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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。 F.D1;,x  
插入排序: 1 7oxD  
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package org.rut.util.algorithm.support; ,v_r$kh^  
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import org.rut.util.algorithm.SortUtil; )6^xIh  
/** RfG$Px '  
* @author treeroot +hgCk87%#  
* @since 2006-2-2 ,r;d{  
* @version 1.0 ]H~,K]@.  
*/ I;H9<o5  
public class InsertSort implements SortUtil.Sort{ :j<JZs>`R  
-<]_:Kf{;&  
/* (non-Javadoc) 0\@|M@X=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C/Bx_j((  
*/ ? M_SNv  
public void sort(int[] data) { 79g>7<vp  
int temp; 0f/!|c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); , % jTXb  
} oH0F9*+W  
} L"%eQHEC&  
} z 5+]Z a~  
LW5ggU/  
} $]JIA|  
Eo&qc 17)`  
冒泡排序: F5P{+z7  
\|` Pul$  
package org.rut.util.algorithm.support; `+c9m^  
O/oYaAlFF@  
import org.rut.util.algorithm.SortUtil; Z8 %\v(L  
!13 /+ u  
/** u#k ,G`  
* @author treeroot AiK4t-  
* @since 2006-2-2 BrMp_M  
* @version 1.0 #-j! ;?  
*/ B-'BJ|*4I  
public class BubbleSort implements SortUtil.Sort{ 8k?L{hF|nW  
n@[</E(  
/* (non-Javadoc) .BDRD~kB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T JS1,3<  
*/ kTc5KHJ7  
public void sort(int[] data) { +\vY;!^  
int temp; BV?N_/DXp  
for(int i=0;i for(int j=data.length-1;j>i;j--){ U] -@yx  
if(data[j] SortUtil.swap(data,j,j-1); f ?zK "  
} W;]U P$5l  
} ./y[<e  
} ]V^.!=gh$  
} 6v O)s!b  
f?^Oy!1]  
} PFgjWp"Y  
N%|Vzc  
选择排序: fUKdC \WL  
` +BaDns  
package org.rut.util.algorithm.support; bK$D lBZ  
^^3va)1{!  
import org.rut.util.algorithm.SortUtil; ur,"K' w  
8kM0  
/** )X!DCL:16  
* @author treeroot exEld  
* @since 2006-2-2 \If!5N  
* @version 1.0 XAxI?y[c  
*/ ^npS==Y]!.  
public class SelectionSort implements SortUtil.Sort { $0 S#d@v}  
$F`<&o  
/* 3et2\wOX1x  
* (non-Javadoc) ?$@ KwA  
* 1L=Qg4 H  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o7a6 )2JK  
*/ `NWgETf^#  
public void sort(int[] data) { hB$Y4~T%  
int temp; Nw>T $RzS  
for (int i = 0; i < data.length; i++) { c]!D`FA*K  
int lowIndex = i; cvXI]+`<3\  
for (int j = data.length - 1; j > i; j--) { LVFsd6:h  
if (data[j] < data[lowIndex]) { &J/4J  
lowIndex = j; t6g)3F7T  
} {F6dSF`  
} nL(%&z \4  
SortUtil.swap(data,i,lowIndex); A;WwS?fyQ  
} s3_e7D ^H  
}  e(;`9T  
['4\O43yv  
} n:^"[Le  
JfP\7  
Shell排序: _`X#c-J  
bu"68A;>  
package org.rut.util.algorithm.support; q4.dLU,1  
hr!f: D  
import org.rut.util.algorithm.SortUtil; Y9@dZw%2  
_]D#)-uv}C  
/** ldCKSWIi-  
* @author treeroot (&P0la 1  
* @since 2006-2-2 DYT -#Ht  
* @version 1.0 igj={==m  
*/ ueE?"Hk  
public class ShellSort implements SortUtil.Sort{ rT sbP40  
4`UL1)A]  
/* (non-Javadoc) lR@i`)'?U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H ?`)[#  
*/ +F7<5YW&(  
public void sort(int[] data) { 3?*M{Y|  
for(int i=data.length/2;i>2;i/=2){ l\=-+'Y  
for(int j=0;j insertSort(data,j,i); NHFEr  
} Bd[L6J)  
} CmJ?_>  
insertSort(data,0,1); pg?i F1  
} 7Js>!KR  
x'M^4{4[  
/** I>kiah*  
* @param data hM36QOdm  
* @param j =##s;zj(%  
* @param i i (%tHa37  
*/ mP)3cc5T  
private void insertSort(int[] data, int start, int inc) { {KU.  
int temp; znQ'm^h  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); `j}_BW_  
} _Vo)<--+I  
} 1(%>`=R8  
} @Ge>i5q  
oxMUW<gYd  
} (! 0j4'  
kh<pLI>$h  
快速排序: yWv<A^C &  
CCW%G,$U9  
package org.rut.util.algorithm.support; )@<HCRQ'q  
b@2Cl l#  
import org.rut.util.algorithm.SortUtil; &PRx,G5  
&$b\=  
/** t":W.q<  
* @author treeroot l- 1]w$ y  
* @since 2006-2-2 r)6uX  
* @version 1.0 M q^|M~  
*/ p |\%:#  
public class QuickSort implements SortUtil.Sort{ j!lAxlOX  
GP[6nw_'^  
/* (non-Javadoc) <DeKs?v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ue{vg$5||  
*/ 2/yXY_L  
public void sort(int[] data) { e$Xq    
quickSort(data,0,data.length-1); C5PmLiOHY>  
} " K 8&{=  
private void quickSort(int[] data,int i,int j){ ySwYV  
int pivotIndex=(i+j)/2; Cdp]Nv6  
file://swap zd*3R+>U'>  
SortUtil.swap(data,pivotIndex,j); $N}/1R^?r  
tjZ\h=  
int k=partition(data,i-1,j,data[j]); i<4>\nc  
SortUtil.swap(data,k,j); 9^ >M>f"  
if((k-i)>1) quickSort(data,i,k-1); :M22P`:  
if((j-k)>1) quickSort(data,k+1,j); fJ)N:q`  
o~v_PD[S  
} :W.jNV{e\F  
/** ]a$Wxvgq  
* @param data Dd!Sr8L[  
* @param i ex` xkZ+  
* @param j f {y]  
* @return /OQK/ t63  
*/ JcTp(fnW.~  
private int partition(int[] data, int l, int r,int pivot) { u\{qH!?t  
do{ $nB-ADRu@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); !;o\5x<'$O  
SortUtil.swap(data,l,r); 24T@N~\g  
} $?FS00p*|X  
while(l SortUtil.swap(data,l,r); 7$!`p,@we/  
return l; 87QZun%  
} ="uKWt6n'  
V I6\   
} eecw]P_?  
CY*ngi&  
改进后的快速排序: EKZ$Q4YE  
kCima/+_  
package org.rut.util.algorithm.support; 8G0  
DE*MdfP0  
import org.rut.util.algorithm.SortUtil; nE/=:{~Ws  
uy/y wm/?=  
/** .A3DFm3t  
* @author treeroot -"W)|oC_  
* @since 2006-2-2 :8p&#M  
* @version 1.0 h [nH<m  
*/ n?'d|h  
public class ImprovedQuickSort implements SortUtil.Sort { &EAk z  
<,jAk4  
private static int MAX_STACK_SIZE=4096; <Ctyht0c.  
private static int THRESHOLD=10; ,f} h}  
/* (non-Javadoc) 3g4e' ]t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `1nRcY  
*/ 9<xTu>7J  
public void sort(int[] data) { >f&xJq  
int[] stack=new int[MAX_STACK_SIZE]; a @6^8B?w;  
Zxg1M  
int top=-1; `kv1@aQPL  
int pivot; eY J{LPo  
int pivotIndex,l,r; m)s xotgXf  
<"* "1(wN  
stack[++top]=0; ZhH+D`9  
stack[++top]=data.length-1; hVMYB_<~  
 X ?tj$  
while(top>0){ o_iEkn  
int j=stack[top--]; +"'F Be  
int i=stack[top--]; ]]>nbgGn#  
tf4*R_6;1$  
pivotIndex=(i+j)/2; ecn}iN  
pivot=data[pivotIndex]; :/+>e IE  
B;VH`*+X  
SortUtil.swap(data,pivotIndex,j); >&bv\R/  
Rr%tbt.sE  
file://partition 82lr4  
l=i-1; \X&]FZ(*  
r=j; <5dH *K  
do{ x+4v s s  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \CcmePTN#x  
SortUtil.swap(data,l,r); (nGkZ}p  
} F[5S(7M 7  
while(l SortUtil.swap(data,l,r); )))2f skZ  
SortUtil.swap(data,l,j); #nKRTb+{  
}04Dg '  
if((l-i)>THRESHOLD){ -  $%jb2  
stack[++top]=i; hQXxG/yFm  
stack[++top]=l-1; P3G:th@j=  
} aSUsyOe  
if((j-l)>THRESHOLD){ l1&5uwuF  
stack[++top]=l+1; 4<u;a46Z#M  
stack[++top]=j; DlDB=N0@S  
} MFv Si  
VSh!4z1  
} bZiyapM  
file://new InsertSort().sort(data); QV0M/k<'  
insertSort(data); @|DmE!)  
} pjACFVMFX  
/** 1YFeVMc  
* @param data (#oYyM]  
*/ 2xDQ :=ec  
private void insertSort(int[] data) { d>&\V)E  
int temp; -TgUyv.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ^\MhT)x  
} B22b&0  
} T)8p:}P!  
} @: Z#E[N H  
{(;B5rs  
} L_^`k4ct  
cv= \g Z  
归并排序: EJ G2^DSS  
"=qv#mZ#9  
package org.rut.util.algorithm.support; z=qWJQ  
mmHJ h\2v  
import org.rut.util.algorithm.SortUtil; CJp-Y}fGEA  
ZPl PN;J^1  
/** Tw x{' S  
* @author treeroot >5.zk1&H  
* @since 2006-2-2 `$at9  
* @version 1.0 )S2iIi;Bq  
*/ mf}\s]_c  
public class MergeSort implements SortUtil.Sort{ >PIPp7C  
I]jX7.fx  
/* (non-Javadoc) "J& (:(:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) k52QaMKa~A  
*/ &3I$8v|!?  
public void sort(int[] data) { c}%es=@  
int[] temp=new int[data.length]; UeA2c_ 5  
mergeSort(data,temp,0,data.length-1); zj{(p Z1  
} gGI8t@t:  
>60"p~t  
private void mergeSort(int[] data,int[] temp,int l,int r){ ;}D-:J-z_  
int mid=(l+r)/2; .U 39nd  
if(l==r) return ; U+} y %3l  
mergeSort(data,temp,l,mid); as(*B-_n~  
mergeSort(data,temp,mid+1,r); >b>gr OX  
for(int i=l;i<=r;i++){ UT4f (Xo  
temp=data; G,]z (%  
} bE d?^h  
int i1=l; zks#EzQ  
int i2=mid+1; J?IC~5*2  
for(int cur=l;cur<=r;cur++){ N!L'W\H,  
if(i1==mid+1) Pu..NPl+  
data[cur]=temp[i2++]; ds]?;l"  
else if(i2>r) |<rfvsQ.  
data[cur]=temp[i1++]; `E W!-v)  
else if(temp[i1] data[cur]=temp[i1++]; yX'IZk#_L  
else E5gl^Q?Z  
data[cur]=temp[i2++]; D-pX<0 -y  
} Ukc'?p,*  
} 4 [1k\  
gLD{1-v  
} f*<ps o  
!!WJn}  
改进后的归并排序: K6hfauWd[  
hO6RQ0Iv@  
package org.rut.util.algorithm.support; -2 x E#r  
&DLhb90  
import org.rut.util.algorithm.SortUtil; ~ M*gsW$  
1"O&40l  
/** b@ 6:1x  
* @author treeroot ufP Cx|x~  
* @since 2006-2-2 H* /&A9("  
* @version 1.0 ({e7U17[#  
*/  2:'lZQ  
public class ImprovedMergeSort implements SortUtil.Sort { BC({ EE~R)  
)[jy[[K(  
private static final int THRESHOLD = 10; g/#~N~&  
+9zA^0   
/* ~KRnr0  
* (non-Javadoc) #ZlM?Q  
* X2^_~<I{,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t#5:\U5r.  
*/ y9!:^kDI  
public void sort(int[] data) { <tuS,.  
int[] temp=new int[data.length]; sJ~P:g  
mergeSort(data,temp,0,data.length-1); c&*l"  
} {y6C0A*  
H)5QqZ8  
private void mergeSort(int[] data, int[] temp, int l, int r) { A"4@L*QV  
int i, j, k; #ZWl=z5aBi  
int mid = (l + r) / 2; <KLg0L<W  
if (l == r) .S_QQM}Q  
return; U5<@<j(@  
if ((mid - l) >= THRESHOLD) o/1JO_41  
mergeSort(data, temp, l, mid); RZh}:  
else }9CrFTbx;  
insertSort(data, l, mid - l + 1); iyj3QLqE  
if ((r - mid) > THRESHOLD) r6t&E%b  
mergeSort(data, temp, mid + 1, r); nY0sb8lZJ  
else hVUIBJ/5(-  
insertSort(data, mid + 1, r - mid); WNF9#oN|oT  
$XGtS$  
for (i = l; i <= mid; i++) { iBoEZEHjw  
temp = data; <hv7s,i  
} lFf XWNb  
for (j = 1; j <= r - mid; j++) { .C= I^  
temp[r - j + 1] = data[j + mid]; e$|VG* d  
} o&$hYy"<.L  
int a = temp[l]; fHfY}BQS  
int b = temp[r]; 2~FPw{]j  
for (i = l, j = r, k = l; k <= r; k++) { |I^y0Q:K  
if (a < b) { !SF^a6jT  
data[k] = temp[i++]; {mSJUK?TKl  
a = temp; 8lwM{?k$  
} else { %F J#uQXZ  
data[k] = temp[j--]; fsvYU0L  
b = temp[j]; %v4ZGtKC@  
} M#a&\cqC  
} wmYvD<  
} 31}W6l88c  
9j#@p   
/** A[H;WKn0  
* @param data C9jbv/c  
* @param l x?L hq2  
* @param i *Jt8  
*/ <HQ&-jx  
private void insertSort(int[] data, int start, int len) { xl2g0?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); S$O,] @)  
} +(mL~td01  
} dJl^ADX[@  
} ({M?Q>s  
} % {Q-8w!  
!8$RBD %  
堆排序:  YqU/\f+  
JJ5C}`(  
package org.rut.util.algorithm.support; frqJN  
kCA5|u  
import org.rut.util.algorithm.SortUtil; cNj*E =~;  
io4aYB\  
/** &Rp"rMeW  
* @author treeroot -t4 [oB  
* @since 2006-2-2 e<5Y94YE  
* @version 1.0 <TxC!{<  
*/ lLCdmxbT  
public class HeapSort implements SortUtil.Sort{ #T\  
0M8.U  
/* (non-Javadoc) &+r 4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o:UXPAj  
*/ `^##b6jH  
public void sort(int[] data) { 3hS6j S  
MaxHeap h=new MaxHeap(); l h/&__  
h.init(data); M<[ ?g5=#  
for(int i=0;i h.remove(); CgnXr/!L  
System.arraycopy(h.queue,1,data,0,data.length); VXIQw' Cq  
} 8#59iQl  
d+}kg  
private static class MaxHeap{ (1){A8=?o  
3k' .(P|F  
void init(int[] data){ A1A3~9HuK  
this.queue=new int[data.length+1]; 5f{|"LG&  
for(int i=0;i queue[++size]=data; 8R xc&`_X  
fixUp(size); #J$qa Ul  
} Nn#u%xvJt  
} 9#rt:&xo0  
Z@J.1SaB  
private int size=0; =Od>;|]m  
Q6^x8  
private int[] queue; ;&?pd"^<_Z  
)^ <3\e  
public int get() { ?63&g{vA  
return queue[1]; \##`pa(8  
} +v15[^F  
i&Kz*,pt  
public void remove() { $(q8y/,R*-  
SortUtil.swap(queue,1,size--); G;]:$J  
fixDown(1); _N'75  
} )|]Z>>%t  
file://fixdown @2' %o<lF  
private void fixDown(int k) { (ZPXdr  
int j; 7ZFJexN]  
while ((j = k << 1) <= size) { o4)hxs  
if (j < size %26amp;%26amp; queue[j] j++; TnE+[.Qu  
if (queue[k]>queue[j]) file://不用交换 /F~X,lm*~  
break; +R[4\ hC0Y  
SortUtil.swap(queue,j,k); J_xG}d  
k = j; #@Y/{[s|@  
} ;NsO  
} T9)wj][ .  
private void fixUp(int k) { 9?`RR/w  
while (k > 1) { 1^{`lK~2  
int j = k >> 1; OVswt  
if (queue[j]>queue[k]) dZ2`{@AYY  
break; 9 P"iuU  
SortUtil.swap(queue,j,k); 2)\vj5<~$  
k = j; t(?<#KUB-  
} 7+ XM3  
} Lko`F$5X  
p|VcMxT9-  
} )5yj/0oT  
4}yE+dRUK:  
} LprM;Q_  
=! m JG  
SortUtil: P5URvEnz:  
 Q_4Zb  
package org.rut.util.algorithm; +d39f-[  
PXEKV0y  
import org.rut.util.algorithm.support.BubbleSort; I/s.xk_i  
import org.rut.util.algorithm.support.HeapSort; J22r v(  
import org.rut.util.algorithm.support.ImprovedMergeSort; '29WscU  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;$!I&<)  
import org.rut.util.algorithm.support.InsertSort; aWaw&u  
import org.rut.util.algorithm.support.MergeSort; Rd! 2\|  
import org.rut.util.algorithm.support.QuickSort; b5 Q NEi  
import org.rut.util.algorithm.support.SelectionSort; :ba/W&-d  
import org.rut.util.algorithm.support.ShellSort; W_<4WG  
F6dr  
/** 0.DQO;  
* @author treeroot K]"Kf{bx  
* @since 2006-2-2 1K[(ou'rl  
* @version 1.0 25em[Q:  
*/ 4lz{G*u  
public class SortUtil { J{ ~Rxa  
public final static int INSERT = 1; 9S1#Lr`r  
public final static int BUBBLE = 2; zj20;5o>U&  
public final static int SELECTION = 3; xo~g78jm7,  
public final static int SHELL = 4; +,_c/(P  
public final static int QUICK = 5; mk=#\>  
public final static int IMPROVED_QUICK = 6; S< x:t(  
public final static int MERGE = 7; 4/MNqit+  
public final static int IMPROVED_MERGE = 8; u~'OcO  
public final static int HEAP = 9; T]71lRY5  
)zJ=PF  
public static void sort(int[] data) { y8?t-Pp]1  
sort(data, IMPROVED_QUICK); M+aEma  
} ~B_ D@gV|  
private static String[] name={ _!:@w9  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Efr&12YSS  
}; >L[lV_M_>  
C1QWU5c v  
private static Sort[] impl=new Sort[]{ ZvH{wt   
new InsertSort(), OoaY  
new BubbleSort(), v~5<:0dL  
new SelectionSort(), `P.CNYR<J  
new ShellSort(), K^H>~`C=  
new QuickSort(), 295w.X(J  
new ImprovedQuickSort(), ;BI)n]L  
new MergeSort(), [hU=m S8=^  
new ImprovedMergeSort(), kp`0erJqw  
new HeapSort() 3*WS"bt  
}; F]5\YYXO  
O5;-Om  
public static String toString(int algorithm){ o!Fl]3F  
return name[algorithm-1]; 0w3b~RJ  
} 0&$xX!]  
Gvn: c/m;  
public static void sort(int[] data, int algorithm) { =|0/Ynfe  
impl[algorithm-1].sort(data); l0`'5>  
} dS$ji#+d$  
fn1pa@P  
public static interface Sort { O71BM@2<  
public void sort(int[] data); s.y}U5Ty?P  
} g1qi\axm  
8]C1K Zs  
public static void swap(int[] data, int i, int j) { 7) 0q--B  
int temp = data; 2U%qCfh6|  
data = data[j]; }n95< {  
data[j] = temp; [TCRB`nTQF  
} _,Q[2gQ5N  
} !$r9C/k  
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