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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。 BQ u8$W  
插入排序: 0{ B<A^Bf  
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package org.rut.util.algorithm.support; E:/!]sm!  
9'sZi}rT  
import org.rut.util.algorithm.SortUtil; }T\.;$f  
/** 2*O# m  
* @author treeroot ^?(#%~NS  
* @since 2006-2-2 }za pN v  
* @version 1.0 Y7g%nz[[  
*/ ,4'y(X<R  
public class InsertSort implements SortUtil.Sort{ F5YoEWS  
?yj g\S?L  
/* (non-Javadoc) !LpjTMYs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F."ZCEb  
*/ e4Qjx*[G  
public void sort(int[] data) { PPySOkmS3  
int temp; 1Dhe! n#  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6S n&; ap  
} tKe-Dk9  
} 9)S3{i6w  
} zb4@U=?w}  
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} 9Xa.%vw>  
. 70=xH  
冒泡排序: Wp:vz']V  
11#b%dT  
package org.rut.util.algorithm.support; Ut'T!RD  
,:J[|9  
import org.rut.util.algorithm.SortUtil; #&r}J  
CP2wg .  
/** r_Ou\|jU  
* @author treeroot 3w |5%`  
* @since 2006-2-2 @73kry v  
* @version 1.0 `kvIw,c.  
*/ {Y2 J:x  
public class BubbleSort implements SortUtil.Sort{ LVdR,'lS  
mejNa(D ^  
/* (non-Javadoc) ~4FzA,,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wL:7G  
*/ g| 3bM  
public void sort(int[] data) { sxRKWM@4  
int temp; 0',buJncV  
for(int i=0;i for(int j=data.length-1;j>i;j--){ "?aI  
if(data[j] SortUtil.swap(data,j,j-1); 4\|Q;@f  
} d(V4;8a0  
} Bnk<e  
} <Rn-B).3bs  
} V0 Z8VqV  
(j@c946z""  
} Z+6WG  
5HHf3E [  
选择排序: (=WYi~2v  
F|m &n&  
package org.rut.util.algorithm.support; 7 qn=W  
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import org.rut.util.algorithm.SortUtil; vuY X0&  
McS]aJfrk  
/** ZD|F"v.  
* @author treeroot H$WD7/?j  
* @since 2006-2-2 l8+)Xk>   
* @version 1.0  *$DD+]2  
*/ hPz=Ec<zW  
public class SelectionSort implements SortUtil.Sort { xgkCN$zQ`  
V{q*hQd_3  
/* DOFW"SpE  
* (non-Javadoc) i={4rZOD^  
* ZDp^k{AN9a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D8~\*0->  
*/ )h0>e9z>Y  
public void sort(int[] data) { z<fd!g+^  
int temp; [$d]U.  
for (int i = 0; i < data.length; i++) { d&|5Rk ~  
int lowIndex = i; 4 Cd5-I  
for (int j = data.length - 1; j > i; j--) { 7_jt =sr  
if (data[j] < data[lowIndex]) { mM?,e7Xhs  
lowIndex = j; 3 i>NKS  
} eE .wnn  
} .XeZjoJ$z  
SortUtil.swap(data,i,lowIndex); EJ<L,QH3  
} I Ij:3HP  
} hPG@iX|V  
)l m7ly8a|  
} t$VRNZ`dy  
"0 %f R"  
Shell排序: ?,v& o>*  
j(;ou?Uh  
package org.rut.util.algorithm.support; tg 'gR  
: 4-pnn  
import org.rut.util.algorithm.SortUtil; Dmy=_j?ej  
:~W(#T,$E  
/** [9 :9<#?o^  
* @author treeroot z ULH gG  
* @since 2006-2-2 PcZ<JJ16F$  
* @version 1.0 |unvDXx-  
*/ ,/V~T<FI  
public class ShellSort implements SortUtil.Sort{ pnx^a}|px  
adri02C/  
/* (non-Javadoc) H<ovIMd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c'VCCXe  
*/ $>_`.*I/  
public void sort(int[] data) { BT0;I  
for(int i=data.length/2;i>2;i/=2){ vyWx{ @  
for(int j=0;j insertSort(data,j,i); jz;{,F  
} 5$> buYF  
} CXz9bhn<4  
insertSort(data,0,1); p-(V2SP/)t  
} T1Z*>(M  
 Glx{Zu=  
/** OKau3T]  
* @param data Y^d#8^cP  
* @param j +.^pAz U}R  
* @param i 4 )}>dxv  
*/ l]t^MEoc8  
private void insertSort(int[] data, int start, int inc) { l'2vo=IQ  
int temp; FGc#_4SiL  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `S? _=JIX  
} !h}Vz  
} aA>!p{/x  
} y,jpd#Y  
ir\)Hz2P  
} }LX!dDuwA  
#fx"tx6  
快速排序: uuh._H}-  
.) %, R  
package org.rut.util.algorithm.support; ~^'t70 :D  
,+v(?5[6  
import org.rut.util.algorithm.SortUtil; x@O )QaBN!  
lF46W  
/** [z7]@v6b  
* @author treeroot z,dF Dl$  
* @since 2006-2-2 Z RwN#?x  
* @version 1.0 x+%> 2qgj"  
*/ NaQ~iY?  
public class QuickSort implements SortUtil.Sort{ OaoHN& "  
\f Kn} ]kG  
/* (non-Javadoc) ei1;@k/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b"td]H3h  
*/ pV:44  
public void sort(int[] data) { fh1-]$z`~  
quickSort(data,0,data.length-1); DW7Jk"\GH  
} 1_9Ka V  
private void quickSort(int[] data,int i,int j){ #ifjQ7(:  
int pivotIndex=(i+j)/2; wNFx1u^/)  
file://swap >XuPg(Ow  
SortUtil.swap(data,pivotIndex,j); }9z$72;Qdq  
u9c^YCBM  
int k=partition(data,i-1,j,data[j]); t(.vX  
SortUtil.swap(data,k,j); l`X?C~JhJ  
if((k-i)>1) quickSort(data,i,k-1); r~,3  
if((j-k)>1) quickSort(data,k+1,j); 9]G~i`QQ  
vGJw/ij'X  
} E"/k"1@  
/** XS&;8 PO  
* @param data 9 MQwc  
* @param i |KPNl\%ID  
* @param j /Gb)BJk!  
* @return }LEasj  
*/ Lew 2Z  
private int partition(int[] data, int l, int r,int pivot) { 7N vRZ!  
do{ |VyN>&r~6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); B'vIL'  
SortUtil.swap(data,l,r); 1Zo3K<*J  
} 5OFB[  
while(l SortUtil.swap(data,l,r); 0d~?|Nv -  
return l; /a-s9<  
} 3a U4Z|f~  
!T~uxeZ/;  
} md\Vw?PkU  
D=5%lL  
改进后的快速排序: Gw6!cp|/  
_]3#C[1L  
package org.rut.util.algorithm.support; nS.qK/.s  
g86^Z%c(k  
import org.rut.util.algorithm.SortUtil; DmB?.l-  
hS%oQ)zvE  
/** lPA}06hU  
* @author treeroot Ts=TaRwWf  
* @since 2006-2-2 \qG` ts  
* @version 1.0 CA$|3m9)NM  
*/ ose)\rM'  
public class ImprovedQuickSort implements SortUtil.Sort { w#L`|cYCm  
L1@<7?@X  
private static int MAX_STACK_SIZE=4096; 7}&vEc@w&  
private static int THRESHOLD=10; _a`/{M|  
/* (non-Javadoc) <{Rz1CMc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {[{jl G4H  
*/ s!F8<:FRJD  
public void sort(int[] data) { dg0WH_#  
int[] stack=new int[MAX_STACK_SIZE]; ,K&L/*  
Tz\v.&? $  
int top=-1; Q;m8 drU  
int pivot; ?c fFJl  
int pivotIndex,l,r; nx{X^oc8e  
rC/z8m3z  
stack[++top]=0; oHV!>K_D  
stack[++top]=data.length-1; {p(6bsn_#]  
NVf_#p"h  
while(top>0){ c47.,oTo  
int j=stack[top--]; CX5>/  
int i=stack[top--]; A*]sN8  
JRtDjZ4>  
pivotIndex=(i+j)/2; \y7\RV>>3b  
pivot=data[pivotIndex]; Oo>Uu{{  
\x8'K  
SortUtil.swap(data,pivotIndex,j); Gch3|e  
DsHm,dZ  
file://partition w(y 9y9r]  
l=i-1; criNeKa  
r=j; kp)1s>c  
do{ [ 4PiQyr  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); q((%sWp  
SortUtil.swap(data,l,r); 7$"5qJ{s  
} [ zCKJR  
while(l SortUtil.swap(data,l,r); A- #c1KU!  
SortUtil.swap(data,l,j); ^'b\OUty-  
g- INhzMu  
if((l-i)>THRESHOLD){ 7Mh!@Rd_V  
stack[++top]=i; ]0}NF  
stack[++top]=l-1; PnI_W84z  
} +' .o  
if((j-l)>THRESHOLD){ {Sc*AE&Y  
stack[++top]=l+1; .SWn/Kk  
stack[++top]=j; OZ<fQf.Gh}  
} B/JMH 1r  
MBol_#H  
} Fj&8wZ)v)  
file://new InsertSort().sort(data); [bBPs&7u  
insertSort(data); ?,eq86-M  
}  (S&D  
/** `cRRdD:dA  
* @param data ORIXcj]  
*/ ;s$ P?('  
private void insertSort(int[] data) { ECuNkmUI  
int temp; *E/CNMn=E  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); EPEn"{;U  
}  I$fm"N  
} `TDS 4Y  
} R]S!PSoL  
fQ2U |  
}  S^5Qhv  
M(Yt9}Z%Y  
归并排序: vH"^a/95|  
nc#} \  
package org.rut.util.algorithm.support; M&rbXi.  
lBG"COu  
import org.rut.util.algorithm.SortUtil; CG!9{&F  
@@6c{r^P  
/** |q\Rvt$d  
* @author treeroot !qs3fe<uh"  
* @since 2006-2-2 1#vi]CX  
* @version 1.0 !~}@Eoii4  
*/ r{Z4ifSl(  
public class MergeSort implements SortUtil.Sort{ mr XmM<  
i%r+/D)KvG  
/* (non-Javadoc) Z4T{CwD`D  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t8~isuiK  
*/ 2t#[$2mg\0  
public void sort(int[] data) { 6lQP+! EF  
int[] temp=new int[data.length]; RJD(c#r$  
mergeSort(data,temp,0,data.length-1); ooN?x31  
} >#5jO9  
mk3,ke8  
private void mergeSort(int[] data,int[] temp,int l,int r){ 9H cxL  
int mid=(l+r)/2; ZBc8 ^QZ  
if(l==r) return ; +,4u1`c|$  
mergeSort(data,temp,l,mid); ^ `[T0X  
mergeSort(data,temp,mid+1,r); 42PA?^xPw  
for(int i=l;i<=r;i++){ U ~8, N[  
temp=data; #sf1,k5'  
} TA"gU8YQ  
int i1=l; x\Kt}/97e  
int i2=mid+1; wQOIUvd  
for(int cur=l;cur<=r;cur++){ "Q1oSpF  
if(i1==mid+1) W`jKe-jF  
data[cur]=temp[i2++]; zm=|#f  
else if(i2>r) 9f3rMPVh(  
data[cur]=temp[i1++]; +!-U+W  
else if(temp[i1] data[cur]=temp[i1++]; !<5Wi)*  
else 4 :M}Vz-  
data[cur]=temp[i2++]; TmLfH d  
} 1Zgv+.  
} N9PEn[t@  
yO J|t#  
} j =PM]  
<*HsJwr)u  
改进后的归并排序: Rs "#gT  
\{}5VVw-S?  
package org.rut.util.algorithm.support; Lz`_&&6  
/k=k rAz.  
import org.rut.util.algorithm.SortUtil; D#d \1g  
SM[VHNr,-  
/** NrfAr}v'E  
* @author treeroot IMHt#M`  
* @since 2006-2-2 LOe l6Ui  
* @version 1.0 KzLkT7,y+  
*/ `&FfGftc  
public class ImprovedMergeSort implements SortUtil.Sort { 6@ =ipPCR  
mC!^`y)  
private static final int THRESHOLD = 10; 2%~+c|TH.)  
W$Z8AZ{E  
/* 23P7%\  
* (non-Javadoc) 8>!-|VSn  
* ~p\r( B7G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L?b;TjLe  
*/ z /f0 .RJ  
public void sort(int[] data) { *\$ko)x?c  
int[] temp=new int[data.length]; 88A,ll%  
mergeSort(data,temp,0,data.length-1); <y,c.\c!  
} \kC'y9k  
He}"e&K  
private void mergeSort(int[] data, int[] temp, int l, int r) { E&> 2=$~  
int i, j, k; SBamgc  
int mid = (l + r) / 2; jluv}*If  
if (l == r) OA&r8WK3  
return; Z#s-(wf  
if ((mid - l) >= THRESHOLD) /Ca M(^W   
mergeSort(data, temp, l, mid); G-Zn-I  
else HnY.=_G  
insertSort(data, l, mid - l + 1); (%*~5%l\  
if ((r - mid) > THRESHOLD) ]N6UY  
mergeSort(data, temp, mid + 1, r); 82yfPQ&UI  
else XPMvAZL  
insertSort(data, mid + 1, r - mid); fs8C ^Ik>~  
Ba9"IXKH  
for (i = l; i <= mid; i++) { lYy:A%yDT  
temp = data; |5\: E}1  
} ?)e6:T(  
for (j = 1; j <= r - mid; j++) { L^L.;1  
temp[r - j + 1] = data[j + mid]; \;!g@?CA  
} NtQ#su$  
int a = temp[l]; +A2}@k   
int b = temp[r]; Q57Z~EsF  
for (i = l, j = r, k = l; k <= r; k++) { >&)|fV&4  
if (a < b) { eyG[1EEU  
data[k] = temp[i++]; }XRRM:B|)(  
a = temp; q5>!.v   
} else { CZ ,2Rq  
data[k] = temp[j--]; &&te(DC\  
b = temp[j]; 6tup^Rlo;$  
} p?x]|`M  
} mxTuwx   
} U (A#}  
Sh7ob2  
/** kS)|oU K  
* @param data k~qZ^9QB~  
* @param l g>_d,#F  
* @param i /mnV$+BE  
*/ C.+:FY.H  
private void insertSort(int[] data, int start, int len) { gO kum_  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); /(Ryh6M  
} `5Em: 8 M  
} LO)p2[5#R  
} T@Th?  
} >!#or- C  
5h p)Z7  
堆排序: pY(S]i  
DK(8Ml:k  
package org.rut.util.algorithm.support; BV]$= e'  
jYsg'Rl  
import org.rut.util.algorithm.SortUtil; l1]'3]P(  
'#CYw=S+  
/** Z8WBOf*~e  
* @author treeroot g715+5z[  
* @since 2006-2-2 : W0;U  
* @version 1.0 VBe&of+  
*/ tj[-|h  
public class HeapSort implements SortUtil.Sort{ P.O/ZW>g  
@<44wMp  
/* (non-Javadoc) HkyN$1s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cDh\$7'b  
*/ J24H}^~na  
public void sort(int[] data) { wyv%c/WlS  
MaxHeap h=new MaxHeap(); ]}nX$xy  
h.init(data); opqf)C  
for(int i=0;i h.remove(); r+}<]?aT>-  
System.arraycopy(h.queue,1,data,0,data.length); da5fKK/s  
} fx/If  
^Rmrre`uU  
private static class MaxHeap{ N1X;&qZDd  
z2OXCZ*/  
void init(int[] data){ 2 m2$jp0  
this.queue=new int[data.length+1]; {)& b6}2h  
for(int i=0;i queue[++size]=data; avxI%%|  
fixUp(size); PpR eqmo  
} );fPir?+  
} Hu$JCB-%  
wy?Hp*E  
private int size=0; @gihIysf  
o^<W3Z  
private int[] queue;  fG|+ !  
 Rlx  
public int get() { wbh^ZMQ  
return queue[1]; seNH/pRb  
} qF4DX$$<  
_H$Z }2g<z  
public void remove() { )Tad]Hd"W  
SortUtil.swap(queue,1,size--); K?,`gCN}v  
fixDown(1); Hv|(V3-  
} {fu[&@XV  
file://fixdown ufS0UD8%H  
private void fixDown(int k) { "nC=.5/$  
int j; /{nZ I_v#  
while ((j = k << 1) <= size) { <`*v/D7\02  
if (j < size %26amp;%26amp; queue[j] j++; 1DM$FG_Z-  
if (queue[k]>queue[j]) file://不用交换 ^%Fn|U\u  
break; 7dXh,sD  
SortUtil.swap(queue,j,k); luV_  
k = j; n_-k <3  
} J*]JH{  
} =8x-+u5}rK  
private void fixUp(int k) { M pLn)  
while (k > 1) { .;NoKO7)  
int j = k >> 1; ??XtN.]7  
if (queue[j]>queue[k]) wm/>_  
break; X$ 76#x  
SortUtil.swap(queue,j,k); )LE#SGJP  
k = j; _<l9j;6  
} @wW)#!Mou  
} $ q$\  
;%xG bg!lg  
} e}q!m(K]e-  
Zz56=ZX*_  
} 0p!N'7N  
`;#I_R_K  
SortUtil: StM)lVeF  
pqxBu  
package org.rut.util.algorithm; DP4l %2m0  
}t5pz[zl  
import org.rut.util.algorithm.support.BubbleSort; 'K3%@,O  
import org.rut.util.algorithm.support.HeapSort; {m 5R=22^  
import org.rut.util.algorithm.support.ImprovedMergeSort; LX iis)1  
import org.rut.util.algorithm.support.ImprovedQuickSort; ? p^':@=  
import org.rut.util.algorithm.support.InsertSort; Y# ?M%I%j  
import org.rut.util.algorithm.support.MergeSort; v*EErQML8b  
import org.rut.util.algorithm.support.QuickSort; d,%@*v]S  
import org.rut.util.algorithm.support.SelectionSort; KS(Ms*k;'  
import org.rut.util.algorithm.support.ShellSort; Zj2tQ}N  
QNCG^ub  
/** v@ OM  
* @author treeroot _c6 zzGtH  
* @since 2006-2-2 =s[P =dU  
* @version 1.0 {$^Lb4O[V  
*/ /R)(u@jk  
public class SortUtil { ?[S{kMb2  
public final static int INSERT = 1; "AMsBvzgo  
public final static int BUBBLE = 2; bL18G(5  
public final static int SELECTION = 3; &?B\(?*  
public final static int SHELL = 4; )J!=X`b  
public final static int QUICK = 5; / S)&dN`  
public final static int IMPROVED_QUICK = 6; T|lyjX$Q]9  
public final static int MERGE = 7; zd#/zUPI  
public final static int IMPROVED_MERGE = 8; h OF>Dj  
public final static int HEAP = 9; Y%]&h#F  
Cr%6c3aQ  
public static void sort(int[] data) { Nyo,6 AA  
sort(data, IMPROVED_QUICK); &1,qC,:!  
} qGc>+!y  
private static String[] name={ DSx D531[A  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" +G>;NiP_  
}; Gzu $  
t!}?nw%$  
private static Sort[] impl=new Sort[]{ Y4n; [nHQ(  
new InsertSort(), ~yuj;9m3  
new BubbleSort(), 0i65.4sK  
new SelectionSort(), jYJfo<  
new ShellSort(), $)Pmr1==  
new QuickSort(), *`.4M)Ym~  
new ImprovedQuickSort(), 3ZU<u;  
new MergeSort(), &y=~:1&f  
new ImprovedMergeSort(), pM'AhzS  
new HeapSort() oFUP`p%[  
}; JIyIQg'5i  
LuIs4&[EW  
public static String toString(int algorithm){ \m;"KyP+  
return name[algorithm-1]; xT1{O`  
} D^W?~7e ^r  
Z]I yj 97  
public static void sort(int[] data, int algorithm) { OM 5h>\9  
impl[algorithm-1].sort(data); haMt2S2_B:  
} za@`,Yq  
{BKr/) H  
public static interface Sort { H&zhYKw  
public void sort(int[] data); S vR? nN|  
} 4`+hX'  
Oy/+uw^  
public static void swap(int[] data, int i, int j) { H Ql_ /:Wx  
int temp = data; #s'  
data = data[j]; ,l_n:H+"F  
data[j] = temp; y*Wl(w3  
} v J.sa&\H  
} Skd,=r  
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