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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。 =Ee&da^MB  
插入排序: JHW "-b  
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package org.rut.util.algorithm.support; ylUrLQ\  
`0rd26Qro  
import org.rut.util.algorithm.SortUtil; &d9{k5/+\  
/** lackB2J9 A  
* @author treeroot ZkgV_<M|  
* @since 2006-2-2 LU+3{O5y  
* @version 1.0 +~St !QV%  
*/ Q.bXM?V)  
public class InsertSort implements SortUtil.Sort{ H1 2Fw'2  
m9)p-1y@5  
/* (non-Javadoc) ZjT,pOSyb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h,QKd>4:CF  
*/ vrl;"Fm+  
public void sort(int[] data) { Twh!X*uQ  
int temp; 3sc+3-TF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?8HHA: GP  
} D>|H 2  
} YW-usvl&  
} H!vax)%-\  
s.EI`*xylY  
} U6=..K!q  
3E7ULK  
冒泡排序: }{M#EP8q+  
R[Ll59-  
package org.rut.util.algorithm.support; YgKZ#?*  
V zBqjE_  
import org.rut.util.algorithm.SortUtil; |\w=u6jX  
h"lX 4  
/** <wZQc  
* @author treeroot QS0:@.}$E)  
* @since 2006-2-2 IOTR/anu  
* @version 1.0 8m5p_\&  
*/ %?LOs H   
public class BubbleSort implements SortUtil.Sort{ KuWWUjCE  
Z,`iO %W  
/* (non-Javadoc) e}mD]O}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J~=n`pW  
*/ Cv }Qwy  
public void sort(int[] data) { ekI2icD  
int temp; :iFIQpk  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5>VY LI  
if(data[j] SortUtil.swap(data,j,j-1); Hip&8NW  
} H&F9J ^rC  
} N03G>fZ  
} 0MV>"aV  
} rJFc({ 0  
Pa(^}n|  
} HfcL%b%G8  
~i@Y|38C  
选择排序: r~+\ Y"rM  
[FK<96.nt  
package org.rut.util.algorithm.support; Tq NadHQ  
b'P eH\h{  
import org.rut.util.algorithm.SortUtil; "dsU>3u  
xAafm<L@!  
/** }YjX3|8zL=  
* @author treeroot 6`!Fv-  
* @since 2006-2-2 ng:kA%! Q  
* @version 1.0 N+zKr/  
*/ UUF ;p2{f  
public class SelectionSort implements SortUtil.Sort { GQ*wc?f3  
:}r.  
/* ~)qtply  
* (non-Javadoc) 76>7=#m0u'  
* V<D.sd<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tyfTU5"x  
*/ _8Z_`@0  
public void sort(int[] data) { _FXZm50\g{  
int temp; ;^ La"m  
for (int i = 0; i < data.length; i++) { iS&l8@2a  
int lowIndex = i;  |?Frj  
for (int j = data.length - 1; j > i; j--) { ?6(I V]  
if (data[j] < data[lowIndex]) { [~kdPk  
lowIndex = j; ZeUvyIG  
} !iH-#B-  
} =1O<E  
SortUtil.swap(data,i,lowIndex); W3Dc r@Dy  
} -:Fe7c  
} ZIPl7tTw  
b8$gx:aJ>$  
} &=<x#h-  
_9tK[ /h  
Shell排序: S;~g3DC d  
/EibEd\  
package org.rut.util.algorithm.support; !lxTX  
L f"i !  
import org.rut.util.algorithm.SortUtil; h@:TpE+N  
6An9S%:_  
/** YoN*:jB<M  
* @author treeroot t<T[h2Wd  
* @since 2006-2-2 ?+g`HTY u  
* @version 1.0 } X^|$  
*/ d)@<W1;  
public class ShellSort implements SortUtil.Sort{ 'eo KZX+  
D\@m6=L  
/* (non-Javadoc) Oy<5>2^P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >w-;Z>3Q@  
*/ mNb ?*3\  
public void sort(int[] data) { /n5F(5<  
for(int i=data.length/2;i>2;i/=2){ <&&SX;  
for(int j=0;j insertSort(data,j,i); @%tRhG  
} uch>AuF:  
} ZAJp%   
insertSort(data,0,1); JC}f-%H?K  
} vKq^D(&cl  
"6R 5+  
/** V?P,&c?84  
* @param data {NPuu?&  
* @param j !ALKSiSl  
* @param i Rw6; Z  
*/ +$$$  
private void insertSort(int[] data, int start, int inc) { MZpK~c1`  
int temp; -29gL_dk.  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); %'xb%`t  
} R*oXmuOsYA  
} p}|.ZkyN  
} \S*$UE]uG  
b{d4xU8'  
} ZxG}ViS4I  
bae\Zk%`^  
快速排序: )mJf|W!Z#  
6ns! ~g@  
package org.rut.util.algorithm.support; yf?h#G%24  
c9\2YKo  
import org.rut.util.algorithm.SortUtil; 28hHabd|  
hY*0aZ|(  
/** Ja]?&j  
* @author treeroot Cv>o.Bp|  
* @since 2006-2-2 zP:cE  
* @version 1.0 '=E3[0W  
*/ :qR=>n=  
public class QuickSort implements SortUtil.Sort{ 2>]a)  
RQkyCAGx  
/* (non-Javadoc) @v}B6j b;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F,GN[f-  
*/ &(z fa&j|  
public void sort(int[] data) { zf.- I  
quickSort(data,0,data.length-1); 9'DtaTmGW  
} v[TYc:L=  
private void quickSort(int[] data,int i,int j){ BR v+.(S  
int pivotIndex=(i+j)/2; hH->%*  
file://swap -/ x W  
SortUtil.swap(data,pivotIndex,j); 2oZ9laJO  
(>=7ng^  
int k=partition(data,i-1,j,data[j]); vBvNu<v7te  
SortUtil.swap(data,k,j); 0G <hn8>  
if((k-i)>1) quickSort(data,i,k-1); a`E*\O'd  
if((j-k)>1) quickSort(data,k+1,j); Bi~:>X\[^6  
sVoW =4V8  
} <w>/^|]#  
/** '4OcZ/oI  
* @param data ?-OPX_i_  
* @param i F52B~@ .  
* @param j (X+s-4%  
* @return SQWafD  
*/ NQ|xM"MqD  
private int partition(int[] data, int l, int r,int pivot) { JI|6B  
do{ ukuo:P<a  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); "PH6e bm  
SortUtil.swap(data,l,r); C;Ic  
} RGD]8 mw  
while(l SortUtil.swap(data,l,r); a :HNg  
return l; Nf9fb?  
} 6<Hu8$G|  
,>LRa  
} DlyMJ#a  
+VU4s$w6  
改进后的快速排序: -Dzsa  
,Vd7V}t  
package org.rut.util.algorithm.support; BF8"rq}r0  
!asqr1/  
import org.rut.util.algorithm.SortUtil; jU=<r  
?mRE'#  
/** kGN||h  
* @author treeroot WW "i  
* @since 2006-2-2 b X)|MiWI  
* @version 1.0 Psa@@'w  
*/ uD>z@J-v  
public class ImprovedQuickSort implements SortUtil.Sort { vt]F U<  
O.k \]'  
private static int MAX_STACK_SIZE=4096; vz`@x45K  
private static int THRESHOLD=10; 8NimZ(  
/* (non-Javadoc) W7UtA.2LT  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $zkH|] zZ  
*/ 2H[)1|]l  
public void sort(int[] data) { SFjU0*B$  
int[] stack=new int[MAX_STACK_SIZE]; ua 8m;>R  
QLb MPS  
int top=-1; 8&}~'4[b[$  
int pivot; &1)xoZ'\  
int pivotIndex,l,r; kI*UkM-  
A%ywj'|z  
stack[++top]=0; K%{ad1$c  
stack[++top]=data.length-1; 5n:71$6[  
PDw{R]V+  
while(top>0){ y7zkAXhJ  
int j=stack[top--]; EIX\O6*  
int i=stack[top--]; @?2n]n6  
a&/HSf_G  
pivotIndex=(i+j)/2; x3p9GAd#  
pivot=data[pivotIndex]; <jd/t19DB  
UR>_)*  
SortUtil.swap(data,pivotIndex,j); ` %' z  
9[>Lp9l'  
file://partition yMIT(  
l=i-1; Uu2N9.5  
r=j; l L2-.!]R  
do{ nN{dORJlx  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ^!@*P,'I  
SortUtil.swap(data,l,r); pv$tTWk  
} f4]&pcK  
while(l SortUtil.swap(data,l,r); MTB@CP!u  
SortUtil.swap(data,l,j); h=f6~5l5  
{a4xF2  
if((l-i)>THRESHOLD){ }|He?[TR  
stack[++top]=i; SL*DK.  
stack[++top]=l-1; 5fq.*1f  
} i wz` x  
if((j-l)>THRESHOLD){ </w 7W3F  
stack[++top]=l+1; BD1K H;  
stack[++top]=j; T{ nQjYb?  
} OPJgIU%  
;qVG \wQq  
} -R@JIe_28f  
file://new InsertSort().sort(data); JFJIls  
insertSort(data); vU9~[I`^p  
} j&llrN  
/** p5qx=p~c  
* @param data %Ht ^yemQ  
*/ {fElto   
private void insertSort(int[] data) { p[;8  
int temp; 3#<'[TF00t  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); yr{5Rp05=  
} 45r|1<Ro  
} ~"5C${~{  
} zK /f$}  
\SzGzCJ  
} hqWPf  
6o9sR)c ?  
归并排序: xrX?ZJ  
x{QBMe`  
package org.rut.util.algorithm.support; lSs^A@s  
S^)WYF5  
import org.rut.util.algorithm.SortUtil; (-#rFO5~l  
mj,qQ=n;p  
/** F42TKPN^uu  
* @author treeroot # s,Y% Bce  
* @since 2006-2-2 ->Q`'@'|P  
* @version 1.0 xf[z EEt  
*/ K#iK6)tS  
public class MergeSort implements SortUtil.Sort{ u& AQl.u  
t{[gKV-b  
/* (non-Javadoc) \&# p1K(H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;4R =eI  
*/ 6S2r  
public void sort(int[] data) { N!.kq4$.  
int[] temp=new int[data.length]; %zRiLcAT  
mergeSort(data,temp,0,data.length-1); tu7+LwF7  
} P7cge  
+$(71#'y  
private void mergeSort(int[] data,int[] temp,int l,int r){ zuU Q."#i  
int mid=(l+r)/2; D8q3TyCj%  
if(l==r) return ; X9DM ^tt  
mergeSort(data,temp,l,mid); 0P3j+? N%  
mergeSort(data,temp,mid+1,r); 8H&_,;  
for(int i=l;i<=r;i++){ |K'Gw}fX/  
temp=data; l@~1CMyN  
} 8x!+tw7  
int i1=l; %_]=i@Y~  
int i2=mid+1; d'x<- l9  
for(int cur=l;cur<=r;cur++){ JTSq{NN  
if(i1==mid+1) Bm65 W  
data[cur]=temp[i2++]; 782[yLyv  
else if(i2>r) u-8X$aJ  
data[cur]=temp[i1++]; XhQw+j~1.  
else if(temp[i1] data[cur]=temp[i1++]; k'6<jEbk  
else 16a_GwfM  
data[cur]=temp[i2++]; j` [#Ij  
} aW52.X z%8  
} R>/QA RX  
Gr`MGQ,  
} ^zBjG/'7  
SJ1w1^#Pz  
改进后的归并排序: P-/XYZ]`  
<`oCz Q1  
package org.rut.util.algorithm.support; B"pFJ"XR  
<^H1)=tlF  
import org.rut.util.algorithm.SortUtil; ]+^;vc 1r  
"R@$Wu53|  
/** Fw(b1d>E  
* @author treeroot v9j4|w  
* @since 2006-2-2 */0vJz%<.M  
* @version 1.0 d,GtH)(s  
*/ bLU^1S8Z  
public class ImprovedMergeSort implements SortUtil.Sort {  ;'2`M  
f:x9Y{Y  
private static final int THRESHOLD = 10; o(Ua",|  
]Ssw32yn  
/* PK:o}IWn~x  
* (non-Javadoc) C8bGae(  
* [H6X2yjj|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0?J|C6XM#4  
*/ kT Z?+hx  
public void sort(int[] data) { +d6Aw}*  
int[] temp=new int[data.length]; 7- *( a  
mergeSort(data,temp,0,data.length-1); cJ7{4YK_#/  
} 4~m.#6MT  
2$j Ot}  
private void mergeSort(int[] data, int[] temp, int l, int r) { [9db=$v8$  
int i, j, k; RTPq8S"  
int mid = (l + r) / 2; 2yEO=SN,(  
if (l == r) zAkc 67:  
return; 8xD<A|  
if ((mid - l) >= THRESHOLD) -H ac^4uF  
mergeSort(data, temp, l, mid); >m2<Nl}  
else @dWS*@  
insertSort(data, l, mid - l + 1); Z uFV tW@  
if ((r - mid) > THRESHOLD) dIBKE0`  
mergeSort(data, temp, mid + 1, r); %ojR?=ON  
else @^y?Bh9jQ  
insertSort(data, mid + 1, r - mid); _v~D {H&}  
!ho5VA t  
for (i = l; i <= mid; i++) { 3gPD(r1g  
temp = data; +s/N@]5nW  
} Dh!iY0Lz  
for (j = 1; j <= r - mid; j++) { 1{hoO<CJ  
temp[r - j + 1] = data[j + mid]; ATMogxh  
} f'zU^/$rf  
int a = temp[l]; !UgUXN*  
int b = temp[r]; #2lvfR|  
for (i = l, j = r, k = l; k <= r; k++) { n ]6 0  
if (a < b) { 9znx1AsN  
data[k] = temp[i++]; .5KC'?  
a = temp; \AtwO  
} else { JXSqtk=  
data[k] = temp[j--]; z|DA _dG  
b = temp[j]; v]`A_)[  
} ;}>g1&q  
} C#**)  
}  i_E#cU  
]"7DV3_  
/** YPff)0Nh  
* @param data {YKMQI^O/  
* @param l  wc+N  
* @param i ^ ]6  80h  
*/ x@ s`;qz  
private void insertSort(int[] data, int start, int len) { OJ_2z|f<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); uuUVE/^V'  
} = @Nv:1:r  
} X%9xuc  
} q@M jeGs%  
} :oj) eS[Y  
jC Kt;lj  
堆排序: d-N"mI-  
J! 6z  
package org.rut.util.algorithm.support; " ;R3260  
$vGEY7,  
import org.rut.util.algorithm.SortUtil; J_wz'eIb0  
+}-W.H%`0  
/** \2<yZCn  
* @author treeroot xu?QK6D:  
* @since 2006-2-2 b%!`fn-;  
* @version 1.0 DN 8pJa  
*/ <9k}CXv2PK  
public class HeapSort implements SortUtil.Sort{ J,=E5T}U^  
7SY->-H8  
/* (non-Javadoc) 4Ig{#}<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <9@]|  
*/ x&fCe{5  
public void sort(int[] data) {   [aS)<^  
MaxHeap h=new MaxHeap(); w%o4MFK=!  
h.init(data); TnU$L3k  
for(int i=0;i h.remove(); gAUQQ  
System.arraycopy(h.queue,1,data,0,data.length); sV'.Bomq  
} POg0=32  
!zkEh9G  
private static class MaxHeap{ x>9EVa)  
MqBATW.pmJ  
void init(int[] data){ z3jz pmz  
this.queue=new int[data.length+1]; &'yV:g3H  
for(int i=0;i queue[++size]=data; .9fluAG  
fixUp(size); "A1yqK  
} Jx9%8Ek  
} &CmkNm_B  
K9M.+d4  
private int size=0; |AfQ_iT6c  
.x$T a l  
private int[] queue; u[|S*(P  
QRHm |f9_C  
public int get() { 8'xnhV  
return queue[1]; PZhZK VZx  
} JiLrwPex[  
Mh.eAM8_  
public void remove() { 5)v^ cR?&  
SortUtil.swap(queue,1,size--); %=<NqINM[  
fixDown(1); g)D}p@>m  
} R Mt vEa  
file://fixdown Ng39D#_)  
private void fixDown(int k) { 9la~3L_g  
int j; coVT+we  
while ((j = k << 1) <= size) { \q1%d.\X  
if (j < size %26amp;%26amp; queue[j] j++; 2,Dc]oj  
if (queue[k]>queue[j]) file://不用交换 lKwT5ma7  
break; d lLk4a+  
SortUtil.swap(queue,j,k); RTY4%6]O  
k = j; BrcXn@tl  
} >T^v4A  
} KdpJ[[Ug/  
private void fixUp(int k) { 9qy 9  
while (k > 1) { *K.7Zf0  
int j = k >> 1; nJ})6/gK  
if (queue[j]>queue[k]) (g:W|hS  
break; K y2xWd8  
SortUtil.swap(queue,j,k); o5x^"#  
k = j; E d/O\v@  
} 7[1 R}G V  
} gj;G:;1m  
<d`UifqD  
} c qyh#uWe  
:|Nbk58  
} F X2`p_  
Y1+lk^  
SortUtil: CHw_?#h  
eSBf;lr=  
package org.rut.util.algorithm; z))[Lg  
8J1.(Mwb?  
import org.rut.util.algorithm.support.BubbleSort; EoCwS  
import org.rut.util.algorithm.support.HeapSort; .T-p]9*p  
import org.rut.util.algorithm.support.ImprovedMergeSort; p&l:937  
import org.rut.util.algorithm.support.ImprovedQuickSort; ZSt ww{Z  
import org.rut.util.algorithm.support.InsertSort; becQ5w/~  
import org.rut.util.algorithm.support.MergeSort; K3D $ hb  
import org.rut.util.algorithm.support.QuickSort; "TJ^Z!  
import org.rut.util.algorithm.support.SelectionSort; Tic9r i  
import org.rut.util.algorithm.support.ShellSort; @+#p: sE  
K!gFD  
/** yuX 0Y{:I  
* @author treeroot qW>J-,61/  
* @since 2006-2-2 GTNTx5H  
* @version 1.0 [KJL%u|8/  
*/ :+!b8[?Z  
public class SortUtil { 4O^1gw  
public final static int INSERT = 1; Nq6CvDXi  
public final static int BUBBLE = 2; FQ)Ekss~C  
public final static int SELECTION = 3; ttVSgKAsm  
public final static int SHELL = 4; 9ksrr{tW  
public final static int QUICK = 5; Ft !~w#&-  
public final static int IMPROVED_QUICK = 6;  B4ze$#  
public final static int MERGE = 7; ?%ntO]  
public final static int IMPROVED_MERGE = 8; [rsAY&.  
public final static int HEAP = 9; 0O4mA&&!oK  
nHjwT5Q+Q  
public static void sort(int[] data) { \s'6)_  
sort(data, IMPROVED_QUICK); ^]gl#&"D  
} tH(#nx8  
private static String[] name={ {rLOAewr  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _4Pi>  
}; IPR396J+-  
mH .I!  
private static Sort[] impl=new Sort[]{ Z4' v  
new InsertSort(), .X1niguXH  
new BubbleSort(), `,[c??h  
new SelectionSort(), B.#0kjA}  
new ShellSort(), p<34}iZ  
new QuickSort(), #u@!O%MJ  
new ImprovedQuickSort(), IRa*}MJe  
new MergeSort(), -NeF6  
new ImprovedMergeSort(), FG\?_G  
new HeapSort() q%Pnx_RB  
}; W9~datIh>  
OQvJdjST  
public static String toString(int algorithm){ WgB,,L,  
return name[algorithm-1]; w"|c;E1;_  
} Ip x:k+J  
_P:P5H8  
public static void sort(int[] data, int algorithm) { r_m&Jl@4  
impl[algorithm-1].sort(data); fHi+PEbR  
} qFk(UazN  
^*OA%wg3=h  
public static interface Sort { &IYkeGQr  
public void sort(int[] data); /o2eKx  
} \ PqV|  
:e;fs.C  
public static void swap(int[] data, int i, int j) { t {}1 f  
int temp = data; H@:@zD!G[  
data = data[j]; :JYOC+#q7  
data[j] = temp; l-rnDl  
} kn.z8%^(  
} L  z  
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