.support; tG-MC&;=  
2RCnk&u  
import org.rut.util.algorithm.SortUtil; rIb{=';  
:.,I4>b2  
/** ghl9gFFj  
* @author treeroot .^23qCs  
* @since 2006-2-2 AdNsY/Y(  
* @version 1.0 B|&<  
*/ pifgt  
public class ShellSort implements SortUtil.Sort{ Fh'Jb*|Q  
mq L+W  
/* (non-Javadoc) <#-ERQw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )j]RFt  
*/ Lnzhs;7L  
public void sort(int[] data) { ;Mz]uk  
for(int i=data.length/2;i>2;i/=2){ 7Fp2=j  
for(int j=0;j insertSort(data,j,i); X)~-MY*p  
} iu'yB  
} JY,+eD  
insertSort(data,0,1); 4/4IZfznX  
} I}X8-WFB  
;z68`P-  
/** =3'wHl  
* @param data _u0dt) $  
* @param j h| Ih4  
* @param i Sa0\9 3oa  
*/ 0Ju{6x(|  
private void insertSort(int[] data, int start, int inc) { >Vvc55z  
int temp; Evc 9k  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); &}r932  
} KB^IGF  
} 5eYCnc9  
} 1^COR+>L  
?=l(29tH  
} So:89T  
!v-(O"a  
快速排序: y}VKFRky  
iq#Z\Y(  
package org.rut.util.algorithm.support; T1E=<q4  
- M]C-$  
import org.rut.util.algorithm.SortUtil; 9SPu 4i  
|Bid(`t.  
/** 0czy:d,M%  
* @author treeroot LYX+/@OU2  
* @since 2006-2-2 >Ry4Cc  
* @version 1.0 OQq7|dZu  
*/ F2&KTK  
public class QuickSort implements SortUtil.Sort{ G>Q{[m$  
L`\ILJz  
/* (non-Javadoc) 6T-(GHzfHJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #L"h >,b  
*/ Buo1o&&  
public void sort(int[] data) { L4!$bB~L-  
quickSort(data,0,data.length-1);  7;XdTx  
} _AFgx8  
private void quickSort(int[] data,int i,int j){ jHd~yCq  
int pivotIndex=(i+j)/2; pr2d}~q4{  
file://swap AXyuXB  
SortUtil.swap(data,pivotIndex,j); SG~R!kN}Q  
fKfi   
int k=partition(data,i-1,j,data[j]); ,O2F}5|;  
SortUtil.swap(data,k,j); ;23F8M%wH  
if((k-i)>1) quickSort(data,i,k-1); /mb| %U]~  
if((j-k)>1) quickSort(data,k+1,j); *M="k 1P1  
^^Ius ]  
} +m1edPA[  
/** O@[q./VV,  
* @param data z|9 ^T@)  
* @param i Na=q(OKN  
* @param j ukw'$Yt2  
* @return dL"v*3Fy  
*/ ()7=(<x{  
private int partition(int[] data, int l, int r,int pivot) { b7$?'neH/.  
do{ GXAcy OV  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); G -;Yua2\  
SortUtil.swap(data,l,r); eaI&DP  
} rg`"m  
while(l SortUtil.swap(data,l,r); g$< @!  
return l; 3Ry?{m^  
} Eb.{M  
D@2Tx  
} *mYec~  
NmeTp?)m  
改进后的快速排序: { "/@,!9rJ  
&t4j px  
package org.rut.util.algorithm.support; #hai3>9|B  
*P_TG"^{W  
import org.rut.util.algorithm.SortUtil; #i~.wQ $1  
t0wLj}"U  
/** ;a68>5Lm*  
* @author treeroot ^,?]]=mE  
* @since 2006-2-2 Tj>~#~  
* @version 1.0 5!?><{k=%  
*/ MOj 0"x)  
public class ImprovedQuickSort implements SortUtil.Sort { RY*6TYX!  
2qN6{+]  
private static int MAX_STACK_SIZE=4096; 6OVAsmE  
private static int THRESHOLD=10; r:u5+A  
/* (non-Javadoc) 39u!j|VH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \ Xuu|]  
*/ 50CU|  
public void sort(int[] data) { N?~K9jGx(  
int[] stack=new int[MAX_STACK_SIZE]; ><$hFrR!  
-tDmzuD6  
int top=-1; &359tG0@P  
int pivot; ?p/i}28=y  
int pivotIndex,l,r; [/#;u*n  
s7=]!7QGS!  
stack[++top]=0; n2$*Z6.G  
stack[++top]=data.length-1; 8TuOf(qE  
wJ+"JQY.J+  
while(top>0){ lqu1H&  
int j=stack[top--]; f4uK_{  
int i=stack[top--]; ]F-{)j  
$NqT ={!  
pivotIndex=(i+j)/2; T#T!a0  
pivot=data[pivotIndex]; M,6m*  
h4ZrD:D0\  
SortUtil.swap(data,pivotIndex,j); #Jg )HU9  
1J^{h5?lU  
file://partition xez~Yw2  
l=i-1; %<K`d  
r=j; !K_%@|:7%  
do{ 3<?#*z4]_  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); M,:GMO:?a  
SortUtil.swap(data,l,r); l9#vr  
} a&|aK+^8;  
while(l SortUtil.swap(data,l,r); y1f&+y9e  
SortUtil.swap(data,l,j); Q-(twh  
jF{zcYU  
if((l-i)>THRESHOLD){ WM:we*k8h  
stack[++top]=i; YG<?|AS/  
stack[++top]=l-1; )9J&M6LX  
} e<>(c7bF  
if((j-l)>THRESHOLD){ mM1\s>o  
stack[++top]=l+1; b?qtTce  
stack[++top]=j; BY6QJkI9x  
} z1_\P) M  
$D\SueZ  
} nO2-fW:9]  
file://new InsertSort().sort(data); 4w\cS&X~C  
insertSort(data); r@^h,  
} \A Y7%>  
/** K6{{\r  
* @param data ;)~loa1\  
*/ b\F(.8  
private void insertSort(int[] data) { -# |J  
int temp; +hqsIx  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ZWxq<& Cg  
} },e f(  
} .{*V^[.  
} fXEF]C  
SZea[~ &  
} hj4Kv  
e@F9'z4  
归并排序: *O+G}_}  
?n8gB7(FA  
package org.rut.util.algorithm.support; 1zl6Rwk^o  
EQET:a:g  
import org.rut.util.algorithm.SortUtil; ng;,;o.  
%c*azo.  
/** |Qo;=~7  
* @author treeroot ]4ya$%A  
* @since 2006-2-2 M8oI8\6[  
* @version 1.0 Uo#% f+t  
*/ qe8dpI;  
public class MergeSort implements SortUtil.Sort{ T XWi5f[  
b7^VWX%  
/* (non-Javadoc) y+hC !-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) za `  
*/ l\vtz5L  
public void sort(int[] data) { _=Ed>2M)no  
int[] temp=new int[data.length]; &.,ZU\`zT  
mergeSort(data,temp,0,data.length-1); &9g4/c-?$  
} n [H3b}  
+1zCb=;!{  
private void mergeSort(int[] data,int[] temp,int l,int r){ q$(@  
int mid=(l+r)/2; \BOZhXfl'  
if(l==r) return ; nw){}g  
mergeSort(data,temp,l,mid); n a,j  
mergeSort(data,temp,mid+1,r); B{^o}:e  
for(int i=l;i<=r;i++){ Dm?>U1{   
temp=data; 9=p^E#d  
} [#S}L(  
int i1=l; [4KW64%l  
int i2=mid+1; rnz9TmN:*1  
for(int cur=l;cur<=r;cur++){ 9tvLj5~  
if(i1==mid+1) Z6F>SL  
data[cur]=temp[i2++]; L s6P<"V  
else if(i2>r) TO7%TW{L  
data[cur]=temp[i1++]; J*?BwmD'8  
else if(temp[i1] data[cur]=temp[i1++]; eY^;L_7}p  
else l=G=J(G  
data[cur]=temp[i2++]; 0vbiq  
} i>#[*.|P  
} PYX]ld.E  
R{uq8NA- W  
} OoL#8R  
k$1ya7-@  
改进后的归并排序: 69AgPAv<k  
GInU7y904  
package org.rut.util.algorithm.support; s\A"B#9r  
q|,cMPS3  
import org.rut.util.algorithm.SortUtil; $Ay j4|_-  
*<?or"P  
/** HH =sq  
* @author treeroot "X4L+]"$g  
* @since 2006-2-2 6yEYX'_  
* @version 1.0 ~Vq<nkWS  
*/ e]R`B}vO  
public class ImprovedMergeSort implements SortUtil.Sort { \-3\lZ3qj  
V9 qZa  
private static final int THRESHOLD = 10; )2t!= ua  
mGR}hsQpn  
/* }`M53>C,gQ  
* (non-Javadoc) kNqSBzg  
* {?tK]g#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9i4!^DM_  
*/ DtkY;Yl  
public void sort(int[] data) { ?0k(wiF  
int[] temp=new int[data.length]; @*Sge LeL  
mergeSort(data,temp,0,data.length-1); k{_ Op/k}V  
} NMq#D$T  
# LRN@?P  
private void mergeSort(int[] data, int[] temp, int l, int r) { v_-S#(  
int i, j, k; nk.m G ny  
int mid = (l + r) / 2; U(#)[S,  
if (l == r) #>~<rcE(  
return; >'IFr9&3  
if ((mid - l) >= THRESHOLD) Us4J[MW<  
mergeSort(data, temp, l, mid); V mxVE=l  
else {;.q?mj  
insertSort(data, l, mid - l + 1); ~<b/%l>h1  
if ((r - mid) > THRESHOLD) qFEGV+  
mergeSort(data, temp, mid + 1, r); sjh>i>t  
else ];BGJ5^j  
insertSort(data, mid + 1, r - mid); Nu !(7  
h%'4V<V  
for (i = l; i <= mid; i++) { [^wEKRt&  
temp = data; ~3k& =3d]  
} e1Kxqw7  
for (j = 1; j <= r - mid; j++) { (eX9O4  
temp[r - j + 1] = data[j + mid]; ,>"rcd  
} RiHOX&-7  
int a = temp[l]; !e~Yp0gX#  
int b = temp[r]; Jh1Q)05  
for (i = l, j = r, k = l; k <= r; k++) { Ki#({~  
if (a < b) { /Mk85C79  
data[k] = temp[i++]; 3V")~ m  
a = temp; [$; \1P/  
} else { z{h#l!Edh  
data[k] = temp[j--]; `J*~B  
b = temp[j]; L<'8#J[_5  
} 97"dOi!Wh  
} =+um:*a.  
} a*4"j2j v  
w)x`zVwO  
/** 3L2@C%  
* @param data .Q'/e>0  
* @param l Wxjv=#3  
* @param i w k1O*_76  
*/ Uh.XL=wY  
private void insertSort(int[] data, int start, int len) { mKWfRx*UdG  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (hywT)#+  
} >dH5n$Gb  
} ) V}q7\G~  
} *2MM   
} Q _}i8p '  
r()%s3$q  
堆排序: k~|nU  
a`}b'X:  
package org.rut.util.algorithm.support; C N9lK29F)  
iG<rB-"  
import org.rut.util.algorithm.SortUtil; Y-(),k_Q:  
?h`Ned0P  
/** 1$,t:/'-4  
* @author treeroot <0[{Tn  
* @since 2006-2-2 StUiL>9T#  
* @version 1.0 +3VDapfin  
*/ p%304oP6  
public class HeapSort implements SortUtil.Sort{ bS 'a)  
Mwdh]I,#  
/* (non-Javadoc) ZdQm& ?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >:l; W4j  
*/ oo\0X  
public void sort(int[] data) { YJgw%UVJ5m  
MaxHeap h=new MaxHeap(); JL~QE-pvD  
h.init(data); b`Wn98s  
for(int i=0;i h.remove(); z-G|EAON"/  
System.arraycopy(h.queue,1,data,0,data.length);  & y1' J  
} ?p{xt$<p  
0x'-\)v>3  
private static class MaxHeap{ i<D}"h|  
%hK?\Pg3=E  
void init(int[] data){ NN5V|# P}  
this.queue=new int[data.length+1]; &s!"pEZWck  
for(int i=0;i queue[++size]=data; G9\Bi-'ul  
fixUp(size); l ' ]d&  
} Wpom{-  
} 9kPwUAw  
oF/5mh__(K  
private int size=0; 9%\<x  
]d"4G7mu`l  
private int[] queue; H[o'j@0  
&]~z-0`$!  
public int get() { @+",f]  
return queue[1]; G'XlsyaWrb  
} bw#zMU^E  
4QWDuLu  
public void remove() {  9H*$3  
SortUtil.swap(queue,1,size--); &fYx0JT  
fixDown(1); b5YjhRimS  
} S~vbISl  
file://fixdown ZTG*|  
private void fixDown(int k) { ?uUK9*N  
int j; 8?']W\)  
while ((j = k << 1) <= size) { HMNjQ 1y  
if (j < size %26amp;%26amp; queue[j] j++; * [*#cMZ   
if (queue[k]>queue[j]) file://不用交换 6G"AP~|0  
break; c L*D_)?8  
SortUtil.swap(queue,j,k); *iF>}yhe  
k = j; puS'9Lpp  
} ,=l MtW  
} ^DHFP-G?e  
private void fixUp(int k) { L>{E8qv>w  
while (k > 1) { [!{*)4$6  
int j = k >> 1; 64}Oa+*s  
if (queue[j]>queue[k]) q`09   
break; )8oI  s  
SortUtil.swap(queue,j,k); wgSA6mQZ  
k = j; ,_`\c7@  
} KdF QlQaj  
} gcr,?rE<  
zQ xZR}'  
} AO;`k]0e  
9>psQ0IRvr  
} MoA2Cp;8X  
3y>.1  
SortUtil: u*[,W-R&  
KtHh--j`  
package org.rut.util.algorithm; D_O%[u}  
q /|<>s  
import org.rut.util.algorithm.support.BubbleSort; yY*OAC  
import org.rut.util.algorithm.support.HeapSort;  D@qq=M  
import org.rut.util.algorithm.support.ImprovedMergeSort; ]M{SM`Ya  
import org.rut.util.algorithm.support.ImprovedQuickSort; j._9;HifZ  
import org.rut.util.algorithm.support.InsertSort; ltt%X].[  
import org.rut.util.algorithm.support.MergeSort; >82Q!HaH  
import org.rut.util.algorithm.support.QuickSort; E?&dZR  
import org.rut.util.algorithm.support.SelectionSort; 'q1)W'  
import org.rut.util.algorithm.support.ShellSort; ?7G?uk]3,@  
N##T1 Qm)  
/** %'`Dd  
* @author treeroot pw:<a2.  
* @since 2006-2-2 2Iz@lrO6  
* @version 1.0 =,-80WNsX  
*/ FqsG#6|x  
public class SortUtil { >;o^qi_$  
public final static int INSERT = 1; $$ {ebt  
public final static int BUBBLE = 2; u4$d#0sA  
public final static int SELECTION = 3; ] V]~I.  
public final static int SHELL = 4; ci5ERv`  
public final static int QUICK = 5; 9{i6g+  
public final static int IMPROVED_QUICK = 6; 9R>A,x(  
public final static int MERGE = 7; ]*juF[r(  
public final static int IMPROVED_MERGE = 8; OjMDxG w  
public final static int HEAP = 9; NNutpA}s  
D.qbzJz  
public static void sort(int[] data) { t>&$_CSWK  
sort(data, IMPROVED_QUICK); %S>lPt  
} ]S,I}NP  
private static String[] name={ *v:+A E  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" }?*:uf  
}; L7n->8Qk  
|\?-k  
private static Sort[] impl=new Sort[]{ g_>)Q  
new InsertSort(), peGXU/5.I  
new BubbleSort(), ,Q(n(m'  
new SelectionSort(), bLu6|YB  
new ShellSort(), JS&l h  
new QuickSort(), S?hM  
new ImprovedQuickSort(), R9S7p)B  
new MergeSort(), XpOsnvW  
new ImprovedMergeSort(), 8 gOK?>'9  
new HeapSort() Dr(.|)hv[&  
}; I" sKlMD  
l:Ci'=  
public static String toString(int algorithm){ TKoO\\  
return name[algorithm-1]; }M'\s  
} 9jaYmY]~  
s26s:A3rh  
public static void sort(int[] data, int algorithm) { a+\ Gz  
impl[algorithm-1].sort(data); J;m[1Mae&  
} mg'-]>$$]  
3zWY%(8t4?  
public static interface Sort { _PNU*E%s<  
public void sort(int[] data); F1Egcx/$V  
} t47 f$gq  
34JkB+#a  
public static void swap(int[] data, int i, int j) { c)@M7UK[  
int temp = data; 4CX*  
data = data[j]; $6fHY\i#R  
data[j] = temp; \jq1F9,  
} * I'O_D  
} .vQ2w  
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