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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。 R*O<(  
插入排序: }u+cS[#-  
}u.I%{4  
package org.rut.util.algorithm.support; S0WKEv@Hn  
avb'dx*q>  
import org.rut.util.algorithm.SortUtil; =sUrSVUeU  
/** c7@[RG !  
* @author treeroot Y' O3RA5E  
* @since 2006-2-2 x"~gulcz  
* @version 1.0 *?~&O.R"  
*/ ]--" K{  
public class InsertSort implements SortUtil.Sort{ TFO4jjiC"  
! i8'gq'q  
/* (non-Javadoc) <O3,b:vw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) WesEZ\V  
*/ AGV+Y 6  
public void sort(int[] data) { BnU3oP  
int temp; LAH.PcjPa  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 9'0v]ar  
} !'(QF9%Q  
} -eFq^KP2  
} )E c /5=A  
E`#/m@:|-  
} @n;$Edza/  
yk/BQ|G  
冒泡排序: &%;K_asV;  
YSr u5Q  
package org.rut.util.algorithm.support; $ S]l%  
Ap!Y 3C  
import org.rut.util.algorithm.SortUtil; qS[KB\RN1  
ZjveXrx  
/** fjLS_Q ;h  
* @author treeroot Yu: !l>  
* @since 2006-2-2 s:*" b'  
* @version 1.0 !"SuE)WM  
*/ ]SL0Mn g8  
public class BubbleSort implements SortUtil.Sort{ ys9'1+9  
n{=Nf|=  
/* (non-Javadoc) -d *je{c |  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <xh";seL  
*/ 78kT}kgW  
public void sort(int[] data) { >dfk2.6e  
int temp; #;hYJ Y  
for(int i=0;i for(int j=data.length-1;j>i;j--){ \@$V^;OP/  
if(data[j] SortUtil.swap(data,j,j-1); &5n0J  
} _)MbvF  
} vt(cC) )  
} EttQ<z_T  
} ; mwU>l,4  
k? !'OHmBL  
} s!?T$@a=  
lr9s`>9  
选择排序: >#|%y>g .o  
P vW~EJ  
package org.rut.util.algorithm.support; cm`x;[e6l  
=j~Xrytn  
import org.rut.util.algorithm.SortUtil; &6^QFqqW`-  
/^':5"=o  
/** %Wa. 2s  
* @author treeroot _$m1?DZ  
* @since 2006-2-2 =-;J2Qlg6  
* @version 1.0 `J-&Y2_/k  
*/ %YwIR.o  
public class SelectionSort implements SortUtil.Sort { @(any ^QJ  
dCO)"]  
/* gUrXaD#  
* (non-Javadoc) a[7 Lqu  
* lO=~&_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6MmkEU z  
*/ 5^Ps(8VbS  
public void sort(int[] data) { _e$T'*q  
int temp; q]wP^;\Jl  
for (int i = 0; i < data.length; i++) { GI)eq:K_U8  
int lowIndex = i; qHE(p+]E  
for (int j = data.length - 1; j > i; j--) { ?U(`x6\:  
if (data[j] < data[lowIndex]) { ?btZdnQ))S  
lowIndex = j; #_'| TT>p#  
} '<Jqp7$dL  
} 1(jDBP!8  
SortUtil.swap(data,i,lowIndex); c63yJqiW  
} !1xX)XD4y  
} (}MN16!  
T*rx5*:o  
} 2-_d~~O1N  
4+q3 Kw  
Shell排序: ,7ZV;f 81  
15CKcM6  
package org.rut.util.algorithm.support;  @"L*!  
o|nN0z)b4  
import org.rut.util.algorithm.SortUtil; 9_l WB6  
QN^AihsPi  
/** V2IurDE  
* @author treeroot p>= b|Qy|  
* @since 2006-2-2 r;8X6C  
* @version 1.0 q1,jDJglZ  
*/ XG01g3  
public class ShellSort implements SortUtil.Sort{ %OAvhutS  
>%c7|\q[R  
/* (non-Javadoc) >M^4p   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .{4U]a;[  
*/ L(DDyA{bA  
public void sort(int[] data) { X% X &<  
for(int i=data.length/2;i>2;i/=2){ |6GDIoZ  
for(int j=0;j insertSort(data,j,i); HD153M,  
} Hg 2Rcl  
} i2 G.<(3O  
insertSort(data,0,1); um*!+Q  
} G }U'?p  
Rv)>x w  
/** +|zcjI'=O  
* @param data pN#RTb8o  
* @param j c&I"&oZ@&  
* @param i rA[wC%%  
*/ LW*v/`@  
private void insertSort(int[] data, int start, int inc) { #T$yQ;eQ  
int temp; W \XLf,_+  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); eWWfUNBSLX  
} o((!3H{ D  
} ZHimS7  
} lC'U3Q&  
=> X"  
} H1-eMDe  
")D5ulb\  
快速排序: UQ}#=[)2e  
89\DS!\x9  
package org.rut.util.algorithm.support; ' oS= d  
l9#@4Os  
import org.rut.util.algorithm.SortUtil; 4N8(WI"4S  
s_%KWkS  
/** E@_]L<Z  
* @author treeroot `]j:''K  
* @since 2006-2-2 ~ ^*;#[<  
* @version 1.0 nj6|WJ  
*/ .^V9XN{'a  
public class QuickSort implements SortUtil.Sort{ l#fwNM/F  
tFu"h1  
/* (non-Javadoc) Qz`v0"'w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6D/K=-   
*/ Q|(G -  
public void sort(int[] data) { m#`1.5%  
quickSort(data,0,data.length-1); d'k99(vy  
} v`Yj)  
private void quickSort(int[] data,int i,int j){ 5DmW5w'p  
int pivotIndex=(i+j)/2; {3eg4j.Z  
file://swap ph>0?Z =bn  
SortUtil.swap(data,pivotIndex,j); !z2KQ 4C  
X{ f#kB]w  
int k=partition(data,i-1,j,data[j]); L&hv:+3N  
SortUtil.swap(data,k,j); AYGe`{  
if((k-i)>1) quickSort(data,i,k-1); Mq52B_  
if((j-k)>1) quickSort(data,k+1,j); K(}g!iT)~  
)6*)u/x:  
} IIO-Jr  
/** 'J_`CS  
* @param data $d5}OI"g  
* @param i !![HR6"Q  
* @param j ?g9oiOhnG  
* @return pB'{_{8aA  
*/ uUJH^pW  
private int partition(int[] data, int l, int r,int pivot) { /Suh&qw>  
do{ nR8r$2B+t  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ,vB~9^~  
SortUtil.swap(data,l,r); x};sti R  
} qyL!>kZr@  
while(l SortUtil.swap(data,l,r); SGP)A(,k9  
return l; 8:fq!m  
} U# U*^#  
OCEhwB0  
} N~tq ]  
)jGB[s";)y  
改进后的快速排序: [Zne19/  
k\Z7Dg$\D  
package org.rut.util.algorithm.support; :%>TM/E N  
~_a$5Y  
import org.rut.util.algorithm.SortUtil; cf,^7,-`"  
#:s*Hy=  
/** dU&hM<.|  
* @author treeroot 98XlcI#  
* @since 2006-2-2 7x#."6>Dy  
* @version 1.0 i,!tu  
*/ 11?d,6Jl  
public class ImprovedQuickSort implements SortUtil.Sort { #oJ%i+V  
T\w{&3ONm  
private static int MAX_STACK_SIZE=4096; uU/'oZ?  
private static int THRESHOLD=10; d~#:t~ $,  
/* (non-Javadoc) A,4Z{f83  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -+y3~^EYm,  
*/ `J %35  
public void sort(int[] data) { AmB*4p5b  
int[] stack=new int[MAX_STACK_SIZE]; 7gE/g`"#  
c7A]\1 ~  
int top=-1; 3jjV bm  
int pivot; y'C  
int pivotIndex,l,r; DLPg0>;jl  
D[dI_|59a  
stack[++top]=0; B7( bNr  
stack[++top]=data.length-1; o^W.53yX  
} p `A>  
while(top>0){ jIck!  
int j=stack[top--]; Q!{,^Qb  
int i=stack[top--]; ?*&5`Xh  
a+<{!+3v  
pivotIndex=(i+j)/2; sp6A* mwl  
pivot=data[pivotIndex]; EbnV"]1  
_2X6c,  
SortUtil.swap(data,pivotIndex,j); z@[-+Q:  
X3m)  
file://partition M\9+?  
l=i-1; '?1g_C QsS  
r=j; $0*D7P^8  
do{ <Aqo[']  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); e\.  
SortUtil.swap(data,l,r); r*UE>_3J  
} a xz-H`oq4  
while(l SortUtil.swap(data,l,r); BG/RNem  
SortUtil.swap(data,l,j); 6iS7Hao"  
HL%|DCo  
if((l-i)>THRESHOLD){ ,L\>mGw  
stack[++top]=i; Bhk@0\a  
stack[++top]=l-1; <OTx79m  
} yH0vESgv  
if((j-l)>THRESHOLD){ S]?I7_  
stack[++top]=l+1; 5%"sv+iO  
stack[++top]=j; %ZX3:2  
} Ge1"+:tbJ  
6|QIzs<Z-X  
} AbIYdFXB  
file://new InsertSort().sort(data); Cy6%f?j  
insertSort(data); %7 $X *  
} j%i6H1#.Z  
/** NUh+ &M  
* @param data f@0Km^aUc  
*/ "EnxVV  
private void insertSort(int[] data) { VjJ}q*/3e  
int temp; |eK^Yhym  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wQYW5X  
} }(!3)k7*  
} h059DiH  
} >dnDN3x  
\lF-]vz*  
} Bw>)gSB5$k  
/L=Y8tDt  
归并排序: as"@E>a  
IU\h,Ug  
package org.rut.util.algorithm.support; C0W-}H  
\S>GtlQbn  
import org.rut.util.algorithm.SortUtil; d$y?py  
9yp'-RKjw  
/** 4P?@NJp  
* @author treeroot  Y+Cv9U0  
* @since 2006-2-2 HqXS-TG  
* @version 1.0 $V;0z~&!'  
*/ D{6<,#P{w  
public class MergeSort implements SortUtil.Sort{ M=4`^.Ocm  
=g?k`v p  
/* (non-Javadoc) 3*N0oc^m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aX? tnDv  
*/ W8M(@* T  
public void sort(int[] data) { i4m P*RwC  
int[] temp=new int[data.length]; JtxitF2  
mergeSort(data,temp,0,data.length-1); ucFfxar"  
} ?@7Reh\  
DJ`xCs!R  
private void mergeSort(int[] data,int[] temp,int l,int r){ meZZQ:eSl  
int mid=(l+r)/2; c9Q_Qr0'  
if(l==r) return ; .gY=<bG/fA  
mergeSort(data,temp,l,mid); ;_m; :<  
mergeSort(data,temp,mid+1,r); V!QC.D<  
for(int i=l;i<=r;i++){ d'[q2y?6N  
temp=data; 8zQN[[#n  
} o@ @|4 F  
int i1=l; _% i!LyG  
int i2=mid+1; E+J+fi  
for(int cur=l;cur<=r;cur++){ Ehq [4}  
if(i1==mid+1) ) .W0}  
data[cur]=temp[i2++]; Q}#xfrprF  
else if(i2>r) y<PQ$D)  
data[cur]=temp[i1++]; zA| )9Dq  
else if(temp[i1] data[cur]=temp[i1++]; X?Or.  
else w!OYH1ds]_  
data[cur]=temp[i2++]; uCc5)  
} &.JJhX  
} }j{Z &(K  
&}d5'IRT  
} f<>CSjQ4c  
fzUG1|$e  
改进后的归并排序: $?u LFD  
oG c9 6B%  
package org.rut.util.algorithm.support; p tlag&Z  
)1f.=QZN^;  
import org.rut.util.algorithm.SortUtil; T-Yb|@4  
Wz;@Rl|F  
/** y 7z)lBy\  
* @author treeroot k=9k4l  
* @since 2006-2-2 2yVQqwQ m  
* @version 1.0 (V0KmNCW`  
*/ 9[h8Dy  
public class ImprovedMergeSort implements SortUtil.Sort { 6uxF<  
Zi<(>@z2  
private static final int THRESHOLD = 10; DuIgFp  
U5[r&Y D  
/* py6O\` \  
* (non-Javadoc) dv?t;D@p!  
* }>_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l7 U<]i GL  
*/ i:H]Sb)<b  
public void sort(int[] data) { x^McUfdr|  
int[] temp=new int[data.length]; !\\OMAf7  
mergeSort(data,temp,0,data.length-1); *!yA'z<  
} 3*-!0  
 p]jG ,S  
private void mergeSort(int[] data, int[] temp, int l, int r) { (&M,rW~Qxs  
int i, j, k; GN+!o($  
int mid = (l + r) / 2; /!U(/  
if (l == r) \_7'f  
return; ' ?a d  
if ((mid - l) >= THRESHOLD) \vE-;,  
mergeSort(data, temp, l, mid); v!AfIcEV  
else Yn>FSq^Wp-  
insertSort(data, l, mid - l + 1); M-(,*6Q  
if ((r - mid) > THRESHOLD) 1jd.tup  
mergeSort(data, temp, mid + 1, r); %yK- Q,'O  
else \W|ymV_Ki  
insertSort(data, mid + 1, r - mid); \/9O5`u*V  
3gv?rJV  
for (i = l; i <= mid; i++) { r9p ((ir  
temp = data; 3&R1C>JS ]  
} fONycXM]  
for (j = 1; j <= r - mid; j++) { ?gCP"~  
temp[r - j + 1] = data[j + mid]; 57EL&V%j  
} X$eR RSW  
int a = temp[l]; uM9Gj@_  
int b = temp[r]; *r ('A  
for (i = l, j = r, k = l; k <= r; k++) { XII',&  
if (a < b) { m?=J;r"Re  
data[k] = temp[i++]; P` y.3aK  
a = temp; {x~r$")c?  
} else { dJ~Occ1~r  
data[k] = temp[j--]; :wfN+g=  
b = temp[j]; 10_>EY`  
} OX[r\  
} uEkGo5  
} ;aH3{TS  
2#Qw  
/** zL3I!& z2  
* @param data TRr%]qd{Hr  
* @param l ?y,KN}s_  
* @param i [_*?~  
*/ `:d\L H  
private void insertSort(int[] data, int start, int len) { A2.4#Qb'  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); bL|$\'S  
} pxCQ=0k  
} z}Vg4\x&  
} 0|,Ij $  
} c=re(  
3pyE'9"f6  
堆排序: \ *A!@T  
WUb] 8$n  
package org.rut.util.algorithm.support; 9ZDbZc  
ITD&w g  
import org.rut.util.algorithm.SortUtil; }/jWa |)f  
)GOio+{H  
/** WsT   
* @author treeroot W)L*zVj~  
* @since 2006-2-2 pz"}o#R"x  
* @version 1.0 s<5PsR  
*/ ViU5l*n;  
public class HeapSort implements SortUtil.Sort{ <:!:7  
PmtXD6p3(  
/* (non-Javadoc) Lc(eY{CY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [{zfI`6  
*/ BY@l:y4  
public void sort(int[] data) { bQdu=s[  
MaxHeap h=new MaxHeap(); Rpj{!Ia  
h.init(data); N9~'\O$'7  
for(int i=0;i h.remove(); x#hSN|'"  
System.arraycopy(h.queue,1,data,0,data.length); s\ Ln  
} /Eu|Jg=I  
2rHQ7  
private static class MaxHeap{  p+-IvU  
K1p.{  
void init(int[] data){ :mt<]Oy3  
this.queue=new int[data.length+1]; i"mQ  
for(int i=0;i queue[++size]=data; (4/W)L$  
fixUp(size); s%G%s,d  
} &d]@$4u$;  
} w Ju9.  
NTVaz.  
private int size=0; LtV,djk  
GtKSA#oYZB  
private int[] queue; r6It )PQ  
Kd*=-  
public int get() { nuw7pEW@?  
return queue[1]; t >Rh  
} z&\N^tBv  
Y/ %XkDC~  
public void remove() { TY?O$d2b3  
SortUtil.swap(queue,1,size--); szD9z{9"y  
fixDown(1); Az/B/BLB  
} g*!1S  
file://fixdown xl9S=^`=  
private void fixDown(int k) { tjQ6[`  
int j; dV /Es  
while ((j = k << 1) <= size) { .UvDew/Y  
if (j < size %26amp;%26amp; queue[j] j++; ,:0!+1  
if (queue[k]>queue[j]) file://不用交换 ((M>To_l  
break; fh` }~ aQ  
SortUtil.swap(queue,j,k); z G`|)  
k = j; V`G^Jyj  
} w%(D4ldp   
} k7]4TIUD*  
private void fixUp(int k) { 7/iN`3Bz  
while (k > 1) { g!Ui|]BI9  
int j = k >> 1; # hw;aQ  
if (queue[j]>queue[k]) (Dn1Eov  
break; h<qi[d4X  
SortUtil.swap(queue,j,k); kV4L4yE  
k = j; +}eK8>2  
} OyG2Ks"H  
}  )|W6Z  
uH#X:Vne  
} V{X/yN.u  
y2R\SL,  
} H|/"'t OZ  
VO /b&%  
SortUtil: +wZ|g6vMct  
=&~ K;=:  
package org.rut.util.algorithm; n*caP9B  
V(Cxd.u   
import org.rut.util.algorithm.support.BubbleSort; |hX\ep   
import org.rut.util.algorithm.support.HeapSort; R7c42L\QA  
import org.rut.util.algorithm.support.ImprovedMergeSort; 4}Lui9  
import org.rut.util.algorithm.support.ImprovedQuickSort; e}(8BF  
import org.rut.util.algorithm.support.InsertSort; ,l.+$G  
import org.rut.util.algorithm.support.MergeSort; 9%riB/vkrF  
import org.rut.util.algorithm.support.QuickSort; S'`RP2P  
import org.rut.util.algorithm.support.SelectionSort; ,rOh*ebF  
import org.rut.util.algorithm.support.ShellSort; h?vny->uJ  
<- R%  
/** 'C@yJf  
* @author treeroot %BQ?DTtb7'  
* @since 2006-2-2 W,:j >v g  
* @version 1.0 i8%Z(@_`  
*/ VBW][f  
public class SortUtil { -b34Wz(  
public final static int INSERT = 1; IR32O,)  
public final static int BUBBLE = 2; {MUO25s02  
public final static int SELECTION = 3; M XuHA?  
public final static int SHELL = 4; <SdOb#2  
public final static int QUICK = 5; ygd*zy9  
public final static int IMPROVED_QUICK = 6; 65tsJ"a<  
public final static int MERGE = 7; >f D%lq;  
public final static int IMPROVED_MERGE = 8; Ex6Kxd}8  
public final static int HEAP = 9; R<^E?FI   
9f CU+s  
public static void sort(int[] data) { bNHs jx@  
sort(data, IMPROVED_QUICK); TQOJN  
} 2}_^~8  
private static String[] name={ HUbXJsSP  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" M7#CMLy  
}; 6=x]20  
hMgk+4*  
private static Sort[] impl=new Sort[]{ e~nh95  
new InsertSort(), I<" UQ\)  
new BubbleSort(), iZ0(a   
new SelectionSort(), '1d0 *5+6k  
new ShellSort(), Hi U/fi`  
new QuickSort(), #v4^,$k>  
new ImprovedQuickSort(), fT<3~Z>m  
new MergeSort(), {;o54zuKf  
new ImprovedMergeSort(), #IeG/t(  
new HeapSort() \*pS 4vy5x  
}; ClufP6'  
@P[%6 d  
public static String toString(int algorithm){ F5{GMn;j  
return name[algorithm-1]; rLbFaLeQ  
} AP9\]qZ(7  
ssmJ?sl  
public static void sort(int[] data, int algorithm) { qj^A   
impl[algorithm-1].sort(data); cca]@Ox]  
} }IQ![T5  
 [geT u  
public static interface Sort { |7.X)h`  
public void sort(int[] data); Z*(OcQ-  
} bNoZ{ 7  
gL1r"&^L  
public static void swap(int[] data, int i, int j) { QwuSo{G  
int temp = data; Ko "JH=<  
data = data[j]; \?^ EFA+;  
data[j] = temp; S)"vyGv  
} i,L"%q)C  
} L l,nt  
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