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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。 KaGG4?=V  
插入排序: ^~Dmb2h  
5$w`m3>i(  
package org.rut.util.algorithm.support; leSR2os  
slWO\AYiO  
import org.rut.util.algorithm.SortUtil; ~KF>Jow?Y  
/** BQTibd  
* @author treeroot ;Q&|-`NK  
* @since 2006-2-2 Y4.t:Uzr  
* @version 1.0 zPKx: I3  
*/ }g\1JSJ%H  
public class InsertSort implements SortUtil.Sort{ drc]"6 k  
7-u['nFJ  
/* (non-Javadoc) l[D5JnWxt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )lsR8Hi8  
*/ 2Yt+[T*  
public void sort(int[] data) { #ovmX  
int temp; ExDv7St1(k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); !uwZ%Ux z  
} jR[3{ Reo  
} :s5wFumD  
} tUPdq0%t[  
$xl>YYEBMH  
} +>uiI4g  
-lNq.pp3-$  
冒泡排序: tB i16=  
R&`; C<6}D  
package org.rut.util.algorithm.support; l,n V*Z  
bXw!fYm&  
import org.rut.util.algorithm.SortUtil; [~[)C]-=  
RZg8y+jM  
/** 5!pof\/a  
* @author treeroot NEb M>1>^  
* @since 2006-2-2 [G/ti&Od^  
* @version 1.0 XzBnj7E  
*/ 5RysN=czA  
public class BubbleSort implements SortUtil.Sort{ <@puWm[p  
QxaW x  
/* (non-Javadoc) g} /efE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [_pw|BGp  
*/ MY]<^/Q  
public void sort(int[] data) { 6 ?C|pO  
int temp; ?mCino  
for(int i=0;i for(int j=data.length-1;j>i;j--){ X?8EPCk  
if(data[j] SortUtil.swap(data,j,j-1); qij<XNZU"&  
} I \DH  
} XFiP8aX<  
} &=-ZNWNo  
} qlJzXq{|`  
&eqeQD6  
} *49lM;  
[$<\*d/  
选择排序: ..5rW0lr  
(&)PlIi7  
package org.rut.util.algorithm.support; 8w Xnc%  
WX9ABh&5  
import org.rut.util.algorithm.SortUtil; -xXz}2S4  
:47bf<w|Y  
/** &# ?2zbZ  
* @author treeroot v, VCbmc  
* @since 2006-2-2 $xK2M  
* @version 1.0 'fGB#uBt  
*/ $gv3Up"U  
public class SelectionSort implements SortUtil.Sort { 7`c\~_Df_  
aA|<W g  
/* XJ3p<  
* (non-Javadoc) Ww[Xqmg  
* P,}cH;w6Ck  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fUg<+|v*  
*/ `v|w&ty*  
public void sort(int[] data) { 1ab_^P  
int temp; 1#D&cx6  
for (int i = 0; i < data.length; i++) { hN5?u:  
int lowIndex = i; m 3 Y@p$i5  
for (int j = data.length - 1; j > i; j--) { fQkfU;5  
if (data[j] < data[lowIndex]) { L xg,BZV  
lowIndex = j; '=Z]mi/aw  
} -*<4 hFb  
} T|%pvTIe  
SortUtil.swap(data,i,lowIndex); [@&0@/s*t'  
} K|{IX^3)V  
} ? +q(,P@*  
Wz%b,!  
} R. (fo:ve>  
0,z3A>C  
Shell排序: dx&!RK+  
LrGLIt`  
package org.rut.util.algorithm.support; =sYUzYm  
`Q@w*ta)  
import org.rut.util.algorithm.SortUtil; .T63:  
5vmc'Om  
/** WEnI[JGe  
* @author treeroot {PTB]D'  
* @since 2006-2-2 L2,.af6+  
* @version 1.0 ~v$1@DQ}  
*/ >]!8f?,  
public class ShellSort implements SortUtil.Sort{ cUH. ^_a  
,'nd~{pX"(  
/* (non-Javadoc) ZR," w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q9h 3/uTv  
*/ aWCZ1F  
public void sort(int[] data) { Mxmo}tt  
for(int i=data.length/2;i>2;i/=2){ ev'` K=n8  
for(int j=0;j insertSort(data,j,i); [B,w\PLub  
} l+vD`aJ3  
} wqnHaWd*  
insertSort(data,0,1); ^c-8~r|y,  
} <l.l6okp  
I""zg^Rq  
/** ms]r1x"  
* @param data 6/5Xy69:h  
* @param j ^xt@  
* @param i X7g@.Oy`  
*/ lA/.4"nN  
private void insertSort(int[] data, int start, int inc) { 0aRHXc2<  
int temp; LJc"T)>$`  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); rsaN<6#_^Q  
} sy]hMGH:3W  
} 4x)etH^o  
} 1o8C4?T&  
@BmI1  
} !S3^{l-  
"M !]t,?S  
快速排序: f'oO/0lx  
sOyL  
package org.rut.util.algorithm.support; v:1DNR4  
3-PqUJT$   
import org.rut.util.algorithm.SortUtil; CiNOGSlDj  
#>ob1b|  
/**  81}JX  
* @author treeroot +L,V_z  
* @since 2006-2-2 +7KRoF|  
* @version 1.0  ;H4s[#K  
*/ x##0s5Qn  
public class QuickSort implements SortUtil.Sort{ Uk'bOp  
E~y( @72)  
/* (non-Javadoc) Vm*E^ v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ib\_MNIb  
*/ Tfz _h~D  
public void sort(int[] data) { &|K9qa~)Y  
quickSort(data,0,data.length-1); `6:B0-r  
} {zTnE?(o`  
private void quickSort(int[] data,int i,int j){ z}a9%Fb  
int pivotIndex=(i+j)/2; fjd)/Gg  
file://swap =G9I7Y@  
SortUtil.swap(data,pivotIndex,j); rk-GQ#SKU  
fpa ~~E-  
int k=partition(data,i-1,j,data[j]); (uVL!%61k  
SortUtil.swap(data,k,j); sx n{uRF  
if((k-i)>1) quickSort(data,i,k-1); !kS/Ei  
if((j-k)>1) quickSort(data,k+1,j); |pG%]?A  
.nzN5FB U  
} G`Df'Yy  
/** ,(A $WT@e  
* @param data YvG=P<_xw  
* @param i TYKs2+S6  
* @param j 9Wv}g"KY0  
* @return q|g>;_  
*/ 8CUlE-R5  
private int partition(int[] data, int l, int r,int pivot) { 3oOr*N3R  
do{ -.OZ  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3c=>;g  
SortUtil.swap(data,l,r); 6]sP"  
} WS ^,@>A  
while(l SortUtil.swap(data,l,r); f.Y [2b  
return l; TjE'X2/  
} ,rS?^"h9  
*>h|<|T'  
} )~0TGy|  
mKBO<l{S  
改进后的快速排序: b+CJRB1  
lc$wjK[w[  
package org.rut.util.algorithm.support; "WzKJwFr  
ubv>* iO  
import org.rut.util.algorithm.SortUtil; Y$5uoq%p3A  
PbnAY{J  
/** rS!M0Hq>t  
* @author treeroot a*&(cn  
* @since 2006-2-2 q5G`q&O5  
* @version 1.0 {e5DQ21.  
*/ v`@NwH<r  
public class ImprovedQuickSort implements SortUtil.Sort { /Nkxb&  
*M ^ <oG  
private static int MAX_STACK_SIZE=4096; yv|`A2@9  
private static int THRESHOLD=10; f_2(`T#  
/* (non-Javadoc) K3iQ/j~aq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bC /Ql  
*/ 8'"=y}]H~  
public void sort(int[] data) { tZG l^mA"g  
int[] stack=new int[MAX_STACK_SIZE]; N%F4ug@i   
5eiKMKW[  
int top=-1; DNr*|A2<  
int pivot; <aLS4  
int pivotIndex,l,r; unih"};ou  
$^_6,uBM[  
stack[++top]=0; .e5d#gE0  
stack[++top]=data.length-1; IZLBv2m  
jV[;e15+  
while(top>0){ 8iTB  
int j=stack[top--]; xnf J ruT  
int i=stack[top--]; uBl&{$<  
9a]{|M9  
pivotIndex=(i+j)/2; \zc R7 5  
pivot=data[pivotIndex]; as(/ >p  
>=4('  
SortUtil.swap(data,pivotIndex,j); J5(^VKj  
{- &`@V  
file://partition S=gb y  
l=i-1; @QMy!y_K~m  
r=j; L~%7=]m  
do{ %!r.) Wx|2  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); pC]XbokES  
SortUtil.swap(data,l,r); Re2&qxE  
} Qvty;2$o@  
while(l SortUtil.swap(data,l,r);  T  5F)  
SortUtil.swap(data,l,j); %fnG v\uI  
Y1ks'=c>  
if((l-i)>THRESHOLD){ SpImd IpD  
stack[++top]=i; j9rxu$N+  
stack[++top]=l-1; ;80^ GDk~S  
} ! B92W  
if((j-l)>THRESHOLD){ OD9z7*E@  
stack[++top]=l+1; !,dp/5 V  
stack[++top]=j; }i{qRx"4  
} O}w%$ mq  
I tb_ H  
} zE<Iv\Q  
file://new InsertSort().sort(data); dr(-k3ex  
insertSort(data); 14"+ctq  
} 7{]dh+)  
/** d@ >i=l [  
* @param data 1Au+X3   
*/ J?dLI_{ <  
private void insertSort(int[] data) { ! Sw=ns7  
int temp; OIJT~Z}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v$D U q+  
} x5CMP%}d  
} ?% [~J  
} r ^\(M {  
"X^<g{]  
} fZj,Q#}D  
S43JaSw)  
归并排序: O ,9^R  
J&s$Wqf  
package org.rut.util.algorithm.support; q-+:1E  
Rpv[rvK'  
import org.rut.util.algorithm.SortUtil; 0-[naGz  
Lg~C:BN F  
/** C[}UQod0  
* @author treeroot >[Wjzg  
* @since 2006-2-2 7FJ4;HLQ  
* @version 1.0 c -PZG|<C[  
*/ TZ+ p6M8G  
public class MergeSort implements SortUtil.Sort{ )|vy}Jf7  
s[sv4hq  
/* (non-Javadoc) 14" 57Jt8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J jm={+@+  
*/ eZ+6U`^t  
public void sort(int[] data) { .>eRX%  
int[] temp=new int[data.length]; NhCucSU<K  
mergeSort(data,temp,0,data.length-1); P1Z"}Qw  
} /OWwC%tM/  
xnt)1Q  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;Y[D#Ja-  
int mid=(l+r)/2; |?#JCG  
if(l==r) return ; A[8m3L#k  
mergeSort(data,temp,l,mid); E]rXp~AZm  
mergeSort(data,temp,mid+1,r); u5Vgi0}A  
for(int i=l;i<=r;i++){ TIxOMYy  
temp=data; I`_I^C3  
} Y X^c}t}U  
int i1=l; [8a(4]4  
int i2=mid+1; e.skE>&  
for(int cur=l;cur<=r;cur++){ |$b8(g$s)  
if(i1==mid+1) y]0O"X-G  
data[cur]=temp[i2++]; GdcXU:J /  
else if(i2>r) >x JzV  
data[cur]=temp[i1++]; ~1%*w*  
else if(temp[i1] data[cur]=temp[i1++]; IJ&Lk=2E]  
else W-l+%T!  
data[cur]=temp[i2++]; xa@$cxt  
} A1INaL  
} = V2Rq(jH  
O-X(8<~H=  
} Xg96I: r'p  
:Y\ ~[Y  
改进后的归并排序: **L&I5Hhm  
p X{wEc6}  
package org.rut.util.algorithm.support; jwT` Z  
gDVsi  
import org.rut.util.algorithm.SortUtil; .@E5dw5  
DPjs? M<  
/** Lo%vG{yTr  
* @author treeroot -dixiJ=  
* @since 2006-2-2 s`_EkFw>Gl  
* @version 1.0 h/t;ZLUAZP  
*/ (<r)xkn  
public class ImprovedMergeSort implements SortUtil.Sort { tg@61V?>  
>jsY'Bm  
private static final int THRESHOLD = 10; U?sHh2*  
Tj#S')s8  
/* :31_WJ^  
* (non-Javadoc) ()IZ7#kL?  
* Ik$$Tn&;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) le\-h'D  
*/ *,4rYb7I w  
public void sort(int[] data) { $G`CXhbl  
int[] temp=new int[data.length]; \ saV8U7B  
mergeSort(data,temp,0,data.length-1); pOXI*0_g.  
} TvDSs])  
Qdq;C,}Ai.  
private void mergeSort(int[] data, int[] temp, int l, int r) { (s,&,I=@  
int i, j, k; KU,SAcfR7  
int mid = (l + r) / 2; c$ !?4z_.  
if (l == r) Qc3d<{7\~  
return; 7K\v=  
if ((mid - l) >= THRESHOLD) bRxI7 '  
mergeSort(data, temp, l, mid); Ze~P6  
else Uv(R^50>  
insertSort(data, l, mid - l + 1); ; R}>SS'  
if ((r - mid) > THRESHOLD) ^)~Smj^d  
mergeSort(data, temp, mid + 1, r); Wp>t\S~N  
else 'vd&r@N  
insertSort(data, mid + 1, r - mid); |@u2/U9  
O~*i_t*i9{  
for (i = l; i <= mid; i++) { f%,S::%Ea  
temp = data; D<6$@ZJ  
} reN\| ?0{  
for (j = 1; j <= r - mid; j++) { Xe %J{  
temp[r - j + 1] = data[j + mid]; (Lgea  
} v:P]o9Oj8  
int a = temp[l]; +d6onO{8  
int b = temp[r]; v1,#7s AW'  
for (i = l, j = r, k = l; k <= r; k++) { N.JR($N$  
if (a < b) { TRGpE9i  
data[k] = temp[i++]; H54RA6$>  
a = temp; x#EE_i/W  
} else { KSPa2>lz?  
data[k] = temp[j--]; gB'ajX=OA/  
b = temp[j]; y''~j<'  
} a yA;6Qt  
} w 0_P9g:  
} V1]GOmXz  
r >'tE7W9  
/** o}v<~v(  
* @param data ~#sD2b` 0  
* @param l `q-+r1u  
* @param i LeLUt<4~  
*/ jw:z2:0~  
private void insertSort(int[] data, int start, int len) { S[zvR9AW&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); $H@SXx  
} &s+l/;3  
} ~.W]x~X$  
} r'OqG^6JFN  
} SUc%dpXZa  
UH!(`Z\C  
堆排序: W~ ~'  
i<"lXu  
package org.rut.util.algorithm.support; 1,wcf,  
ddfGR/1X  
import org.rut.util.algorithm.SortUtil; ^aSb~lce  
-Q n-w3~&  
/** sG`x |%t  
* @author treeroot X<L=*r^C,=  
* @since 2006-2-2 >9{?&#]x  
* @version 1.0 SY +0~5E  
*/ f kZHy|m  
public class HeapSort implements SortUtil.Sort{ EB[T 5{  
G!Zb27u+  
/* (non-Javadoc) y!=,u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7[1Lh'u  
*/ SboHo({5VA  
public void sort(int[] data) { wb$uq/|  
MaxHeap h=new MaxHeap(); .g8*K "  
h.init(data); u"HGT=Nl  
for(int i=0;i h.remove(); b(0<,r8  
System.arraycopy(h.queue,1,data,0,data.length); Uj(0M;#%o+  
} 62sl6WWS3  
PQ 4mNjXN  
private static class MaxHeap{ RsZj  
sUG!dwqqd  
void init(int[] data){ 3(WijtH  
this.queue=new int[data.length+1]; +HS]kFH  
for(int i=0;i queue[++size]=data; eN=jWUoCh  
fixUp(size); 3YvKHn|V"  
} ~m6=s~Vn  
} gK rUv0&F  
= QBvU)Ki  
private int size=0; !/}3/iU  
pa!BJ]~  
private int[] queue; %+~\I\)1  
z5jw\jBD  
public int get() { %zcA|SefP  
return queue[1]; e(t}$Q=  
} 8FuxN2  
).71gp@&  
public void remove() { iww/s  
SortUtil.swap(queue,1,size--); *BsK6iVb  
fixDown(1); Ixa0;nxj  
} q^aDZzx,z  
file://fixdown YbZbA >|  
private void fixDown(int k) { 0fOhCxtL@  
int j; ]*=4>(F[  
while ((j = k << 1) <= size) { gA2Wo+\^bq  
if (j < size %26amp;%26amp; queue[j] j++; T`x|=}  
if (queue[k]>queue[j]) file://不用交换 {srP3ll P  
break; E#J})cPzw  
SortUtil.swap(queue,j,k); f!'i5I]  
k = j; fp [gKRSF  
} 4'O,xC  
} ?9~^QRLT  
private void fixUp(int k) { u}5CzV`  
while (k > 1) { {,%&}kd>  
int j = k >> 1; lb_N"90p  
if (queue[j]>queue[k]) OH t)z.  
break; i\sBey ND"  
SortUtil.swap(queue,j,k); >bW=oTFz  
k = j; ~+Gh{,f  
} WE) *~5  
} *~^63Nx!  
0>{ ]*  
} ?h}NL5a  
 i;O_B5 d  
} 3}|[<^$  
,\M77V  
SortUtil: Y ^+x<  
U,#~9  
package org.rut.util.algorithm; 2z-Nw <bA  
w/6X9d  
import org.rut.util.algorithm.support.BubbleSort; {'IO  
import org.rut.util.algorithm.support.HeapSort; 11oNlgY&  
import org.rut.util.algorithm.support.ImprovedMergeSort; kOydh(yE  
import org.rut.util.algorithm.support.ImprovedQuickSort; r07u6OA  
import org.rut.util.algorithm.support.InsertSort; DB|1Sqjsn  
import org.rut.util.algorithm.support.MergeSort; ^ptybVo  
import org.rut.util.algorithm.support.QuickSort; JN wI{  
import org.rut.util.algorithm.support.SelectionSort; kvwnqaX  
import org.rut.util.algorithm.support.ShellSort; iHPsRq!  
$*0-+h  
/** ^\}qq>_  
* @author treeroot H!IVbL`a{  
* @since 2006-2-2 9#z$GO|<  
* @version 1.0 q<:8{Y|  
*/ q A .9X4NQ  
public class SortUtil { z.8/[)  
public final static int INSERT = 1; TE Z%|5(]  
public final static int BUBBLE = 2; F vkyp"W3  
public final static int SELECTION = 3; S`kOtZ_N n  
public final static int SHELL = 4; Pxr/*X  
public final static int QUICK = 5; >PA*L(Dh%  
public final static int IMPROVED_QUICK = 6; 3F;C{P!  
public final static int MERGE = 7; G&*P*f1 S  
public final static int IMPROVED_MERGE = 8; 23?u_?+4i  
public final static int HEAP = 9; c>LP}PGk  
&>\;4E.O5  
public static void sort(int[] data) { *V2;ds.~  
sort(data, IMPROVED_QUICK); p~w] ~\  
}  vD#U+  
private static String[] name={ (=!At)O  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {[!<yUJ`S#  
}; !y d B,S  
d0>U-.  
private static Sort[] impl=new Sort[]{ ce;7  
new InsertSort(), HP8J\`  
new BubbleSort(), r XJx~ g  
new SelectionSort(), ga +, P  
new ShellSort(), ]d1'5F][H  
new QuickSort(), "-&K!Vfs  
new ImprovedQuickSort(), y RxrfAdS  
new MergeSort(), jSp&\Wjb  
new ImprovedMergeSort(), Qf~>5(,h  
new HeapSort() M {jXo%C  
}; uMQI Aapb  
dL0Q8d\^T  
public static String toString(int algorithm){ D>5)',D8xi  
return name[algorithm-1]; z206fF  
} ia5%  
vqeH<$WHvy  
public static void sort(int[] data, int algorithm) { *p(_="J,  
impl[algorithm-1].sort(data); $}&a*c>  
} \foThLx  
bN_e~z  
public static interface Sort { )k(K/m  
public void sort(int[] data); X~r9yl>  
} 1 m'.wh|  
o ]*yI[\  
public static void swap(int[] data, int i, int j) { x {NBhq(4  
int temp = data; G J%^hr`P  
data = data[j]; 0Q{lyu  
data[j] = temp; }h^ fX  
} 1K9.3n   
} v[ iJ(C_  
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