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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。 C%LRb{|d  
插入排序: D2o,K&V  
3fJ GJW!zu  
package org.rut.util.algorithm.support; f>k<I[C<  
]iewukB4  
import org.rut.util.algorithm.SortUtil; isaDIl;L/  
/** a %"mgCB  
* @author treeroot '!*,JG5_  
* @since 2006-2-2 .lVC>UT  
* @version 1.0 jM8e2z3  
*/ i1]*5;q  
public class InsertSort implements SortUtil.Sort{ $Q,Fr; B  
}5~|h%  
/* (non-Javadoc) 8OoKP4,;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `mTpL^f  
*/ xSFY8  
public void sort(int[] data) { VG*Tdaua~  
int temp; C~PrIM?  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lf4V; |!^  
} 3+mC96wN  
} OOy]:t4 /  
} ~Zbr7zVn  
!|hxr#q=4  
} t\ J5np  
M>+FIb(  
冒泡排序: ?-CZJr  
',L>UIXw  
package org.rut.util.algorithm.support; 0 e 1W&  
SoZ$1$o2  
import org.rut.util.algorithm.SortUtil; Mg? ^5`*  
cn&\q.!fh  
/**  ]~g6#@l  
* @author treeroot J%d\ 7  
* @since 2006-2-2 BdcTKC  
* @version 1.0 QeP8Vl&e:  
*/ ZS0=xS5q)  
public class BubbleSort implements SortUtil.Sort{ C$o#zu q -  
ydo"H9NOS  
/* (non-Javadoc) qgd#BJ=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R)% Jr.U  
*/ +]^6&MqO  
public void sort(int[] data) { Pt~mpRl H  
int temp; R7: >'*F  
for(int i=0;i for(int j=data.length-1;j>i;j--){ h|h-<G?>  
if(data[j] SortUtil.swap(data,j,j-1); [)V&$~xW  
} qdoJIP{  
} d;` bX+K  
} InDISl]  
} WZq0$:I;R  
IXYSZ)z  
} Fm(~Vt;%u  
(R)\  
选择排序: Kbjt  CI7  
mo1(dyjx  
package org.rut.util.algorithm.support; M`!\$D  
x&qC~F*QR%  
import org.rut.util.algorithm.SortUtil; ycAQHY~n  
2_lgy?OE`  
/** ,-7w\%*  
* @author treeroot +Bk d  
* @since 2006-2-2 /mLOh2 T  
* @version 1.0 P_11N9C  
*/ #$p&J1   
public class SelectionSort implements SortUtil.Sort { p9w<|ZQ]:  
llVm[7  
/* E!.>*`)?.  
* (non-Javadoc) 3vx*gfr3  
* ^CZ!rOSv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (jYHaTL6Y'  
*/ 28 qTC?  
public void sort(int[] data) { @, v'V!  
int temp; (`+%K_  
for (int i = 0; i < data.length; i++) { II$B"-  
int lowIndex = i; {@K>oaZ  
for (int j = data.length - 1; j > i; j--) { ZuIr=`"j  
if (data[j] < data[lowIndex]) { Vae}:8'}  
lowIndex = j; Pg[XIfBva  
} ZdbZ^DUR<(  
} ^`ah\L  
SortUtil.swap(data,i,lowIndex); : vN'eL|#  
} *Dx&}"  
} b#;%TbDF  
` #Qlr+X  
} ^_FB .y%  
^|yw)N]Q/  
Shell排序: s=0z%~H  
-*8|J;  
package org.rut.util.algorithm.support; 9\9:)q  
w"Gci~]bXU  
import org.rut.util.algorithm.SortUtil; ">='l9  
MY>mP  
/** G gmv(!  
* @author treeroot HGqT"N Jr  
* @since 2006-2-2 YTH3t] &  
* @version 1.0 !{'C.sb?~  
*/ Cf@~W)K  
public class ShellSort implements SortUtil.Sort{ Le#>uWM  
,CiN@T \&  
/* (non-Javadoc) m$^Wyk}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?wzE+p-  
*/ ~,[<R  
public void sort(int[] data) { ``*iK  
for(int i=data.length/2;i>2;i/=2){ S<do.{|p[  
for(int j=0;j insertSort(data,j,i); 1<y(8C6  
} y[M<x5  
} 13 `Or(>U  
insertSort(data,0,1); AlP}H~|M7  
} sPMCN's  
d{^9` J'  
/** Zpfsh2`  
* @param data b1An2 e[  
* @param j 'qR)f\em  
* @param i VJW%y)_[  
*/ v@_}R_pX  
private void insertSort(int[] data, int start, int inc) { D@9adwQb  
int temp; )+;Xfftz  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); W"j&':xD  
} JC| j*x(k/  
} (+SfDL$m  
} :x"Q[079  
b CWSh~  
} [n%=2*1p  
J~.8.]gXW  
快速排序: DIrQ5C  
^0oOiZs  
package org.rut.util.algorithm.support; %K0 H?^.  
F@ Sw  
import org.rut.util.algorithm.SortUtil; FbH 1yz  
DZPg|*KT  
/** \NE~k)`4j%  
* @author treeroot klkshlk d  
* @since 2006-2-2 h- )tWJ c  
* @version 1.0 'ii5pxeNI  
*/ SUv(MA&  
public class QuickSort implements SortUtil.Sort{ XcN"orAo  
tzH~[n,  
/* (non-Javadoc) pC=kvve  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )4h4ql W  
*/ mn5y]:;`  
public void sort(int[] data) { Rr>nka)U  
quickSort(data,0,data.length-1); < cNJrer  
} Uwj|To&QR  
private void quickSort(int[] data,int i,int j){ Y!!w*G9b  
int pivotIndex=(i+j)/2; :SBB3G)|  
file://swap h = <x%sie  
SortUtil.swap(data,pivotIndex,j); mdzUL d5J  
W(~7e?fO  
int k=partition(data,i-1,j,data[j]);  862e  
SortUtil.swap(data,k,j); bU$4"_eA B  
if((k-i)>1) quickSort(data,i,k-1); eK8y'VY  
if((j-k)>1) quickSort(data,k+1,j); pZeJ$3@vk  
7T[Kjn^{Oj  
} 2c)Ez?  
/** V{qpha4'P  
* @param data 94uAt&&b(  
* @param i },r9f MJ  
* @param j _x+)Tv  
* @return CEQs}bz  
*/ JU>F&g/|  
private int partition(int[] data, int l, int r,int pivot) { ^l;N;5L  
do{ yLpsK[)}\  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); sVT:1 kI  
SortUtil.swap(data,l,r); t4Q&^AC  
} &YiUhK  
while(l SortUtil.swap(data,l,r); [2*?b/q3J  
return l; _+B{n^ {  
} ?$v*_*:2h  
E@.daUoB  
} wqx9  
W}6OMAbsE;  
改进后的快速排序: (^!$m7  
jWpm"C  
package org.rut.util.algorithm.support; Vt4KG+zm  
UnVYGch  
import org.rut.util.algorithm.SortUtil; -l(G"]tRB  
CdZS"I  
/** g \;,NW^  
* @author treeroot :{ 8,O-  
* @since 2006-2-2 8uh^%La8b.  
* @version 1.0 YY4XCkt  
*/ k-CW?=  
public class ImprovedQuickSort implements SortUtil.Sort { }Od=WQv+  
#(Xv\OE  
private static int MAX_STACK_SIZE=4096; AHB_[i'>7  
private static int THRESHOLD=10; z^,P2kqK_  
/* (non-Javadoc) K;L6<a A#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !c2<-3e  
*/ O su 75@3  
public void sort(int[] data) { $^K12Wcp-  
int[] stack=new int[MAX_STACK_SIZE]; lVptA3F  
xR~9|H9a  
int top=-1; _keI0ML-#  
int pivot; WALK@0E  
int pivotIndex,l,r; }uFV\1  
}5b,u6  
stack[++top]=0; KA/ ~q"N  
stack[++top]=data.length-1; (C9{|T+h  
:|&S7 &l]  
while(top>0){ ~rfUqM]I   
int j=stack[top--]; tO}Y=kZa{  
int i=stack[top--]; TdKo"H*C  
qsG}A  
pivotIndex=(i+j)/2; yd=NafPM  
pivot=data[pivotIndex]; ;;>G}pG  
PP{s&(  
SortUtil.swap(data,pivotIndex,j); QHHj.ZY  
3UgPVCT  
file://partition 1sNZl&  
l=i-1; ]K-B#D{P  
r=j; tBjMm8lgb  
do{ WupONrH1e  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); $ ?*XPzZ  
SortUtil.swap(data,l,r); $z,rN\[  
} 49!(Sa_]j  
while(l SortUtil.swap(data,l,r); P0c6?K6 j  
SortUtil.swap(data,l,j); Wr6y w#  
yc7 "tptfF  
if((l-i)>THRESHOLD){ eW\C@>Ke  
stack[++top]=i; bbG!Fg=qQ?  
stack[++top]=l-1; jJ7"9  
} SdXAL  
if((j-l)>THRESHOLD){ F 9J9zs*,  
stack[++top]=l+1; 0c GjOl  
stack[++top]=j; p)c"xaTP#F  
} Ha/Gn !l  
k &6$S9  
} 70F(`;  
file://new InsertSort().sort(data); ? 4v"y@v  
insertSort(data); X,`^z,M%I  
} mV;)V8'  
/** gg?O0W{  
* @param data LZ4Z]!V  
*/ R+<M"LriR&  
private void insertSort(int[] data) { =<.h.n  
int temp; j"Z9}F@  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 5E!Wp[^  
} ?WBA:?=$58  
} 0?w4  
} AVO$R\1YR  
O_P8OA#|  
} fX/k;0l  
4c,{Js  
归并排序: 91oAg[@4G  
+![\7  
package org.rut.util.algorithm.support; l<UJ@XID$  
f)#nXTXeC  
import org.rut.util.algorithm.SortUtil; -~TgA*_5]  
|>v8yS5  
/** Gj- *D7X5  
* @author treeroot MT^krv(G  
* @since 2006-2-2 F3=iyiz6  
* @version 1.0 ? oQ_qleuo  
*/ *?R<gWCF  
public class MergeSort implements SortUtil.Sort{ g E$@:j  
AcIw; c:  
/* (non-Javadoc) K*aGz8N  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) umI6# Vd`=  
*/ 4mci@1K#^  
public void sort(int[] data) { U&OE*dq  
int[] temp=new int[data.length]; `{+aJ0<S  
mergeSort(data,temp,0,data.length-1); >U6 2vX"  
} qlg?'l$03)  
I,7n-G_'  
private void mergeSort(int[] data,int[] temp,int l,int r){ oLc  
int mid=(l+r)/2; FQBAt0  
if(l==r) return ; ~+&Z4CYb  
mergeSort(data,temp,l,mid); 4*?JU v  
mergeSort(data,temp,mid+1,r); 9t"/@CH{  
for(int i=l;i<=r;i++){ 0#!Z1:Y  
temp=data; QN8.FiiD  
} ~+anI  
int i1=l; Ixr#zt$T-G  
int i2=mid+1; /rzZU}3[  
for(int cur=l;cur<=r;cur++){ +<7a$/L?4  
if(i1==mid+1) lQt* LWd[  
data[cur]=temp[i2++]; (R^Ca7F  
else if(i2>r) a3B^RbDP&8  
data[cur]=temp[i1++]; m ol|E={si  
else if(temp[i1] data[cur]=temp[i1++]; 9D H}6fO  
else R zn%!d^$>  
data[cur]=temp[i2++]; !^IAn  
} x`Ik747^v  
} (I ~r~5^  
2|}KBny  
} 7rjS.  
VN >X/  
改进后的归并排序: Z:Nm9m  
k(R&`  
package org.rut.util.algorithm.support; 3sz?49tX  
i1-wzI  
import org.rut.util.algorithm.SortUtil; 95^-ptO{1`  
(a@}J.lL  
/** (6~~e$j  
* @author treeroot )kt,E}609  
* @since 2006-2-2 `dm}|$X|  
* @version 1.0 $?dutbE  
*/ @WO>F G3  
public class ImprovedMergeSort implements SortUtil.Sort { {PQ!o^7y  
DS>qth  
private static final int THRESHOLD = 10; Sj9NhtF]f  
M|\C@,F]8  
/* hgI;^ia  
* (non-Javadoc) |C3~Q{A  
* _?~)B\@~0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >o8N@`@VK-  
*/ FW,@.CX  
public void sort(int[] data) { t.6gyrV7><  
int[] temp=new int[data.length]; N-<m/RS  
mergeSort(data,temp,0,data.length-1); +I_p\/J?w/  
} S#f}mb0,  
=J827c{.  
private void mergeSort(int[] data, int[] temp, int l, int r) { D",~?  
int i, j, k; &46 Ro|XE`  
int mid = (l + r) / 2; ?%wM8?  
if (l == r) p<AzpkU,A  
return; Vv~:^6il  
if ((mid - l) >= THRESHOLD) `ILO]+`5  
mergeSort(data, temp, l, mid); :yE7jXB  
else }@NT#hD  
insertSort(data, l, mid - l + 1); 5d5q0bb  
if ((r - mid) > THRESHOLD) 07qL@![!  
mergeSort(data, temp, mid + 1, r); ZY{zFg9  
else r^$WX@ t&  
insertSort(data, mid + 1, r - mid); $ZfoJR]%  
RMO6kbfP  
for (i = l; i <= mid; i++) { %N0cp@Vz  
temp = data; 2` j#eB1  
} s5D<c'-  
for (j = 1; j <= r - mid; j++) { )ZQML0}P;  
temp[r - j + 1] = data[j + mid]; D$/*Z5Z)]  
} h;Se.{  
int a = temp[l]; AZ& ]@Ao  
int b = temp[r]; 5Q.z#]L g  
for (i = l, j = r, k = l; k <= r; k++) { ,`;Dre  
if (a < b) { O*y@4AR"S  
data[k] = temp[i++]; dRPX`%J  
a = temp; &~a/Upz0]_  
} else { 6/&aBE=  
data[k] = temp[j--]; /6d:l>4  
b = temp[j]; 0 |Y'@&  
} ;O Y*`(Id  
} N77EM  
} ^. ; x  
XY1b_uY  
/** `o,D[Jd  
* @param data LSN%k5G7.  
* @param l Sn ~|<Vf  
* @param i PXJ`<XM  
*/ +oe%bk|A  
private void insertSort(int[] data, int start, int len) { 84UI)nE:Q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?~s23%E  
} *d;D~"E<@  
} }~3 %KHT  
} v|K<3@J  
} 2[Q/|D}}|  
L2m~ GnP|?  
堆排序: u=9)A9  
a<ztA:xt|1  
package org.rut.util.algorithm.support; +\@WOs  
yHt `kb2  
import org.rut.util.algorithm.SortUtil; O]N 8Q H  
~Y /55uC  
/** 1E|~;wo\  
* @author treeroot rP7~ R  
* @since 2006-2-2 ! fSM6Vo  
* @version 1.0 Bq)aA)gF  
*/ d:1TSJff%/  
public class HeapSort implements SortUtil.Sort{ Nw=mSW^E  
2E d  
/* (non-Javadoc) X__>r ?oJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) + ZxG<1&  
*/ AB1,G|L  
public void sort(int[] data) { 1} h''p  
MaxHeap h=new MaxHeap(); #}U*gVYe  
h.init(data); ^lYa9k  
for(int i=0;i h.remove(); 1L:sck5k  
System.arraycopy(h.queue,1,data,0,data.length); UM QsYD)  
} 56Gc[<nR  
j/Rm~!q  
private static class MaxHeap{ 0nV|(M0lu?  
=f*Wj\  
void init(int[] data){ eFiUB  
this.queue=new int[data.length+1]; &@anv.D  
for(int i=0;i queue[++size]=data; G,6Zy-Y9  
fixUp(size); O.g!k"nas&  
} 9X6l`bo'  
} Jf|6 FQo&  
eX9Hwq4X44  
private int size=0; eaGd:(  
5$C]$o}  
private int[] queue; M7 Z9(3Va  
07:N)y,  
public int get() { aur4Ky> :  
return queue[1]; V=LJ_T"z0  
} si|DxDx  
;`P}\Q{  
public void remove() { d:V6.7>,  
SortUtil.swap(queue,1,size--); /o)o7$6Q  
fixDown(1); fX[6  {  
} Z?}yPs Ob  
file://fixdown "2~%-;c  
private void fixDown(int k) { RN"O/b}qQ  
int j; %W [#60  
while ((j = k << 1) <= size) { O3>m,v  
if (j < size %26amp;%26amp; queue[j] j++; WFBVAD  
if (queue[k]>queue[j]) file://不用交换 ]@D#<[5\  
break; 39+6ZTqx  
SortUtil.swap(queue,j,k); ca{u"n  
k = j; ^&mJDRe  
} %Qc5_of  
} #^FDFl  
private void fixUp(int k) { ILQB%0!  
while (k > 1) { D+"-(k  
int j = k >> 1; &+Iv"9  
if (queue[j]>queue[k]) 'QrvkQ  
break; ZSo#vQ  
SortUtil.swap(queue,j,k); %tRQK$]c  
k = j; ?\D=DIN-r  
} Cm5:_K`;]  
} R^*h|7)E  
Z1t?+v+Ro*  
} dY'mY~Tv  
t@(`24  
} Mx<? c  
KS6H`Mm}/  
SortUtil: UFLN/  
;F:~HrxT}  
package org.rut.util.algorithm; M_Qv{   
J0eJRs  
import org.rut.util.algorithm.support.BubbleSort; ,GH;jw)P  
import org.rut.util.algorithm.support.HeapSort; :GaK.W q  
import org.rut.util.algorithm.support.ImprovedMergeSort; iO,_0Y4  
import org.rut.util.algorithm.support.ImprovedQuickSort; D@cv{ _M/  
import org.rut.util.algorithm.support.InsertSort; X/D^?BKC  
import org.rut.util.algorithm.support.MergeSort; t'{\S_  
import org.rut.util.algorithm.support.QuickSort; U0Y;*_>4  
import org.rut.util.algorithm.support.SelectionSort; fZ*LxL  
import org.rut.util.algorithm.support.ShellSort; .<Lbv5m  
P e\AH  
/** RrPo89o  
* @author treeroot +TQMA >@g<  
* @since 2006-2-2 !k= ~5)x  
* @version 1.0 TL?(0]H fe  
*/ 2unaK<1s  
public class SortUtil { MzY~-74aF  
public final static int INSERT = 1; dD Zds k+!  
public final static int BUBBLE = 2; HaUfTQ8  
public final static int SELECTION = 3; ZM~kc|&  
public final static int SHELL = 4; PU6Sa-fQ2,  
public final static int QUICK = 5; APC,p,"  
public final static int IMPROVED_QUICK = 6; l-Q.@hG  
public final static int MERGE = 7; EM.7,;|N  
public final static int IMPROVED_MERGE = 8; X}/{90UD  
public final static int HEAP = 9; Y8Bc &q}  
hLZ<h7:  
public static void sort(int[] data) { opKk#40  
sort(data, IMPROVED_QUICK); (np %urx!  
} EAgNu?L  
private static String[] name={ .[ E"Kb}=  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" DeAi'"&  
}; J9kmIMq-C  
Pa{)@xT  
private static Sort[] impl=new Sort[]{ s L9,+  
new InsertSort(), 7HpfHqJ7  
new BubbleSort(), <#hltPyh  
new SelectionSort(), 0x-58i0  
new ShellSort(), [CBhipoc  
new QuickSort(), @Y~R*^n"}  
new ImprovedQuickSort(), nJvDkh#h1  
new MergeSort(), !w!}`|q  
new ImprovedMergeSort(), vtv^l 3  
new HeapSort() cNX0.7Ls  
}; eu]t.Co[X  
z g@,s"`>  
public static String toString(int algorithm){ TJB) ]d<  
return name[algorithm-1]; C{i9~80n  
} ),<E-Ub  
J< E"ZoY  
public static void sort(int[] data, int algorithm) { |b@H]c;"  
impl[algorithm-1].sort(data); jWg7RuN  
} 6%p$C oR  
98%M`WY  
public static interface Sort { ",b3C.  
public void sort(int[] data); S~8w-lG!  
} X_7cwPY  
zH1pW(  
public static void swap(int[] data, int i, int j) { _e ]jz2j  
int temp = data; tA?cHDp4E  
data = data[j]; W-QBC- 3  
data[j] = temp; {M7`z,,[  
} Gj~1eS  
} $#cZJ@;]  
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