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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。 JT?u[p Q^  
插入排序: zMsup4cl  
=SJ#6uFS  
package org.rut.util.algorithm.support; %L=e%E=m  
N d].(_  
import org.rut.util.algorithm.SortUtil; ubwM*P  
/** jH< #)R  
* @author treeroot KqK]R6>  
* @since 2006-2-2 F\m^slsu7=  
* @version 1.0 z`wIb  
*/ Zw]"p63eMa  
public class InsertSort implements SortUtil.Sort{ O] @E8<?^  
lq-KM8j  
/* (non-Javadoc) WXy8<?s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~*HQPp?v  
*/ 8!E.3'jb  
public void sort(int[] data) { V$?6%\M^*  
int temp; W/qXQORv  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [d`E9&Hv3  
} KN}#8.'>3  
} kelBqJ-,p  
} ` ,\b_SFg  
"w:h  
} !"N,w9MbD  
/6 ')B !&  
冒泡排序: ,"EaZ/Bl/  
2lTt  
package org.rut.util.algorithm.support; (!* l+}  
*ERV\/  
import org.rut.util.algorithm.SortUtil; _4by3?<c  
J :O!4gI  
/** _%e8GWf  
* @author treeroot Xdn&%5rI  
* @since 2006-2-2 UY3)6}g6  
* @version 1.0 ZC?~RXL(  
*/ v \:AOY'  
public class BubbleSort implements SortUtil.Sort{ \n{# r`T  
tm~9XFQ<  
/* (non-Javadoc) 0>28o.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0Y8gUpe3P6  
*/ $gl|^c\  
public void sort(int[] data) { K2xB%m1LK  
int temp; H8eEBMGo  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %g9y m@s  
if(data[j] SortUtil.swap(data,j,j-1); 74([~Qs _M  
} |5^ iqW  
} 9<gW~ s>  
} //&3{B  
} &W\e 5X<A  
?MH=8Cl1w  
} [U&k"s?  
_}F& ^  
选择排序: y!b"Cj  
@NM0ILE  
package org.rut.util.algorithm.support; B ~v6_x  
&]TniQH  
import org.rut.util.algorithm.SortUtil; bJ:5pBJ3  
> "hP  
/** Ti? "Hr<W  
* @author treeroot d:'{h"M6  
* @since 2006-2-2 *$A`+D9  
* @version 1.0 &{Z+p(3Gj  
*/ DGHSyB^+1  
public class SelectionSort implements SortUtil.Sort { 2XR!2_)O5  
K*:=d }^  
/* bW`nLiw}%  
* (non-Javadoc) wq?"NQ?O<  
* k6#$Nb606  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e|tx`yA  
*/ jkk%zu  
public void sort(int[] data) { zZMKgFR@  
int temp; O~5t[  
for (int i = 0; i < data.length; i++) { D"4*l5l  
int lowIndex = i; ?8O5%IrJ  
for (int j = data.length - 1; j > i; j--) { g:!U,<C^a  
if (data[j] < data[lowIndex]) { n*[ZS[I  
lowIndex = j; !j$cBf4  
} 02,t  
} >#h,q|B  
SortUtil.swap(data,i,lowIndex); -8)Hulo/{U  
} ef'kG"1  
} /` M#  
e#oK% {A  
} ;r@=[h   
7&id(&y/  
Shell排序: ,1I-%6L  
;pm/nu  
package org.rut.util.algorithm.support; N^QxqQ~  
N:B<5l '  
import org.rut.util.algorithm.SortUtil; t^&hG7L_m,  
!60U^\  
/** ndFVP;q  
* @author treeroot Y2VfJ}%Q  
* @since 2006-2-2 Tf#Op v)  
* @version 1.0 uihH")Mo  
*/ _OGv2r  
public class ShellSort implements SortUtil.Sort{ qlM<X?  
o}=*E  
/* (non-Javadoc) P].Eb7I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E{)X ;kN=  
*/ 4rDV CXE  
public void sort(int[] data) { ;=joQWNDm  
for(int i=data.length/2;i>2;i/=2){ !Ge;f/@  
for(int j=0;j insertSort(data,j,i); T`^Jw s{;7  
} e#hg,I  
} .c>6}:ye  
insertSort(data,0,1); 9 m8KDB[N  
} %oqKpD+  
f%PLR9Nh5@  
/** 2|"D\N  
* @param data w<~[ad}  
* @param j <zpxodM@T  
* @param i GJWGT`"  
*/ 0=&S?J#!  
private void insertSort(int[] data, int start, int inc) { %<^^ Mw  
int temp; bGwOhd<.  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); v{$?Ow T/u  
} TFOx=_.%i  
} a=W%x{  
} '`;=d<'  
Z'A 3\f   
} yMdu Zmkc  
dA~_[x:Z  
快速排序: r\QV%09R  
aEzf*a|fSV  
package org.rut.util.algorithm.support; #6a!OQj  
l[~$9C'ji  
import org.rut.util.algorithm.SortUtil; xbi\KT`~  
ZklO9Ox(  
/** T 9`AL  
* @author treeroot jW7ffb `O  
* @since 2006-2-2 kMW9UUw  
* @version 1.0 )*_G/<N) |  
*/ [4xZy5V  
public class QuickSort implements SortUtil.Sort{ "'t f]s  
V0D&bN*  
/* (non-Javadoc) 8Vz!zYl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R1 SFMI   
*/ n;Mk\*Cg  
public void sort(int[] data) { E!ZLVR.K  
quickSort(data,0,data.length-1); q0q-Coh>  
} ?Sh"%x  
private void quickSort(int[] data,int i,int j){ A3.I|/  
int pivotIndex=(i+j)/2; 8N)Lck2PR  
file://swap Cgln@Rz  
SortUtil.swap(data,pivotIndex,j); K. B\F)K  
dfAw\7v/  
int k=partition(data,i-1,j,data[j]); UU(Pg{DA 6  
SortUtil.swap(data,k,j); db_Qt'>  
if((k-i)>1) quickSort(data,i,k-1); v6G1y[Wl  
if((j-k)>1) quickSort(data,k+1,j); W;8A{3q%N0  
8 a)4>B  
} 9_==C"F  
/** ]O}e{Q>  
* @param data XzIC~}  
* @param i %h(%M'm?  
* @param j kI a16m  
* @return 9:g A0Z  
*/ xtCMK1# x  
private int partition(int[] data, int l, int r,int pivot) { J;<dO7j5  
do{ .h4NG4FIF  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,){#J"W  
SortUtil.swap(data,l,r); c|3oa"6T>  
} iOIq2&sV  
while(l SortUtil.swap(data,l,r); ]35`N<Ac  
return l; MA_YMxP.'  
} X2I_,k'fQ  
[(a3ljbRX  
} FO>!T@0G  
=}tomN(F~[  
改进后的快速排序: N"<.v6Z  
E,\)tZ;,  
package org.rut.util.algorithm.support; O*/%z r  
S]=.p-Am  
import org.rut.util.algorithm.SortUtil; IAzFwlO9  
p2(ha3PW  
/** ] 7[#K^  
* @author treeroot L8n?F#q  
* @since 2006-2-2 @r[SqGa:  
* @version 1.0 mW{uChHP  
*/ l?IeZisX  
public class ImprovedQuickSort implements SortUtil.Sort { 94O\M RQ*  
e wT K2  
private static int MAX_STACK_SIZE=4096; O Lt0Q.{  
private static int THRESHOLD=10; h3.CvPYy1  
/* (non-Javadoc) L|<j/bP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~tTn7[!  
*/ $DfK}CT  
public void sort(int[] data) { 117lhx].'  
int[] stack=new int[MAX_STACK_SIZE]; wQhuU  
lvODhoT  
int top=-1; g]JJ!$*1  
int pivot; Z" H;t\P  
int pivotIndex,l,r; *tT}N@<%  
._>03,"  
stack[++top]=0; \VEnP=*:W  
stack[++top]=data.length-1; |AE{rvP{@  
#b&tNZ4!_  
while(top>0){ _vb'3~'S  
int j=stack[top--]; ?fP3R':s  
int i=stack[top--]; qT$IV\;_  
yogL8V-^4  
pivotIndex=(i+j)/2; hC8WRxEGq  
pivot=data[pivotIndex]; 8a@k6OZ  
u4T$  
SortUtil.swap(data,pivotIndex,j); q9_AL8_  
C7R3W,  
file://partition I6;6x  
l=i-1; NAtDt=  
r=j; ID`C  
do{ >`&2]Wc)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); )N~ p4kp  
SortUtil.swap(data,l,r); r?Mf3U^G  
} :4)x  
while(l SortUtil.swap(data,l,r); ks phO-  
SortUtil.swap(data,l,j); OA6i/3 #8  
t}I@Rmso  
if((l-i)>THRESHOLD){ fsK=]~<g  
stack[++top]=i; {5  pK8  
stack[++top]=l-1; oV['%Z'  
} tA4Ra,-c  
if((j-l)>THRESHOLD){ Oq% TW|a#  
stack[++top]=l+1; G"m0[|XH  
stack[++top]=j; oB!Y)f6H1  
} b==jlYa=  
qov<@FvE0  
} p*g)-/mA  
file://new InsertSort().sort(data); un!v1g9O  
insertSort(data); 68bvbig  
} Kv!:2br  
/** mzM95yQ^Z  
* @param data <]%6x[  
*/ %U}6(~  
private void insertSort(int[] data) {  h#}w18l  
int temp; x ~)~v?>T  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); stfniV  
} V&ETt.91Ft  
} @8`I!fZ  
} 3B%7SX  
G na%|tUz|  
} tb oQn~&4  
'{~[e**  
归并排序: q,#s m'S  
IEm~^D#<=  
package org.rut.util.algorithm.support; (||qFu9a  
"XV@O jr E  
import org.rut.util.algorithm.SortUtil; Q_fgpjEh/t  
M0C)SU5"  
/** ^{IZpT3  
* @author treeroot ;u(*&vRqr^  
* @since 2006-2-2 GTfM *b  
* @version 1.0 aj|PyX3P:  
*/ #6#n4`%ER  
public class MergeSort implements SortUtil.Sort{ @+zWLq!1pB  
W //+[  
/* (non-Javadoc) *) B \M>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) />I5,D'h  
*/ bWb/>hI8 Q  
public void sort(int[] data) { t {1 [Ip  
int[] temp=new int[data.length]; w+j\Py_G"  
mergeSort(data,temp,0,data.length-1); 3t.!5 L  
} v4E=)?  
[~|k;\2 +  
private void mergeSort(int[] data,int[] temp,int l,int r){ `_GCS,/t  
int mid=(l+r)/2; ZRc^}5}WA  
if(l==r) return ; xjnAK!sD  
mergeSort(data,temp,l,mid); s}Go")p<:  
mergeSort(data,temp,mid+1,r); 9?hF<}1XH}  
for(int i=l;i<=r;i++){ tvVf)bbz  
temp=data; DFZ@q=ZT  
} 9&zR i  
int i1=l; \fC;b"j  
int i2=mid+1; r|ZB3L|7  
for(int cur=l;cur<=r;cur++){ a""9%./B  
if(i1==mid+1) t1 9f%d  
data[cur]=temp[i2++]; \VIY[6sn\M  
else if(i2>r) >{~xO 6H  
data[cur]=temp[i1++]; mYJ8O$  
else if(temp[i1] data[cur]=temp[i1++]; uMG y-c  
else 7;'UC','  
data[cur]=temp[i2++]; ZGX"Vn|YL  
} ,#;`f=aqTG  
} +,R!el!o~u  
`%#_y67v  
} %nq<nfDT  
2P'Vp7f6 Y  
改进后的归并排序: ZHeue_~x4  
Uv.Xw}q  
package org.rut.util.algorithm.support; 0Qeda@J  
S?i^ ~  
import org.rut.util.algorithm.SortUtil; h7K,q  S  
x4g6Qze  
/** 9cN@y<_I  
* @author treeroot $4ZV(j]  
* @since 2006-2-2 By!u*vSev  
* @version 1.0 =Oh$pZRymu  
*/ "8z Me L  
public class ImprovedMergeSort implements SortUtil.Sort { Si~wig2  
BH^*K/ ^  
private static final int THRESHOLD = 10; #k>n5cR@0  
0)h.[O8@>  
/* ZW"f*vwQo  
* (non-Javadoc) \pK&gdw  
* ?Q=(?yR0]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /{8Y,pZbu  
*/ @##}zku  
public void sort(int[] data) { H*0g*(  
int[] temp=new int[data.length]; CiHx.5TiC  
mergeSort(data,temp,0,data.length-1); #WG;p(?:  
} 3K~^H1l  
1#"wfiW  
private void mergeSort(int[] data, int[] temp, int l, int r) { &u[F)|  
int i, j, k; !E00I0W-h  
int mid = (l + r) / 2; &``nD  
if (l == r) ]P7gEBi  
return; G] tT=X[  
if ((mid - l) >= THRESHOLD) b9i_\  
mergeSort(data, temp, l, mid); B$s6|~  
else F+R1}5-3cl  
insertSort(data, l, mid - l + 1); ZT/f  
if ((r - mid) > THRESHOLD) d!&LpODI]*  
mergeSort(data, temp, mid + 1, r); 0]DX KI  
else x2I|iA=  
insertSort(data, mid + 1, r - mid); =M@)q y  
\J?&XaO=  
for (i = l; i <= mid; i++) { ^hEN  
temp = data; V?^qW#AG  
} Xu_1r8-|=b  
for (j = 1; j <= r - mid; j++) { r:0RvWif  
temp[r - j + 1] = data[j + mid]; Dvz 6 E  
} hTby:$aCg  
int a = temp[l]; J'=s25OWU  
int b = temp[r]; c; .y  
for (i = l, j = r, k = l; k <= r; k++) { \?e2qu/ C  
if (a < b) { 3bC-B!{;g  
data[k] = temp[i++]; d@JavcR  
a = temp; j;j~R3B  
} else { fWfhs}_  
data[k] = temp[j--]; k8}'@w  
b = temp[j]; ;2fzA<RkK  
} K]>4*)A:  
} u\xrC\Ka  
} G5 )"%G.  
"k [$euV  
/** Wx;%W"a  
* @param data fIx|0,D&7L  
* @param l h;} fdk  
* @param i S$wC{7?f  
*/ 'i3-mZ/|8  
private void insertSort(int[] data, int start, int len) { O@H D'  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); w\Q(wH'  
} l&] %APL  
} MB>4Y]rtU  
} Z *l&<q>#  
} ~]W @+\l  
u5U^}<}y}  
堆排序: d@Bd*iI<  
\Z%_dT}  
package org.rut.util.algorithm.support; Bgsi$2hI  
!VG ]~lc  
import org.rut.util.algorithm.SortUtil; xQ?$H?5B<  
qIzv|Nte  
/**  UiK)m:NU  
* @author treeroot n^G[N-\3  
* @since 2006-2-2 +W[{UC4b  
* @version 1.0 V*%><r  
*/ B=_5gZ4Y  
public class HeapSort implements SortUtil.Sort{ M6]:^;p'  
HPO:aGU   
/* (non-Javadoc) tg/!=g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5?j#  
*/ Y3)*MqZlF  
public void sort(int[] data) { Lq@uwiq!  
MaxHeap h=new MaxHeap(); Dg ~k"Ice  
h.init(data); JGzEm>_ m  
for(int i=0;i h.remove(); T`I4_x  
System.arraycopy(h.queue,1,data,0,data.length); brCL"g|}  
} nM8'="$  
6(A"5B=\  
private static class MaxHeap{ 0Y~5|OXJ  
1Sns$t%b  
void init(int[] data){ q8e]{sT'!  
this.queue=new int[data.length+1]; [zrFW g6N  
for(int i=0;i queue[++size]=data; a*_" nI&lr  
fixUp(size); dt<P6pK-  
} &)!N5Veb  
} `v/p4/  
7Z}T!HFMr  
private int size=0; %|2x7@&s  
e<u~v0rDl  
private int[] queue; Fb{HiU9<!  
1[RI 07g7*  
public int get() { vBY?3p,0p  
return queue[1]; R\6dvd  
} #N97  
_w5c-\-PUM  
public void remove() { !.|A}8nK  
SortUtil.swap(queue,1,size--); te>Op 1R  
fixDown(1); &y3;`A7,  
} q?0&0  
file://fixdown 1yc$b+TH  
private void fixDown(int k) { [A;0I jKam  
int j; R&/"?&pfa  
while ((j = k << 1) <= size) { =| r% lx  
if (j < size %26amp;%26amp; queue[j] j++; q{q;X{  
if (queue[k]>queue[j]) file://不用交换 v+d`J55  
break; 1:I _ ;O_  
SortUtil.swap(queue,j,k); b^P\Kky  
k = j; | gGD3H  
}  `7V'A  
} ^NxKA'oWQ  
private void fixUp(int k) { fzjtaH?  
while (k > 1) { 7zNfq.Ni~  
int j = k >> 1; r8_MIGM'  
if (queue[j]>queue[k]) \ tU[,3  
break; ZzT"u1,&  
SortUtil.swap(queue,j,k); ZZeF1y[q  
k = j; (. $e@k=  
} r,GgMk  
} [&p/7  
HIlTt  
} 1HRcEzA  
C8 $KVZ  
} }%,LV]rGEZ  
P[,  
SortUtil: j'SGZnsy*  
4"+v:t)z6{  
package org.rut.util.algorithm; D<^K7tJui  
EuD$^#  
import org.rut.util.algorithm.support.BubbleSort; NQd0$q  
import org.rut.util.algorithm.support.HeapSort; \Dx)P[Ur  
import org.rut.util.algorithm.support.ImprovedMergeSort; v@:m8Y(t  
import org.rut.util.algorithm.support.ImprovedQuickSort; J>0RN/38o  
import org.rut.util.algorithm.support.InsertSort; OK:YnSk"  
import org.rut.util.algorithm.support.MergeSort; t1o_x}z4.  
import org.rut.util.algorithm.support.QuickSort; ]rO/IuB  
import org.rut.util.algorithm.support.SelectionSort; VQ2B|v  
import org.rut.util.algorithm.support.ShellSort; o~'UWU'#  
~2XiKY;W?  
/** h7}P5z0F  
* @author treeroot X/S%0AwZ  
* @since 2006-2-2 }~ga86:n0  
* @version 1.0 n=h!V$X   
*/ ^QTkre  
public class SortUtil { |f[:mO   
public final static int INSERT = 1; U;U19[]  
public final static int BUBBLE = 2; 7I:<i$)V  
public final static int SELECTION = 3; ","to  
public final static int SHELL = 4; B}d)e_uLj  
public final static int QUICK = 5; XiyL563gh  
public final static int IMPROVED_QUICK = 6; ,LDdL  
public final static int MERGE = 7; #4^D'r>pJ  
public final static int IMPROVED_MERGE = 8; t)l^$j !h@  
public final static int HEAP = 9; arn7<w0  
04!akPP<  
public static void sort(int[] data) { +tv"j;z  
sort(data, IMPROVED_QUICK); SiT5QJe  
} J~5+=V7OV  
private static String[] name={ | +aD%'|  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" IOH6h=  
}; /| [%~`?BM  
tfd!;`B  
private static Sort[] impl=new Sort[]{ 212  
new InsertSort(), 1lHBg  
new BubbleSort(), n'<F'1SWv  
new SelectionSort(), b5UIX Kim  
new ShellSort(), .$r7q[  
new QuickSort(), I oC}0C7  
new ImprovedQuickSort(), _I #a `G  
new MergeSort(), yJHFo[wGMJ  
new ImprovedMergeSort(), 2NWQiSz  
new HeapSort() ,mD{4 >7  
}; (fC U+  
h_xzqElZu  
public static String toString(int algorithm){ MZ <BCRB  
return name[algorithm-1]; (L7%V !  
} M}!E :bv'  
S>EO6z#   
public static void sort(int[] data, int algorithm) { ,) 3Eog\-  
impl[algorithm-1].sort(data); 0d #jiG  
} EceD\}  
A@ 4Oq  
public static interface Sort { Qr*7bE(a  
public void sort(int[] data); +bcJm  
} G/_9!lE  
1(m[L=H5>  
public static void swap(int[] data, int i, int j) { Nvj KB)J  
int temp = data; .^!uazPE0  
data = data[j]; s!j vBy  
data[j] = temp; j{H,{x  
}  u~j&g  
} o<i\1<eI  
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