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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。 . )XP\ m\  
插入排序: |+,[``d>"  
R3.*dqo$  
package org.rut.util.algorithm.support; {d3<W N  
h:bru:ef  
import org.rut.util.algorithm.SortUtil; kyw/LE3$-  
/** 1eS_ nLFw~  
* @author treeroot dR^"X3$  
* @since 2006-2-2 j+4H}XyE  
* @version 1.0 cW8\d  
*/ f2I6!_C!+  
public class InsertSort implements SortUtil.Sort{ s0u{d qP  
\Gp*x\<^Z  
/* (non-Javadoc) k0z&v <  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _~'+Qe_o$5  
*/ -Sv"gLB  
public void sort(int[] data) { 9nSWE W  
int temp; z;\dL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); CO+/.^s7}S  
} "`Ge~N[$A  
} @Yw,nQE)b  
} N 5zlT  
GwU?wIIj^  
} arK_oh0B  
uGU; Y'W)  
冒泡排序: 'T=~jA7SkT  
Ey[On^$  
package org.rut.util.algorithm.support; u+t$l^S  
q% >'4_  
import org.rut.util.algorithm.SortUtil; y@V_g'  
|]=2 }%1w  
/** revF;l6->C  
* @author treeroot w~R`D  
* @since 2006-2-2 QnouBrhO  
* @version 1.0 "6ECgyD+E!  
*/ oEz%={f  
public class BubbleSort implements SortUtil.Sort{ a&{X!:X  
;TiUpg</_3  
/* (non-Javadoc) ~ (On|h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s) O[t  
*/ 4\ c,)U}  
public void sort(int[] data) { t>)45<PEw  
int temp; QYb33pN|  
for(int i=0;i for(int j=data.length-1;j>i;j--){ S8Fmy1#  
if(data[j] SortUtil.swap(data,j,j-1); -5l6&Y   
} SAV%4  
} F1%vtk;2?  
} 0H_!Kg  
} `fXyWrz-k  
abNV4 ,M  
} V! |qYM.  
i`(^[h ?;  
选择排序: /.Nov  
HS>f1!  
package org.rut.util.algorithm.support; RPnRVJ&"Z  
5v\!]?(O;  
import org.rut.util.algorithm.SortUtil; _M[,! {C  
^vs=f 95  
/** :q<Z'EnW  
* @author treeroot )py{\r9X  
* @since 2006-2-2 e(F42;$$  
* @version 1.0 pg+[y<B  
*/ J~B 7PW  
public class SelectionSort implements SortUtil.Sort { bOp54WI-g  
OX:O^ (-r,  
/* iJxQB\x  
* (non-Javadoc) Nr<`Z  
* fEE /-}d  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gnp~OVDqfL  
*/ 1=7jz]t  
public void sort(int[] data) { >N\0"F7.  
int temp; ^taBG3P  
for (int i = 0; i < data.length; i++) { w6dFb6~R  
int lowIndex = i; d1@%W;qX!  
for (int j = data.length - 1; j > i; j--) { /"H`.LD.?  
if (data[j] < data[lowIndex]) { vKwQXR~C  
lowIndex = j; Xb !MaNm)  
} wv QMnE8\  
} o'~5pS(wq  
SortUtil.swap(data,i,lowIndex); ;Yfv!\^|  
} $ N']TN  
} /N>e&e[35\  
WnwhSr2  
} ]9=h%5Ji>  
"jecsqCgK0  
Shell排序: ,6 !rR,0  
:M{Y,~cP  
package org.rut.util.algorithm.support; oBq 49u1  
v1k)hFjPK  
import org.rut.util.algorithm.SortUtil; ffXyc2o  
K'iIJA*Sn  
/** u JR%0E7!  
* @author treeroot a9zw)A  
* @since 2006-2-2 )4?x5#  
* @version 1.0 22<0DhJ  
*/ ?T_3n:  
public class ShellSort implements SortUtil.Sort{ 0c.s -  
]Fvm 7V  
/* (non-Javadoc) Bx"7%[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =z?%;4'|  
*/ 3QSZ ZJ  
public void sort(int[] data) { FG3UZVUg9  
for(int i=data.length/2;i>2;i/=2){ A`}yBSb  
for(int j=0;j insertSort(data,j,i); ]Q "p\@\!  
} =z{JgD/  
} :{'k@J"| a  
insertSort(data,0,1); \ 6EKgC1  
} $qF0ltUQ  
{:c]|^w6  
/** gef6pfV  
* @param data '6$*YN&5  
* @param j ~.PO[hC  
* @param i  $rXh0g  
*/ b,P]9$Ut  
private void insertSort(int[] data, int start, int inc) { 9p 4"r^  
int temp; k"k J_(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); #QvMVy  
} nFX_+4V2  
} r4x3$M c  
} M,j(=hRJ/E  
C^t(^9  
} dX8hpQ  
?::NO Dg  
快速排序: *xf._~E  
xRu Fuf8  
package org.rut.util.algorithm.support; #X: 'aj98  
P+MA*:  
import org.rut.util.algorithm.SortUtil; =k3!RW'  
FZd.L6q  
/** j4FeSGa  
* @author treeroot L_Q#(in  
* @since 2006-2-2 O2{)WWOT  
* @version 1.0 W$JebW<z(  
*/ JO&JP3N1  
public class QuickSort implements SortUtil.Sort{ BY\:dx)mK  
s6 ( z  
/* (non-Javadoc) {)- .xG  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >}~#>Ru  
*/ gADmN8G=  
public void sort(int[] data) { U,/6;}  
quickSort(data,0,data.length-1); :J}t&t  
} 71#I5*8  
private void quickSort(int[] data,int i,int j){ 8,?v?uE  
int pivotIndex=(i+j)/2; jO9ip  
file://swap S gMrce<;  
SortUtil.swap(data,pivotIndex,j); |eoid?=  
0,*%vG?Q  
int k=partition(data,i-1,j,data[j]); |VOg\[f  
SortUtil.swap(data,k,j); zWw2V}U!  
if((k-i)>1) quickSort(data,i,k-1); uBg 8h{>  
if((j-k)>1) quickSort(data,k+1,j); @/ J [t  
6nDV1O5  
} ,O1O8TwUB0  
/** v,NHQyk  
* @param data `\=Gp'&Q+  
* @param i B bhfG64  
* @param j -7WW[ w  
* @return mtic>  
*/ "wH)mQnd  
private int partition(int[] data, int l, int r,int pivot) { YF#H Sf7  
do{ LiDvaF:@L!  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); s30 O@M))  
SortUtil.swap(data,l,r); W#_/ak$uF*  
} rh2LGuo4m  
while(l SortUtil.swap(data,l,r); Jsg I'  
return l; N;F)jO xsl  
} zHB_{(o7  
N5|Rmfo1  
} k1z$e*u&r  
@ \.;b9  
改进后的快速排序: L^kp8o^$  
VeiElU3  
package org.rut.util.algorithm.support; fbrp#G71y  
X{Yw+F,j  
import org.rut.util.algorithm.SortUtil; wbbqt0un  
K5 3MMH[q#  
/** {TSY|D2  
* @author treeroot gLD`wfZR  
* @since 2006-2-2 NQTnhiM7$  
* @version 1.0 bTmL5}n  
*/ ;sdN-mb  
public class ImprovedQuickSort implements SortUtil.Sort { i;\s.wrzH  
]7sx;KFv  
private static int MAX_STACK_SIZE=4096; ~%w~-O2  
private static int THRESHOLD=10; #~:P}<h  
/* (non-Javadoc) )\/ =M*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "yb WDWu  
*/ [um&X=1V8  
public void sort(int[] data) { .r|*Ch#;P  
int[] stack=new int[MAX_STACK_SIZE]; R5Yl1   
! U0z"  
int top=-1; "vF MSY  
int pivot; _68BP)nz>.  
int pivotIndex,l,r; ,1n >U?5  
<~Q i67I  
stack[++top]=0; MKGS`X]<J  
stack[++top]=data.length-1; BWPP5X9  
*}b]rjsj  
while(top>0){ SDJH;c0   
int j=stack[top--]; BW[5o3 i  
int i=stack[top--]; dFW=9ru+MQ  
IxSV?k   
pivotIndex=(i+j)/2; 6/ g%\ka  
pivot=data[pivotIndex]; +}7fg82)  
X'sEE  
SortUtil.swap(data,pivotIndex,j); <zfe }0  
o.:p_(|hI  
file://partition >mu)/kl  
l=i-1; |g)FA_#|<  
r=j; Ng<1Sd|MV  
do{ _uH9XGm  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); uZjI?Z.A  
SortUtil.swap(data,l,r); <zB*'m  
} GKtS6$1d#  
while(l SortUtil.swap(data,l,r); i S p  
SortUtil.swap(data,l,j); Rph%*~'  
?qHF}k|  
if((l-i)>THRESHOLD){ QEJGnl676  
stack[++top]=i; A=3HO\n5  
stack[++top]=l-1; J%v5d*$.  
} /lD?VE  
if((j-l)>THRESHOLD){ 66:ALFwd7  
stack[++top]=l+1; &~~s6   
stack[++top]=j; `7Ug/R<  
} )^;DGzG  
q(]f]Vl|0  
} -WR}m6yMr  
file://new InsertSort().sort(data);  WR.x&m>  
insertSort(data); F|eu<^"$ H  
} +uQB rG  
/** Q7Ij4  
* @param data Wc'Ehyi;  
*/ L7q |^`  
private void insertSort(int[] data) { Ti= 3y497S  
int temp; w=J4zkWk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [8]m8=n  
} C ?7X"~ ~  
} jXIEp01  
} s44iEh=V(I  
m6n hC  
} f'{>AKi=C  
LHi6:G"Y(  
归并排序: n(&*kfk  
9YC&&0 C@  
package org.rut.util.algorithm.support; Jp ]T9W\  
Q=+8/b  
import org.rut.util.algorithm.SortUtil; ^ }#f()  
- V=arm\#z  
/** h([0,:\  
* @author treeroot njMLyT($  
* @since 2006-2-2 0|C[-ppr  
* @version 1.0 <-)9>c:k  
*/ gMZ&,n4  
public class MergeSort implements SortUtil.Sort{ ?)cJZ>$!w  
i$O#%12l  
/* (non-Javadoc) _i@x@:_l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `pYE[y+  
*/ eTZ`q_LfI1  
public void sort(int[] data) { ay[+2"  
int[] temp=new int[data.length]; >eo8  
mergeSort(data,temp,0,data.length-1); D8/sz`N7Q  
} RndOm.TE  
f[@#7,2~M  
private void mergeSort(int[] data,int[] temp,int l,int r){ h.b+r~u  
int mid=(l+r)/2; tc/jY]'32  
if(l==r) return ; '3%*U*I  
mergeSort(data,temp,l,mid); >sV Bj(f  
mergeSort(data,temp,mid+1,r); r,nn~  
for(int i=l;i<=r;i++){ LW?2}`+  
temp=data; CjZ6NAHc  
} jr1Se9u D  
int i1=l; JS2!)aqc  
int i2=mid+1; &ps6s.K  
for(int cur=l;cur<=r;cur++){ EG1x  
if(i1==mid+1) Ph\F'xROe  
data[cur]=temp[i2++];  * D3  
else if(i2>r) ^V,@=QL3U  
data[cur]=temp[i1++]; K z^hQd  
else if(temp[i1] data[cur]=temp[i1++]; Vx(;|/:  
else 9jjL9f_3  
data[cur]=temp[i2++]; .Bijc G  
} <^'{ G  
} ke</x+\F  
<M>#qd@c  
} k7[)g]u  
@f'AWeJ2  
改进后的归并排序: OAyE/Q|  
,,2_/u\"/i  
package org.rut.util.algorithm.support; Ua!Odju*w  
Cj=J;^vf  
import org.rut.util.algorithm.SortUtil; N>T=L0`  
,dq`EsHg`M  
/** "p2u+ 8?  
* @author treeroot ,DQ >&_DK  
* @since 2006-2-2 '.xkn{c  
* @version 1.0 $q=hcu  
*/ s-o~@(r6  
public class ImprovedMergeSort implements SortUtil.Sort { )S"o{N3B  
J2x$uO{Bn  
private static final int THRESHOLD = 10; kfIbgya   
6q!7i%fK?  
/* 5vl2yN  
* (non-Javadoc) /XC;.dLA#  
* ,9+nfj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2}1!WIin  
*/ uFa-QG^Y{  
public void sort(int[] data) { gB'`I(q5.  
int[] temp=new int[data.length]; Zj5NWzj X  
mergeSort(data,temp,0,data.length-1); yA457'R1  
} M|aQ)ivh3  
j= p|'`  
private void mergeSort(int[] data, int[] temp, int l, int r) { i$2MjFC-  
int i, j, k; (p'/p  
int mid = (l + r) / 2; i,^>uf  
if (l == r) !k ;[^>  
return; 1j8/4:  
if ((mid - l) >= THRESHOLD) A89Y;_4y  
mergeSort(data, temp, l, mid); pPU2ar  
else R#r h  
insertSort(data, l, mid - l + 1); GWVEIZ  
if ((r - mid) > THRESHOLD) 4j2~"K  
mergeSort(data, temp, mid + 1, r); $XtV8  
else pyGFDB5_P  
insertSort(data, mid + 1, r - mid); QLxXp  
i@sCMCu6  
for (i = l; i <= mid; i++) { Z z{[Al{  
temp = data; %!1@aL]pQ  
} yKel|vM#  
for (j = 1; j <= r - mid; j++) { jLpgWt`8)E  
temp[r - j + 1] = data[j + mid]; Vu^Q4Z  
} jauc*347  
int a = temp[l]; gt(X!iN]  
int b = temp[r]; ,=x.aX Spz  
for (i = l, j = r, k = l; k <= r; k++) { w;g)Iy6x  
if (a < b) { h/fb<jIP1  
data[k] = temp[i++]; Uj y6vgU;  
a = temp; ~QQEHx\4zZ  
} else { {3_Ffsg`  
data[k] = temp[j--]; il 8A&`%  
b = temp[j]; j X^&4f  
} `*.r'k2R  
} )4VL m  
} }Etd#">  
l[ZQ7$kL  
/** IDL^0:eg<.  
* @param data !ds"88:5^  
* @param l [v>Z(  
* @param i AOq9v~)z-  
*/ Hj-<{#,  
private void insertSort(int[] data, int start, int len) { 3 tx0y  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `t/@ L:  
} v{\n^|=])  
} H@OrX  
} .T N`p*  
}  `i_L?C7  
@8x6#|D  
堆排序: Z n"TG/:  
8/kx3  
package org.rut.util.algorithm.support; P*nT\B  
NC[GtAPD3  
import org.rut.util.algorithm.SortUtil; 4N0W& Dy  
K[3D{=  
/** 2rE~V.)%  
* @author treeroot #E~WVTO w  
* @since 2006-2-2 d"e%tsj  
* @version 1.0 i32_ZBZ?y  
*/ R)DNFc:  
public class HeapSort implements SortUtil.Sort{ /d]V{I~6  
GhfUCW%  
/* (non-Javadoc) xs83S.fHg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2 |kH%  
*/ &>wce 5uV  
public void sort(int[] data) { OKLggim{  
MaxHeap h=new MaxHeap(); J=Y( *D7Q  
h.init(data); qyG636i  
for(int i=0;i h.remove(); Gh>fp  
System.arraycopy(h.queue,1,data,0,data.length); yADN_  
} TG%hy"k  
Lb3K};SIV  
private static class MaxHeap{ \i;~~;D  
po](6V  
void init(int[] data){ R4rm>zisVX  
this.queue=new int[data.length+1]; %JA&O  
for(int i=0;i queue[++size]=data; N@du.d:  
fixUp(size); ff5 Lwf{{  
} 5}l#zj  
} nAba =iW  
{-7yZ]OO$  
private int size=0; E( 4lu%  
:Kc0ak)<n  
private int[] queue; meVVRFQ2+  
!O-_Dp\#  
public int get() { BQJ`vIa  
return queue[1]; _*?"[TYfX  
} #* /W!UOu  
I3rnCd(  
public void remove() { He_(JXTP  
SortUtil.swap(queue,1,size--); ?e|:6a+[f  
fixDown(1); j'Q-*-3  
} JLV}Fw  
file://fixdown 1S.e5{  
private void fixDown(int k) { X.4ZLwX=  
int j; eYSGxcx  
while ((j = k << 1) <= size) { $^D(%  
if (j < size %26amp;%26amp; queue[j] j++; m ?"%&|  
if (queue[k]>queue[j]) file://不用交换 D>#v 6XI  
break; 41Q   
SortUtil.swap(queue,j,k); Y l3[~S  
k = j;  |ukdn2Q  
} sluZ-,zE  
} ~JRu MP  
private void fixUp(int k) { GTIfrqT  
while (k > 1) { IEr`6|X  
int j = k >> 1; ].T;x|  
if (queue[j]>queue[k]) 64?$TT  
break; =28H^rK{  
SortUtil.swap(queue,j,k); }(%}"%$  
k = j; gx9sBkoq5D  
} oYm{I ~"  
} e4H0<h }{  
>W]"a3E  
} vc{]c }  
AdS_-Cm  
} U)=Z&($T  
| xI_aYv*  
SortUtil: WHavz0knf[  
Y'%I at(z  
package org.rut.util.algorithm; T:~W.3  
LmdV@gR  
import org.rut.util.algorithm.support.BubbleSort; _$_CR\$  
import org.rut.util.algorithm.support.HeapSort; *_rGBW  
import org.rut.util.algorithm.support.ImprovedMergeSort; R.'Gg  
import org.rut.util.algorithm.support.ImprovedQuickSort; x[@3;_'K  
import org.rut.util.algorithm.support.InsertSort; [>9"RzEl  
import org.rut.util.algorithm.support.MergeSort; ]Tw6Fg1o>  
import org.rut.util.algorithm.support.QuickSort; b/}0 &VXo  
import org.rut.util.algorithm.support.SelectionSort; ea}KxLC`,  
import org.rut.util.algorithm.support.ShellSort; 7Bd_/A($  
a} 7KpKCD  
/** 6}lEeMRW  
* @author treeroot ^52R`{  
* @since 2006-2-2 P2RL\`<"  
* @version 1.0 oOSyOD  
*/ *G|]5  
public class SortUtil { kV9NFo22  
public final static int INSERT = 1; < io8 b|A  
public final static int BUBBLE = 2; %D0Ws9:|  
public final static int SELECTION = 3; "A`'~]/hE  
public final static int SHELL = 4; PH &ms  
public final static int QUICK = 5; 4\WkXwoqQO  
public final static int IMPROVED_QUICK = 6; b:I5poI3  
public final static int MERGE = 7; 1vudT&  
public final static int IMPROVED_MERGE = 8;  o*1`,n  
public final static int HEAP = 9; ;|,Y2?  
4c@F.I  
public static void sort(int[] data) { $ {eh52)`  
sort(data, IMPROVED_QUICK); /UyE- "S  
} , .F+x}  
private static String[] name={ $oj<yH<i  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" L<]P K4  
}; Z}StA0F_  
,R6$SrNcd  
private static Sort[] impl=new Sort[]{ y^BM*CI  
new InsertSort(), t4f\0`jN  
new BubbleSort(), gcF><i6  
new SelectionSort(), w2AWdO6  
new ShellSort(), swbD q  
new QuickSort(), kO"aE~  
new ImprovedQuickSort(), 7^X_tQf  
new MergeSort(), Rx2|VD  
new ImprovedMergeSort(), " N4]e/.V  
new HeapSort() SJ@_eir\o  
}; /omVM u  
e|y~q0Q$  
public static String toString(int algorithm){ #oY7v,x\  
return name[algorithm-1]; 1Xc%%j  
} JpiKZG@L  
3W0:0I  
public static void sort(int[] data, int algorithm) { =Ybu_>  
impl[algorithm-1].sort(data); 3|3lUU\I  
} m!(K  
<{uIB;P  
public static interface Sort { mj~CCokF{?  
public void sort(int[] data); !I&Sy]G  
} z0Hh8*  
P*]g*&*Y +  
public static void swap(int[] data, int i, int j) { p(%x&*)f  
int temp = data; K)OlCpHc  
data = data[j]; na)ceN2h  
data[j] = temp; dI|/Xm>  
} K2Zy6lGOZ  
} V" 73^  
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