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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。 _2Sb?]Xn  
插入排序: PW(4-H  
1iWo* +5  
package org.rut.util.algorithm.support;  W7I.S5  
zfvMH"1  
import org.rut.util.algorithm.SortUtil; :3`6P:^  
/** C/Vs+aW n  
* @author treeroot +`pS 7d  
* @since 2006-2-2 OiI[w8  
* @version 1.0 #<ppiu$  
*/ r|$@Wsb?#  
public class InsertSort implements SortUtil.Sort{ ~(E.$y7P  
m~;fklX S  
/* (non-Javadoc) tL0<xGI5^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) qfp,5@p  
*/ b&:>v9U  
public void sort(int[] data) { %lVc7L2]  
int temp; lej-,HX  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ~`'!nzP5H  
} 2NS(;tBB0  
} 'n`+R~Kkh  
} aRSGI ja<L  
C[f'1O7  
} Xup rl2+  
w,hl<=:(FB  
冒泡排序: eQh@.U*S)  
]IbX<  
package org.rut.util.algorithm.support; {"X n`@Y  
|l\&4/SJ  
import org.rut.util.algorithm.SortUtil; -# 0(Jm'  
Ewjzm,2  
/** N{L'Q0!  
* @author treeroot H&K(,4u^  
* @since 2006-2-2 rQ~7BlE  
* @version 1.0 9>gxJ7pY  
*/  k I {)"  
public class BubbleSort implements SortUtil.Sort{ l,cnM r^.W  
\Eq,4-q  
/* (non-Javadoc) up+W[#+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9Q{-4yF9k  
*/ yV=Ku  
public void sort(int[] data) { p=F!)TnJN  
int temp; BJGL &N  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 5,/rh,?  
if(data[j] SortUtil.swap(data,j,j-1); N ]KS\  
} I'&#pOB  
} <a9<rF =r  
} L%G/%*7;c  
} VyQ@. Lm  
&)UZ9r`z  
} oNW.-gNT  
#-76E  
选择排序: 3r{3HaN(^'  
>uVo 'S.  
package org.rut.util.algorithm.support; ~s.~X5  
Yj%hgb:)  
import org.rut.util.algorithm.SortUtil; i?+ZrAx>  
?:@13wm  
/** |wF_CZ*1  
* @author treeroot #2*l"3.$.R  
* @since 2006-2-2 P2HR4`c  
* @version 1.0 ;U7o)A;  
*/ 9a\H+Y~  
public class SelectionSort implements SortUtil.Sort { Ziclw)   
Swugt"`nN  
/* f uzz3#  
* (non-Javadoc) m]C|8b7Y  
* iBCZx>![;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6T-h("t  
*/ ]=X6* E*/E  
public void sort(int[] data) { s98Jh(~  
int temp; _=,\uIrk  
for (int i = 0; i < data.length; i++) { ,1xX`:  
int lowIndex = i; =;9 %Q{  
for (int j = data.length - 1; j > i; j--) { MW^(  
if (data[j] < data[lowIndex]) { ?D 8<}~Do  
lowIndex = j; EPEy60Rx5  
} Fjnp0:p9X  
} 'p%aHK{  
SortUtil.swap(data,i,lowIndex); m+66x {M2c  
} Ck`-<)uN  
} E}^np[u7  
w;;yw3  
} ^\<nOzU?  
\X3Q,\H @  
Shell排序: JONfNb+  
91I6-7# Xt  
package org.rut.util.algorithm.support; Vq8G( <77  
U.XvS''E  
import org.rut.util.algorithm.SortUtil; YUGE>"{  
fU/&e^, 's  
/** zN3[W`q+m  
* @author treeroot e"=/zZH3  
* @since 2006-2-2 %"<|u)E  
* @version 1.0 o%EzK;Df  
*/ /l.:GH36f  
public class ShellSort implements SortUtil.Sort{ 4OX2GH=W  
qq Vjx?bKe  
/* (non-Javadoc) W=E+/ZvPt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5OHg% ^  
*/ [{!K'V  
public void sort(int[] data) { X`/GiYTu  
for(int i=data.length/2;i>2;i/=2){ @wvgMu  
for(int j=0;j insertSort(data,j,i); b#uNdq3  
} n*gr(S  
} RIC\f_Dv  
insertSort(data,0,1); _v/w ,z  
} ;$a+ >  
W4OL{p-\/  
/** Uu_g_b:z  
* @param data 9Wu c1#  
* @param j C8{bqmlm@  
* @param i + 6noQYe  
*/ t`M4@1S"'  
private void insertSort(int[] data, int start, int inc) { Cs:?9G  
int temp; V/.Na(C~  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 1iA0+Ex(j  
} Fb2,2Px  
} 3!l+) g  
} }na0  
\eF _Xk[  
} 9f#~RY|#m  
`}r)0,Z}3  
快速排序: xL&evG#  
5taR[ukM  
package org.rut.util.algorithm.support; %*}h{n  
MQc<AfW3/  
import org.rut.util.algorithm.SortUtil; N_:H kI6  
bA_/ 6r)u  
/** HbI'n,+  
* @author treeroot 7`s* {  
* @since 2006-2-2 -1_WE/Ps  
* @version 1.0 O'Mo/ u1-  
*/ us5<18 M5  
public class QuickSort implements SortUtil.Sort{ Fe[)-_%G  
h6CAd-\x\  
/* (non-Javadoc) !Y8+ Z&^2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) GyC/39<P  
*/ #r|qi tL3  
public void sort(int[] data) { R\a6 #u3  
quickSort(data,0,data.length-1); ._E 6?  
} =,B Dd$e  
private void quickSort(int[] data,int i,int j){ X!b+Dk  
int pivotIndex=(i+j)/2; qix$ }(P  
file://swap VGY x(  
SortUtil.swap(data,pivotIndex,j); k~0#Iy_{M  
r*q  
int k=partition(data,i-1,j,data[j]); cv{icz,%w  
SortUtil.swap(data,k,j); R7o'V* d  
if((k-i)>1) quickSort(data,i,k-1); /3`yaYkSh  
if((j-k)>1) quickSort(data,k+1,j); +Rj8 "p$K  
; Sd== *  
} &%UZ"CcA  
/** c$.Zg=  
* @param data  ?v z[Zi  
* @param i BS.5g<E2q  
* @param j `<3%`4z/  
* @return >]L\Bw  
*/ C3K":JB  
private int partition(int[] data, int l, int r,int pivot) { !V'~<&  
do{ ptc.JB6  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); } =p e;l  
SortUtil.swap(data,l,r); n #l~B@  
} :@RX}rKG  
while(l SortUtil.swap(data,l,r); dO1h1yJJ  
return l; SHc?C&^S  
} f`s.|99Y  
aMJW__,  
} ~W2Od2p !  
B:>>D/O  
改进后的快速排序: ?NVX# t'  
[;C|WTYSL  
package org.rut.util.algorithm.support; u?F^gIw  
O:]e4r,'  
import org.rut.util.algorithm.SortUtil; w t6&N{@  
0{OafL8&l  
/** /;5/7Bvj  
* @author treeroot oO3X>y{gN  
* @since 2006-2-2 { v  [  
* @version 1.0 Al3*? H&  
*/ ` t>A~.f  
public class ImprovedQuickSort implements SortUtil.Sort { !gm@QO cF  
h]]B @~  
private static int MAX_STACK_SIZE=4096; "C.cU  
private static int THRESHOLD=10; )Z*nm<=  
/* (non-Javadoc) N;HG@B!m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zcy`8&{A<?  
*/ y]okOEV0  
public void sort(int[] data) { S l`F`  
int[] stack=new int[MAX_STACK_SIZE]; F-X L  
Kr'Yz!  
int top=-1; p[K!.vOt+  
int pivot; tZ.hSDH  
int pivotIndex,l,r; z41v5rB4  
3s0 I<cL  
stack[++top]=0; ~c=F$M^"c  
stack[++top]=data.length-1; #Q1 |]  
<74r  
while(top>0){ V}MRdt7  
int j=stack[top--]; lt("yqBu  
int i=stack[top--]; ATWa/"l(H-  
nh]HEG0CZJ  
pivotIndex=(i+j)/2; eMLcm ZJR  
pivot=data[pivotIndex]; &X6hOc:``\  
cX#U_U~d  
SortUtil.swap(data,pivotIndex,j); #Ibpf ,  
Gn%"B6  
file://partition (]nX:t  
l=i-1; $!vK#8-&{  
r=j; z?Cez*.h>  
do{ ;LC?3.  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); (@Kc(>(: Y  
SortUtil.swap(data,l,r); p=[SDk`  
} m@W>ku  
while(l SortUtil.swap(data,l,r); z?t75#u9.  
SortUtil.swap(data,l,j); gh-i| i,  
-Rwx`=6tV  
if((l-i)>THRESHOLD){ #]h&GX  
stack[++top]=i; IAJ+n0U  
stack[++top]=l-1; C{>dE:*K^  
} ZUakW3f  
if((j-l)>THRESHOLD){ &bigLe  
stack[++top]=l+1; FY)US>  
stack[++top]=j; .JBTU>1]_n  
} C;%1XFzM  
X.V4YmZ- ;  
} bZ#5\L2  
file://new InsertSort().sort(data); 6MpV ,2:>  
insertSort(data); q8}he~a  
} NcX`*18  
/** 4>Y*owa4  
* @param data Nj.;mr<  
*/ l(HxZlHr  
private void insertSort(int[] data) { SPp|/ [i7  
int temp; _h I81Lzq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); HLCI  
} hOYP~OR  
} NFPWh3),f  
} lMgPwvs'  
V0G[f}tm'  
} 3pe1"maP  
dwouw*8  
归并排序: VHG}'r9KC%  
:m<#\!?  
package org.rut.util.algorithm.support; |_hIl(6F5N  
&YBZuq2?  
import org.rut.util.algorithm.SortUtil; kz G W/  
`i!fg\qnK  
/** V ONC<wC  
* @author treeroot V@nZ_.  
* @since 2006-2-2 L9]d$ r"  
* @version 1.0 }^ =f%EjV  
*/ DUwms"I,%  
public class MergeSort implements SortUtil.Sort{ Os*s{2OvO  
qYQ vjp  
/* (non-Javadoc) z 'V$)U$f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F<^f6z8  
*/ pwRCfR)"X  
public void sort(int[] data) { +i[vJRLxl~  
int[] temp=new int[data.length]; (|pM^+  
mergeSort(data,temp,0,data.length-1); +~sqv?8  
} dU2:H}  
0]zMb^wo  
private void mergeSort(int[] data,int[] temp,int l,int r){ QQt4pDir>  
int mid=(l+r)/2; ?XV3Y3  
if(l==r) return ; o+Mc%O Z  
mergeSort(data,temp,l,mid); et/v/Hvw1  
mergeSort(data,temp,mid+1,r); 03.\!rZZ  
for(int i=l;i<=r;i++){ $}fY B/  
temp=data; mNsd&Rk'  
} aMGyV"6(-6  
int i1=l; F\jawoO9  
int i2=mid+1; 0 Bk-)z|V  
for(int cur=l;cur<=r;cur++){ viJP6fh  
if(i1==mid+1) Yy;BJ_  
data[cur]=temp[i2++]; S%e)br}  
else if(i2>r) 1B@7#ozWA?  
data[cur]=temp[i1++]; 5?0~7^de  
else if(temp[i1] data[cur]=temp[i1++]; Pj_*,L`mZ  
else -`NzBuV$2,  
data[cur]=temp[i2++]; ,YJn=9pTl  
} 9ji`.&#  
} =mSu^q(l  
MY^o0N  
} ;0`IFtz  
S|fb'  
改进后的归并排序: y8Rq2jI;(e  
csA-<}S5]b  
package org.rut.util.algorithm.support; @1i<=r  
AY;[v.Ff4  
import org.rut.util.algorithm.SortUtil; R:rols"QM  
/.~zk(-&h  
/** \Yn0|j>  
* @author treeroot 5~d=,;yE  
* @since 2006-2-2 Xpt9$=d  
* @version 1.0 Xc4zUEO9  
*/ }Syd*%BR[  
public class ImprovedMergeSort implements SortUtil.Sort { IZGRQmi"  
//RD$e?h~  
private static final int THRESHOLD = 10; zN=s]b=/  
yMC6 Gvp  
/* de;CEm<n  
* (non-Javadoc) Vt,P.CfdC  
* !N!AO(Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Cat$)I#,  
*/ qj4jM7  
public void sort(int[] data) { w"W;PdH)  
int[] temp=new int[data.length]; P#V}l'j(<a  
mergeSort(data,temp,0,data.length-1); lPrAx0m13%  
} >x6)AH.  
@>8 {J6%\  
private void mergeSort(int[] data, int[] temp, int l, int r) { ou{V/?rb  
int i, j, k; :, 3S5!(y  
int mid = (l + r) / 2; :^-\KE` 3  
if (l == r) 7u rD  
return; dn:\V?9  
if ((mid - l) >= THRESHOLD) K=r~+4F  
mergeSort(data, temp, l, mid); 9m\Yi  
else uKj(=Rqq  
insertSort(data, l, mid - l + 1); KzJJ@D*4M]  
if ((r - mid) > THRESHOLD) Q- w_ @~  
mergeSort(data, temp, mid + 1, r); /`0>U  
else Z>l<.T"t'  
insertSort(data, mid + 1, r - mid); FGhnK'  
A~^x*#q{4  
for (i = l; i <= mid; i++) { NNwGRoDco  
temp = data; eNO[ikm  
} _'<FBlIN  
for (j = 1; j <= r - mid; j++) { LOr(HgyC  
temp[r - j + 1] = data[j + mid]; }8s&~f H  
} '=eVem=  
int a = temp[l]; gVy`||z  
int b = temp[r]; 4#:C t* f  
for (i = l, j = r, k = l; k <= r; k++) { SBdd_Fn  
if (a < b) { ; ), ,Hk  
data[k] = temp[i++]; Wyow MFp  
a = temp; 7#Uzz"^  
} else { Mvp|S.  
data[k] = temp[j--]; jc\y{I\  
b = temp[j]; /5Vv5d/Z4!  
} Z@%A(nZ_  
} 1=C<aRZ b^  
} {wgq>cb  
JT~Dr KI_  
/** jQ7-M4qO/  
* @param data  Mz+vT0  
* @param l )vpYVr-  
* @param i wQ~]VV RN  
*/ ggm'9|  
private void insertSort(int[] data, int start, int len) { lL 50PU  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); lR9uD9Dr  
} bUds E 1f  
} ] W$V#  
} * dk(<g=fM  
} JIHIKH-#  
Bk^o$3#  
堆排序: F S$8F  
mlUj%:Gm#  
package org.rut.util.algorithm.support; G \Nnw==v  
d @ l  
import org.rut.util.algorithm.SortUtil; p L^3*B.Nr  
`M. I.Z_  
/** k*!iUz{]  
* @author treeroot +@H{H2J4  
* @since 2006-2-2 M{jq6c  
* @version 1.0 `%EcQ}Nr  
*/ 8R-;cBT  
public class HeapSort implements SortUtil.Sort{ 5uOz#hN  
mdo$d-d&  
/* (non-Javadoc) 4sW~7:vU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cMoJHC,!  
*/ -t>"s'kv  
public void sort(int[] data) { ]0[ot$Da6  
MaxHeap h=new MaxHeap(); Plhakngj  
h.init(data); 6j+X@|2^  
for(int i=0;i h.remove(); +_u~Np  
System.arraycopy(h.queue,1,data,0,data.length); K5t.OAA:  
} F?0Q AA  
ao[yHcAs  
private static class MaxHeap{ g}uSIv^  
>"|t*k S  
void init(int[] data){ tmM; Z(9t  
this.queue=new int[data.length+1]; Y>ATL  
for(int i=0;i queue[++size]=data; 3-)}.8F  
fixUp(size); uPxjW"M+  
} g5u4|+70  
} m6]6 !_  
 pn) {v  
private int size=0; mEkYT  
K{V.N</  
private int[] queue; !^v~hD$_q  
z|Yt|W  
public int get() { Df:/r%  
return queue[1]; i1A<0W|  
} v-^tj}jA  
|.&GmP  
public void remove() { rKd|s7l  
SortUtil.swap(queue,1,size--); zjSl;ru  
fixDown(1); 7zJ2n/`m*  
} IN;9p w  
file://fixdown `&xdSH  
private void fixDown(int k) { Uj3HAu  
int j; !c-MC|  
while ((j = k << 1) <= size) { j]]5&u/l  
if (j < size %26amp;%26amp; queue[j] j++; %+;l|Z{Uf  
if (queue[k]>queue[j]) file://不用交换 `D$^SHfyz  
break; kBk2mMZ  
SortUtil.swap(queue,j,k); &0"*.:J9  
k = j; "a33m:]J  
} ?4Fev_5m  
} &-JIXVd*R  
private void fixUp(int k) { G"kX#k0S  
while (k > 1) { 1uR@ZK  
int j = k >> 1; 6d2e WS  
if (queue[j]>queue[k]) _`0DO4IU  
break; +>Gw)|oX  
SortUtil.swap(queue,j,k); SW+;%+`  
k = j; 8Q{9AoQ3'  
} DIWyv-  
} \u(Gj]B#"  
:(tKc3z  
} ~ b66 ;  
(n jTS+?  
} 4;gw&sFF  
ggYi7Wzsd  
SortUtil: F M YcZ+4  
rd$T6!I  
package org.rut.util.algorithm; GC3d7  
Fm6]mz%~u#  
import org.rut.util.algorithm.support.BubbleSort; GK6CnSV8d  
import org.rut.util.algorithm.support.HeapSort; UX.rzYM&T  
import org.rut.util.algorithm.support.ImprovedMergeSort; Kxeq Q@  
import org.rut.util.algorithm.support.ImprovedQuickSort; $ndBT+ i  
import org.rut.util.algorithm.support.InsertSort; ]Y76~!N  
import org.rut.util.algorithm.support.MergeSort; z7)$m0',?  
import org.rut.util.algorithm.support.QuickSort; gm8Jx hL  
import org.rut.util.algorithm.support.SelectionSort; (nuTfmt>  
import org.rut.util.algorithm.support.ShellSort; SMRCG"3qwA  
@T>^ >  
/** @,6*yyO  
* @author treeroot "{H{-`Ni  
* @since 2006-2-2 4gdXO  
* @version 1.0 W[]|Uu/%  
*/ [fb9;,x`  
public class SortUtil { O#C0~U]dDW  
public final static int INSERT = 1; m39.j:BG5  
public final static int BUBBLE = 2; 2Dvq3VbiO"  
public final static int SELECTION = 3; O&~ @ior  
public final static int SHELL = 4; nmE H/a  
public final static int QUICK = 5; QQS "K g  
public final static int IMPROVED_QUICK = 6; yv>uzb`N  
public final static int MERGE = 7; i.?rom  
public final static int IMPROVED_MERGE = 8; _4#7 ?p  
public final static int HEAP = 9; d7zZ~n  
  uk,9N  
public static void sort(int[] data) { C#1'kQO  
sort(data, IMPROVED_QUICK); F{.g05^y  
} 6cbV[ !BL  
private static String[] name={ xy$aFPH!-  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ;p fN  
}; tI#65ox#  
+>[zn  
private static Sort[] impl=new Sort[]{ o54=^@>O<j  
new InsertSort(), xcQ^y}JN  
new BubbleSort(), D(dV{^} 9  
new SelectionSort(), oY,{9H37b  
new ShellSort(), >qO l1]uF  
new QuickSort(), f><V;D#  
new ImprovedQuickSort(), v@s"*E/PF7  
new MergeSort(), Z.unCf3Q  
new ImprovedMergeSort(), Jcs /i  
new HeapSort() .Zs.O/  
}; %]tW2s"  
k*F9&-rtN  
public static String toString(int algorithm){ iS"6)#a72  
return name[algorithm-1]; I|c?*~7*  
} 0QrRG$<4X  
mRGr+m  
public static void sort(int[] data, int algorithm) { SNSoV3|k-  
impl[algorithm-1].sort(data); *p0n^XZ% ?  
} <veypLi"R  
HTMo.hr  
public static interface Sort { \Ov~ t  
public void sort(int[] data); c5O8,sT  
} kXUJlLod  
F* Yx1vj  
public static void swap(int[] data, int i, int j) { s+G( N$0U  
int temp = data; dpt P(H  
data = data[j]; j/E(*Hv  
data[j] = temp; J\'f5)k  
} bS55/M w  
} ^U,C])n  
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