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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。 26xXl|I  
插入排序: ^5=B`aich  
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package org.rut.util.algorithm.support; Y5F]:gs@  
W"Gkq!3u{  
import org.rut.util.algorithm.SortUtil; b, :QT~g=  
/** @-+Q# Zz`  
* @author treeroot n5{Xj:}  
* @since 2006-2-2 Y+Fljr*  
* @version 1.0 }fKSqB]T-  
*/ D}v mwg@3  
public class InsertSort implements SortUtil.Sort{ W^G>cC8.L  
>Jp:O 7  
/* (non-Javadoc) %Q.&ZhB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +Z85HY{  
*/ 3;a<_cE*@  
public void sort(int[] data) { zL\OB?)5J  
int temp; h(5P(`M  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); B9wPU1  
} Uf,4  
} x:QgjK  
} VZ\B<i  
Qci4J  
} v$N|"o""  
9ksE>[7  
冒泡排序: D&S26jrZ  
%DdJ ^qHI  
package org.rut.util.algorithm.support; Ybn`3  
/RMPS. d {  
import org.rut.util.algorithm.SortUtil; IV)<5'v  
U{VCZ*0cj  
/** wR^R M(1  
* @author treeroot xe*aC  
* @since 2006-2-2 C?2' +K  
* @version 1.0 C[%OkPR,H  
*/ CjiVnWSz<  
public class BubbleSort implements SortUtil.Sort{ k70|'*Kh  
[3@):8  
/* (non-Javadoc) VP6ZiQ|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yc'kvj)_M  
*/ 0D&t!$Ibf  
public void sort(int[] data) { Z"AQp _  
int temp; rf$X>M=G  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %wSj%>&-R  
if(data[j] SortUtil.swap(data,j,j-1); BN4_:  
} nG;8:f`  
} GxKqD;;u?=  
} di>cMS 4 c  
} 6C+"`(u%V  
f4PIoZ e  
} UNkCL4N  
x(eb5YS  
选择排序: ~>+]%FPv  
n;:rf7hGY  
package org.rut.util.algorithm.support; dtc IC0:[  
x*Y@Q?`>5W  
import org.rut.util.algorithm.SortUtil; ,Bal  
6CMub0   
/** $n^gmhp  
* @author treeroot I:d[Q s  
* @since 2006-2-2 6A=8+R'`F  
* @version 1.0 6KOlY>m]  
*/ Z"uY}P3  
public class SelectionSort implements SortUtil.Sort { (1NA  
$VxA0 =ad  
/* .({smN,B  
* (non-Javadoc) q| LDo~H  
* Co3:*nbRv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) U\sHx68  
*/ 4~N[%>zJ  
public void sort(int[] data) { }ga@/>Sl&  
int temp; S*,rGCt'T  
for (int i = 0; i < data.length; i++) { rrCNo^W1  
int lowIndex = i; wW/7F;54  
for (int j = data.length - 1; j > i; j--) { P:N1#|g  
if (data[j] < data[lowIndex]) { 0s>/mh;  
lowIndex = j; | a# f\  
} ;Yg{zhJX~  
} -^ C=]Medl  
SortUtil.swap(data,i,lowIndex); [V) L  
} <bD>m[8,  
} _Y[jyD1>  
56Vb+0J'  
} G2^et$<{uU  
4NdN< #Lr  
Shell排序: jr3ti>,xV  
wWp(yvz  
package org.rut.util.algorithm.support; =lVK IW  
+|ycvHd  
import org.rut.util.algorithm.SortUtil; _BDK`D  
+tD[9b! m  
/** wW%4d  
* @author treeroot  *tAg*$  
* @since 2006-2-2 gc?#pP  
* @version 1.0 3dDX8M?  
*/ kn/Ao}J74z  
public class ShellSort implements SortUtil.Sort{ YXI'gn2b#  
l3IWoa&sh  
/* (non-Javadoc) >(snII  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bl'z<S, '  
*/ <~)kwq'  
public void sort(int[] data) { jH6&q~#  
for(int i=data.length/2;i>2;i/=2){ J;prC  
for(int j=0;j insertSort(data,j,i); @ G4X  
} Q[d}J+l4{  
} !S_^94b@  
insertSort(data,0,1); Q8_ d)t|  
} cDI [PJ9  
c?%(Dp E  
/** 0pSmj2/,.  
* @param data =ID 2  
* @param j >X51$wBL  
* @param i %b^OeWip  
*/ MW+b;0U`#  
private void insertSort(int[] data, int start, int inc) { A3ZY~s#Iv  
int temp; YQS5P#  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); i>joT><B  
} z-c}NdW  
} T t>8?  
} +z$pg  
O%ug@& S{  
} W\L`5CW  
"ax..Mh\y  
快速排序: Tdc3_<1  
|> _!eS\=<  
package org.rut.util.algorithm.support; 36n>jS&  
`w.AQ?p@  
import org.rut.util.algorithm.SortUtil; W'on$mB5<  
G5FaYL.7  
/** 0j_bh,zG#  
* @author treeroot 8O"U 0  
* @since 2006-2-2 .E@|D6$D  
* @version 1.0 RO3oP1@B  
*/ -!8(bjlJ&  
public class QuickSort implements SortUtil.Sort{ _A~4NW{U7  
:(_+7N[KA  
/* (non-Javadoc) X@|&c]]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d O~O |Xsb  
*/ fkSwD(  
public void sort(int[] data) { ILic.@st  
quickSort(data,0,data.length-1); GAc{l=vT'  
} 0W%@gs5d&  
private void quickSort(int[] data,int i,int j){ > MH(0+B*  
int pivotIndex=(i+j)/2; E~kG2x{a  
file://swap _0 m\[t.  
SortUtil.swap(data,pivotIndex,j); W k}AmC  
Gx 72  
int k=partition(data,i-1,j,data[j]); WW@d:R  
SortUtil.swap(data,k,j); rP(eva  
if((k-i)>1) quickSort(data,i,k-1); !(t,FYeH  
if((j-k)>1) quickSort(data,k+1,j); )}L??|#  
BJS-Jy$-  
} ~j'l.gQb  
/** "p3_y`h6+  
* @param data 9TAj) {U%'  
* @param i SI6B#u-i  
* @param j [>|FB'  
* @return >\!4Mk8  
*/ Bu]t*$  
private int partition(int[] data, int l, int r,int pivot) { LA[g(i 7  
do{ jp+_@S>  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Pe2wsR"_U  
SortUtil.swap(data,l,r); dr<<!q /  
} i7LJ&g/)  
while(l SortUtil.swap(data,l,r); cUO<.  
return l; {ccIxL /~  
} 7_# 1Ec|;  
4c+$%pq5  
} ^W7X(LQ*+  
'>(.%@  
改进后的快速排序: j8K,jZ  
X o{`]  
package org.rut.util.algorithm.support; #*>E*#?t  
! <WBCclX  
import org.rut.util.algorithm.SortUtil; ,Os? f:Y6  
7zTqNnPnf  
/** n& $^04+i  
* @author treeroot F6hmku>\1  
* @since 2006-2-2 {5|("0[F  
* @version 1.0 |([R'Orm  
*/ /1`cRyS  
public class ImprovedQuickSort implements SortUtil.Sort { }!TL2er_  
Bg8#qv  
private static int MAX_STACK_SIZE=4096; z 5]bia,  
private static int THRESHOLD=10; *{o UWt  
/* (non-Javadoc) wLV~F[:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~l~Tk6EM  
*/ B[9 (FRX  
public void sort(int[] data) { PNeh#PI 6)  
int[] stack=new int[MAX_STACK_SIZE]; 0W^dhYO  
{k(eNr,  
int top=-1; A*tKF&U5  
int pivot; 2ij# H ;  
int pivotIndex,l,r; w-$[>R[hw  
8Q)@  
stack[++top]=0; 26n^Dy>}  
stack[++top]=data.length-1; (.3'=n|kE  
CCDDK L]N:  
while(top>0){ 4ujvD^  
int j=stack[top--]; t_ur&.^SB  
int i=stack[top--]; A`6ra}U<  
)$Z(|M4  
pivotIndex=(i+j)/2; P;]F=m+ *V  
pivot=data[pivotIndex]; [hRU&z;W  
:!zC"d9@  
SortUtil.swap(data,pivotIndex,j); Vc3mp;6"  
gX5&d\y  
file://partition z{]?h cY  
l=i-1; n +1y  
r=j; Qju`e Eo  
do{ V^il$'  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); i.1U|Pi  
SortUtil.swap(data,l,r); <f~Fl^^8  
} insY(.N  
while(l SortUtil.swap(data,l,r); [t0rfl{.  
SortUtil.swap(data,l,j); "'Z- UV  
=wq;@'U  
if((l-i)>THRESHOLD){ r(2 R <A  
stack[++top]=i; $A<ESfrs  
stack[++top]=l-1; AK u_~bTk  
} )fU(AXSP  
if((j-l)>THRESHOLD){ &GWkq>  
stack[++top]=l+1; 'b"TH^\  
stack[++top]=j; #Tp]^ n  
} Cpx+qQt0  
m|svQ-/j  
} R,@g7p  
file://new InsertSort().sort(data); ?HHzQ4w%{  
insertSort(data); 99 wc  
} sNU}n<J-  
/** mE#nU(+Ta  
* @param data s* j fMY  
*/ ]qw0V   
private void insertSort(int[] data) { bZipm(e  
int temp; ")lw9t`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); .+K S`  
} B>TSdn={>  
} D!TZI  
} l*7?Y7FK  
+'03>!V  
} J7i+c];!<  
g.Hio.fVd  
归并排序: :wgfW .w  
-g`IH-B  
package org.rut.util.algorithm.support; J^3H7 ]  
vH?9\3  
import org.rut.util.algorithm.SortUtil; CP` XUpX`&  
(xyS7q]m  
/** 8TZENRzx-|  
* @author treeroot Lu>H`B7Q"  
* @since 2006-2-2 =7ydk"xM*  
* @version 1.0 0-2"FdeQU  
*/ hRTMFgO  
public class MergeSort implements SortUtil.Sort{ yFpySvj }  
)fh0&Y; R  
/* (non-Javadoc) .]76!(fWZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cBEHH4U  
*/ !E& MBAKy  
public void sort(int[] data) { 3x5!a5$Y  
int[] temp=new int[data.length]; M$&>5n7  
mergeSort(data,temp,0,data.length-1); YL^Z4: p  
} _ 6:ww/  
[!?wyv3  
private void mergeSort(int[] data,int[] temp,int l,int r){ 68 x}w Ae  
int mid=(l+r)/2; D[>W{g $  
if(l==r) return ; T{ -2fp8r[  
mergeSort(data,temp,l,mid); YU\Gj S~>&  
mergeSort(data,temp,mid+1,r); zLek& s&-  
for(int i=l;i<=r;i++){ Fh`-(,e?5  
temp=data; \f"?Tv-C'  
} fI11dE9&?[  
int i1=l;  .fJ*c  
int i2=mid+1; *]{=8zc2  
for(int cur=l;cur<=r;cur++){ ]P*!'iYN(  
if(i1==mid+1) FDq{M?6i  
data[cur]=temp[i2++]; sx-F8:Qa  
else if(i2>r) ahp1!=Z-=  
data[cur]=temp[i1++]; F aWl,}]  
else if(temp[i1] data[cur]=temp[i1++]; T}2:.Hk:N  
else ^K*-G@B  
data[cur]=temp[i2++]; rv?!y8\  
} .&(8(C  
} 2v\W1VF  
(C~dkR?  
} b"P&+c  
5&qY3@I7l  
改进后的归并排序: X2P``YFV{  
;z0"Ox=7  
package org.rut.util.algorithm.support; bs:QG1*.  
(j=DD6fC  
import org.rut.util.algorithm.SortUtil; &(0N.=R  
X X&K=<,Ja  
/** IQoH@l&Xk  
* @author treeroot \^m.dIPdO  
* @since 2006-2-2 ?'f^X$aS  
* @version 1.0 Z^+a*^w~{  
*/ e/P4mc)  
public class ImprovedMergeSort implements SortUtil.Sort { FpC~1Nau  
i;avwP<0  
private static final int THRESHOLD = 10; ?w8p LE~E  
kc|>Q7~{  
/* wXcMt>3  
* (non-Javadoc) {DS\!0T-X  
* [>wzl"cHW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b_l.QKk  
*/ {a@hRY_  
public void sort(int[] data) { /evaTQPz  
int[] temp=new int[data.length]; X,&xhSzg?  
mergeSort(data,temp,0,data.length-1); VlV)$z_  
} s8yCC #H"  
Lv^a+'  
private void mergeSort(int[] data, int[] temp, int l, int r) { tNYJQ  
int i, j, k; -D;lS 6  
int mid = (l + r) / 2; 7Qt2gf  
if (l == r) RAdvIIQp:  
return; ^xmZ|f-  
if ((mid - l) >= THRESHOLD) CR.bMF}  
mergeSort(data, temp, l, mid); a2[ 8wv1  
else s7vPI   
insertSort(data, l, mid - l + 1); |o|gP8  
if ((r - mid) > THRESHOLD) 98jD"*W5  
mergeSort(data, temp, mid + 1, r); (UXv,_"nU  
else R&#[6 r(h  
insertSort(data, mid + 1, r - mid); DqRLx85d1  
exsQmbj* %  
for (i = l; i <= mid; i++) { 4@= aa  
temp = data; m&,bC)}  
} .Dc28F~t  
for (j = 1; j <= r - mid; j++) { t2Ip\>;9f  
temp[r - j + 1] = data[j + mid]; (K<Z=a  
} }FHw" {my  
int a = temp[l]; 9=H}yiJz  
int b = temp[r]; 5FZ47m ~{Z  
for (i = l, j = r, k = l; k <= r; k++) { B<(Pd  
if (a < b) { _w\Y{(k  
data[k] = temp[i++]; 4,gol?a  
a = temp; ,0BR-#  
} else { Lf[G>0t&n  
data[k] = temp[j--]; l t&$8jh  
b = temp[j]; OTnu{<.a  
} r[6#G2  
} U.HoFf+HN  
} .MzOLv   
\nrgAC-b  
/** $+A%ODv  
* @param data qPL^zM+  
* @param l (s5<  
* @param i bl$+8 !~  
*/ '.=Wk^,Ua  
private void insertSort(int[] data, int start, int len) { GU:r vS!  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Y;'VosTD  
} )>-77\  
} m(8jSGV  
} := ]sq}IN  
} R)sp  
V"w`!  
堆排序: (~q#\  
;% /6Y~/  
package org.rut.util.algorithm.support; c1pq]mz|z  
MZ;"J82p  
import org.rut.util.algorithm.SortUtil; Uuwq7oFub  
>{phyByI  
/** = 4BLc  
* @author treeroot 7p P|  
* @since 2006-2-2 w{_e"N  
* @version 1.0 ~AEqfIx*^&  
*/ [ c ~LY4:  
public class HeapSort implements SortUtil.Sort{ VQ1?Db(_2  
uAW*5 `[  
/* (non-Javadoc) n@G:e-m{A  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @4G.(zW  
*/ }9L 40)8  
public void sort(int[] data) { Paae-EmC  
MaxHeap h=new MaxHeap(); ;FV~q{  
h.init(data); -_y~rx >  
for(int i=0;i h.remove(); g28S3 '2  
System.arraycopy(h.queue,1,data,0,data.length); 9f@#SB_H  
} ki[;ZmQq Y  
""25ay  
private static class MaxHeap{ O vyB<r  
XA&tTpfJE  
void init(int[] data){ M!xm1-,[  
this.queue=new int[data.length+1]; n4ds;N3Hd  
for(int i=0;i queue[++size]=data; X";QA":  
fixUp(size); ^yn[QWFO  
} '0'"k2"vC  
} "@c';".|  
fl pXVtsQ  
private int size=0; qB+:#Yrx/  
q;1VF;<"vH  
private int[] queue; G/LXUhuif  
'U|MM;(  
public int get() { >K_$[qP3  
return queue[1]; NPB,q& Th  
} ZaukMEq  
R` I8Ud4=  
public void remove() { # `N6<nb  
SortUtil.swap(queue,1,size--); )rs|=M=Xk  
fixDown(1); Q7 0**qm  
} ,p[\fT($]  
file://fixdown Ov~S2?E8  
private void fixDown(int k) { 2;Y@3d:z  
int j; ;qT!fuN;  
while ((j = k << 1) <= size) { .J<qfQ  
if (j < size %26amp;%26amp; queue[j] j++; 1OiZNuI:E  
if (queue[k]>queue[j]) file://不用交换 )CwMR'LV  
break; .(MbP  
SortUtil.swap(queue,j,k); gJcXdv=]2  
k = j; ])$. "g  
} !SO$k%b}!  
} /QV. U.>G  
private void fixUp(int k) { V:0uy>  
while (k > 1) { = h<? /Krs  
int j = k >> 1; FkJ>]k  
if (queue[j]>queue[k]) ^?K?\   
break; 6'No4[F 4n  
SortUtil.swap(queue,j,k); }(g+:]p-  
k = j; Pw^c2TQ  
} [F AOp@7W  
} }]39 iK`w  
R>e3@DQ~  
} cmr6,3_  
p~d)2TC4#  
} y-)+I<M  
-u3SsU)_%N  
SortUtil: ~*cY&  9  
D|Ihe%w-  
package org.rut.util.algorithm; T^(n+lv  
iRj x];:Vu  
import org.rut.util.algorithm.support.BubbleSort; =-Q  
import org.rut.util.algorithm.support.HeapSort; TgQ|T57  
import org.rut.util.algorithm.support.ImprovedMergeSort; :AqnWy  
import org.rut.util.algorithm.support.ImprovedQuickSort; 8@LykJbP  
import org.rut.util.algorithm.support.InsertSort; *09\\ G  
import org.rut.util.algorithm.support.MergeSort; UTK.tg  
import org.rut.util.algorithm.support.QuickSort; tN'- qdm  
import org.rut.util.algorithm.support.SelectionSort; tEWj}rX   
import org.rut.util.algorithm.support.ShellSort; !irX[,e  
&;@b&p+  
/** $ Op/5j  
* @author treeroot wkZ2Y-#='  
* @since 2006-2-2 4G;`KqR@  
* @version 1.0 QhE("}1  
*/ TNyY60E  
public class SortUtil { 48&KdbGX  
public final static int INSERT = 1; MlC-Aad(  
public final static int BUBBLE = 2; l&^[cR  
public final static int SELECTION = 3; Uwm[q+sTp  
public final static int SHELL = 4; h'YcNkM 2>  
public final static int QUICK = 5; 73sAZa|  
public final static int IMPROVED_QUICK = 6; h&)vdCCk  
public final static int MERGE = 7; {R{%Z  
public final static int IMPROVED_MERGE = 8; GLKN<2|2@y  
public final static int HEAP = 9; ubCJZ"!  
$evuPm8G  
public static void sort(int[] data) { P2:Q+j:PX  
sort(data, IMPROVED_QUICK); n,Mw# r?y  
} Q-dHR i  
private static String[] name={ eUw;!Du  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" OB  i!fLa  
}; f+*2K^B  
08jUVHdt  
private static Sort[] impl=new Sort[]{ ?L#SnnE  
new InsertSort(), W4rw;(\  
new BubbleSort(), (_n8$3T75  
new SelectionSort(), JK8@J9(#  
new ShellSort(), K~ /V  
new QuickSort(), U#1yl6e\I  
new ImprovedQuickSort(), zUgkY`]:BJ  
new MergeSort(), z?_}+  
new ImprovedMergeSort(), e4W];7_K!  
new HeapSort() xo 'w+Av  
}; |b;M5w?  
m}'@S+k^  
public static String toString(int algorithm){ v*]Xur6e}  
return name[algorithm-1]; | v'5*n9  
} Gc!{%x  
BHE =Zo  
public static void sort(int[] data, int algorithm) { F5Q. Vh  
impl[algorithm-1].sort(data); yhn $4;m  
} ~u`! Gi  
.&Gtw _  
public static interface Sort { L8K3&[l%  
public void sort(int[] data); 0|Ft0y`+  
} ^A<.s_  
-Izg&u &  
public static void swap(int[] data, int i, int j) { d@4=XSj  
int temp = data; 4_:e+ ql  
data = data[j]; N)y;owgo  
data[j] = temp; r$eL-jQmn  
} k#+^=F^)I  
} 5h^qtK  
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