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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。 Bafz&#;Q'  
插入排序: ;Kd{h  
f 7QUZb\  
package org.rut.util.algorithm.support; TG%hy"k  
VTgbJ {?  
import org.rut.util.algorithm.SortUtil; V3hm*{ON  
/** :\w[xqH  
* @author treeroot 7AFS)_w  
* @since 2006-2-2 R*TGn_J`  
* @version 1.0 uJ!s%s2g  
*/ G:6$P%.  
public class InsertSort implements SortUtil.Sort{ K {1ZaEH  
Lw+1|  
/* (non-Javadoc) ^J}$y7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~m;MM)_V  
*/ nluyEK  
public void sort(int[] data) { 4\eX=~C>:  
int temp; BC0c c[x  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 6/WK((Fd  
} K1wN9D{t'  
} pGcx jm  
} re 1k]  
g:3'x/a1  
} A>1p]#  
]3 8<ly7  
冒泡排序: j7HlvoZV  
~RLx;  
package org.rut.util.algorithm.support; :,z3 :PL  
zt>_)&b  
import org.rut.util.algorithm.SortUtil; _*?"[TYfX  
P@S;>t{TD  
/** 8KELN(o$ 7  
* @author treeroot 8iH;GFNJ7'  
* @since 2006-2-2 L) nVpqm   
* @version 1.0 BnnUUaE  
*/ q?]@' ^:;  
public class BubbleSort implements SortUtil.Sort{ )D-.7m.v]  
_>)"+z^r  
/* (non-Javadoc) Sph"w08  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o_KcnVQ\  
*/ )s7Tv#[  
public void sort(int[] data) { "drh+oo.  
int temp; 0gb]Kjx  
for(int i=0;i for(int j=data.length-1;j>i;j--){ P)j9\ muc  
if(data[j] SortUtil.swap(data,j,j-1); zhm!sMlO  
} ~m09yc d<  
} V1b_z  
} O> ^~SO  
} D>#v 6XI  
iYQy#kO  
} ;gu>;_  
1*, ~1!>  
选择排序: {$TB#=G  
W yJfF=<  
package org.rut.util.algorithm.support; A =[f>8  
96E7hp !:  
import org.rut.util.algorithm.SortUtil; >@89k^#Vc  
8\V>6^3CD$  
/** e]B<\i\T  
* @author treeroot LY cSMuJ  
* @since 2006-2-2 64?$TT  
* @version 1.0 3 !w>"h0(  
*/ @`+$d=rO`  
public class SelectionSort implements SortUtil.Sort { gsq[ 9  
<[f2ZS6  
/* ~U*N'>'=)  
* (non-Javadoc) VGUDUM.8  
* 714nUA872  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3R[J,go  
*/ E9*?G4P{l  
public void sort(int[] data) { 1YD.jU^;HD  
int temp; b|@op>UZ  
for (int i = 0; i < data.length; i++) { w,#W&>+&  
int lowIndex = i; j#>![km Mu  
for (int j = data.length - 1; j > i; j--) { &EJ,k'7$  
if (data[j] < data[lowIndex]) { W9m[>-Ew  
lowIndex = j; .lj!~_  
} G]DN!7]@g  
} *>*/|  
SortUtil.swap(data,i,lowIndex); ?,e:c XhE2  
} Bv]wHPun  
} Y},GZ^zqy  
Y'H/ $M N  
} xdU pp~}+.  
U*U )l$!  
Shell排序: y\|\9Q%D  
HPCA$LD  
package org.rut.util.algorithm.support; Nl)jQ  
AS"|r  
import org.rut.util.algorithm.SortUtil; tYNt>9L|  
[>9"RzEl  
/** !4.^@^L|\  
* @author treeroot "8dnFrE  
* @since 2006-2-2 (s*Uz3 sq  
* @version 1.0 5)NfZN# &  
*/  y] r~v  
public class ShellSort implements SortUtil.Sort{ ZUI9[A?  
n ZZQxV,  
/* (non-Javadoc) Z4 zMa&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G.ARu-2's  
*/ 'wq:F?viF  
public void sort(int[] data) { ^52R`{  
for(int i=data.length/2;i>2;i/=2){ )g^Ewzy^X  
for(int j=0;j insertSort(data,j,i); g)6 k?Y  
} l hp:.  
} $ rnr;V  
insertSort(data,0,1); q8v!{Os+#  
} Guc^gq}  
cDyC&}:f  
/** J|8YB3K,  
* @param data N!&VBx^z  
* @param j zvC,([  
* @param i "A`'~]/hE  
*/ :%]R x&08  
private void insertSort(int[] data, int start, int inc) { uQ+$HzxX  
int temp; V)jhyCL  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); YVp0}m  
} :2gO) 'cD  
} (\Zo"x;(  
} cU[pneY  
?S:_J!vX{  
} Q</HFpE  
+%$V?y (  
快速排序: "jMnYEG  
x)mC^  
package org.rut.util.algorithm.support; 9Bw5 t@  
1/J*ki+?  
import org.rut.util.algorithm.SortUtil; <bppu>&  
r:Cid*~m  
/** \1_&?( pU  
* @author treeroot [M>_(u6  
* @since 2006-2-2 [+7X&B  
* @version 1.0 7)wq9];w  
*/ y~1php>2f1  
public class QuickSort implements SortUtil.Sort{ M<pgaB0  
?y@pR e$2  
/* (non-Javadoc) '2{o_<m  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nE%qm -  
*/ 8?pZZtad  
public void sort(int[] data) { hKeh9 Bt  
quickSort(data,0,data.length-1); iiB$<b.((I  
} rWmi 'niu  
private void quickSort(int[] data,int i,int j){ M_I\:Q  
int pivotIndex=(i+j)/2; M)Q+_c2*  
file://swap  Vp4]  
SortUtil.swap(data,pivotIndex,j); 9DKB+K.1  
>;?97'M  
int k=partition(data,i-1,j,data[j]); <2A'   
SortUtil.swap(data,k,j); 7^X_tQf  
if((k-i)>1) quickSort(data,i,k-1);  ?C\9lLX  
if((j-k)>1) quickSort(data,k+1,j); B6&Mtm1  
sg\ jC#  
} n K=V`  
/** 8#B;nyGD1I  
* @param data 2@rc&Tx  
* @param i ~h+3WuOv  
* @param j IDZn ,^  
* @return ;r}<o?'RM  
*/ xc3Q7u!|  
private int partition(int[] data, int l, int r,int pivot) { X[6 z  
do{ aa]v7d  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); JpiKZG@L  
SortUtil.swap(data,l,r); U++UG5c  
} 8 EH3zm4  
while(l SortUtil.swap(data,l,r); bc-}Qn  
return l; z8MYgn 7  
} _?<Fc8F  
zf#&3K'k  
} r6G)R+#  
~=*_I4,+r  
改进后的快速排序: Mq$=zsj  
vj0?b/5m  
package org.rut.util.algorithm.support; >?<d}9X  
Xw5" JE!.  
import org.rut.util.algorithm.SortUtil; z"`?<A&u  
yRDLg c  
/** VvKH]>*  
* @author treeroot `#U6`[[  
* @since 2006-2-2 +__Rk1CVh  
* @version 1.0 S0yT%V  
*/ uM#/  
public class ImprovedQuickSort implements SortUtil.Sort { T94$}- 5/)  
 1qF.0  
private static int MAX_STACK_SIZE=4096; XwMC/]lK<  
private static int THRESHOLD=10; d?.x./1[qi  
/* (non-Javadoc) R\?!r4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _Qas+8NW  
*/ 24fWj?A|^  
public void sort(int[] data) { { q<l]jn9  
int[] stack=new int[MAX_STACK_SIZE]; v>R.ou(  
=c'LG   
int top=-1; A:Z:&(NtE:  
int pivot; K.~U%v}  
int pivotIndex,l,r; 5N/;'ySAE_  
) |a5Qxz  
stack[++top]=0; Vy $\.2=  
stack[++top]=data.length-1; u:$x,Q  
`R^VK-=C  
while(top>0){ uv!/DX#  
int j=stack[top--]; 0:EiCKb)ol  
int i=stack[top--]; K9=_}lS@'  
M#m7g4*L!  
pivotIndex=(i+j)/2; #S)*MT4ke  
pivot=data[pivotIndex]; 7 &Aakl  
gK'MUZ()  
SortUtil.swap(data,pivotIndex,j); rOGJ%|%(  
3}Pa,u N  
file://partition Xs/hqIXB  
l=i-1; OoNAW<  
r=j; Lif mYn[  
do{ \8!HZei  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xAflcY>Ozs  
SortUtil.swap(data,l,r); 'I2)-=ZL6  
} IcZ'KV  
while(l SortUtil.swap(data,l,r); \N)FUYoHg  
SortUtil.swap(data,l,j); =k z;CS+  
[#tW$^UD  
if((l-i)>THRESHOLD){ /e\dsC{uJ  
stack[++top]=i; y:L|]p}huE  
stack[++top]=l-1; "yumc5kt  
} 57r)&8  
if((j-l)>THRESHOLD){ .IgQn|N  
stack[++top]=l+1; jQhf)B  
stack[++top]=j; 03PVbDq-  
} =Ao;[j)*!  
I~I%z'"RQd  
} qCMcN<:>  
file://new InsertSort().sort(data); dGg+[?  
insertSort(data); s0u$DM2  
} gqhW.e}]  
/** =|V3cM4'  
* @param data '"EOLr\Z,  
*/ *HRRv.iQ  
private void insertSort(int[] data) { lMP7o&  
int temp; F-6* BUqJ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @N$r'@  
} $W2AiE[Wm  
} k)J7) L  
} k1<Py$9"  
fiZ8s=J  
} >cp9{+#f  
-'2.^a-8-g  
归并排序: ?cJ$=  
jL# akV  
package org.rut.util.algorithm.support; fITml6mbE  
Vswi /(  
import org.rut.util.algorithm.SortUtil; _ :z~P<%s  
7]Egu D4  
/** xl3U  
* @author treeroot :1iw_GhJf  
* @since 2006-2-2 ]k Pco4  
* @version 1.0 I.>LG  
*/ sM-*[Q=_  
public class MergeSort implements SortUtil.Sort{ i0P+,U  
-} (W=r\  
/* (non-Javadoc) 1;h>^NOq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s-*XAn ot  
*/ 5FMKJ7sC9  
public void sort(int[] data) { d09GD[5  
int[] temp=new int[data.length]; 5IepVS(>?v  
mergeSort(data,temp,0,data.length-1); -'nx7wnj2  
} #O~Y[''C5X  
p#&6Ed*V  
private void mergeSort(int[] data,int[] temp,int l,int r){ H\^^p!^)  
int mid=(l+r)/2; ?:ZH%R_`a  
if(l==r) return ; `'93J wYb  
mergeSort(data,temp,l,mid); XEuv aM  
mergeSort(data,temp,mid+1,r); )sQbDA|p  
for(int i=l;i<=r;i++){ I9MI}0}7  
temp=data; I}:/v$btM  
} H\S,^)drJ?  
int i1=l; S.I<Hs  
int i2=mid+1; pxN'E;P-  
for(int cur=l;cur<=r;cur++){ 4 qnQF]4  
if(i1==mid+1) F,D &  
data[cur]=temp[i2++]; 4ldN0 _T5  
else if(i2>r) 7+c@pEU]  
data[cur]=temp[i1++]; r}991O<  
else if(temp[i1] data[cur]=temp[i1++]; 41.+3VP  
else @ f$P*_G   
data[cur]=temp[i2++]; :+6m<?R)T  
} D,7! /u'  
} (T^aZuuS  
w8E,zH  
}  A=,m  
-{< %Wt9  
改进后的归并排序: D H/1 :H  
bUBuJ  
package org.rut.util.algorithm.support; C /E3NL8  
HqbTJ!a  
import org.rut.util.algorithm.SortUtil; ?]})Xf.A  
Y8d%L;b[D  
/** [;2v[&Po  
* @author treeroot Y}Ov`ZM!r  
* @since 2006-2-2 mMMu'N  
* @version 1.0 * T-XslI  
*/ rUyT5Vf  
public class ImprovedMergeSort implements SortUtil.Sort { bNC1[GG[  
l})uYae/  
private static final int THRESHOLD = 10; HiWZ?G  
+EFur dX\  
/* []Z6<rC|  
* (non-Javadoc) ]6nF>C-C  
* =?}'\ >G "  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w#o<qrpHf  
*/ H95VU"  
public void sort(int[] data) { B1GSZUd^?0  
int[] temp=new int[data.length]; {C3bCVQ]o  
mergeSort(data,temp,0,data.length-1); eBP N[V  
} L4dbrPE*0  
J/mLB7^R  
private void mergeSort(int[] data, int[] temp, int l, int r) { %~eZrG.  
int i, j, k; xv)7-jlx  
int mid = (l + r) / 2; 5Ph"*Rz%  
if (l == r) ='mqfGRi>  
return; 2^juLXc|R  
if ((mid - l) >= THRESHOLD) -?GYW81Q  
mergeSort(data, temp, l, mid);  l[ L{m7  
else 'r-a:8:t^  
insertSort(data, l, mid - l + 1); UgUW4x'+  
if ((r - mid) > THRESHOLD) yXkgGY5  
mergeSort(data, temp, mid + 1, r); m7eO T  
else yeW|Ux:  
insertSort(data, mid + 1, r - mid); yyXJ_B  
F:\y#U6"J  
for (i = l; i <= mid; i++) { *d%m.:)N  
temp = data; %Jw;c`JM  
} 10a=[\ Q  
for (j = 1; j <= r - mid; j++) { %7{6>6%  
temp[r - j + 1] = data[j + mid]; $u`;{8  
} kQj8;LU  
int a = temp[l]; d+/d)cu  
int b = temp[r]; *<9p88FpDU  
for (i = l, j = r, k = l; k <= r; k++) { ;z&p(e  
if (a < b) { =7$YBCuF  
data[k] = temp[i++]; al^ yCoB  
a = temp; SX;FBO(p  
} else { &"d4J?io`  
data[k] = temp[j--]; r<"1$K~Ka  
b = temp[j]; y<5s)OehG  
} 5:YtBdP  
} 8I@_X~R  
} ] qrO"X=  
d`2VbZC`  
/** V{(ve#y7`{  
* @param data V+E2nJ  
* @param l M T{^=F ]  
* @param i @O4m-Oosi  
*/ 4$.4,4+  
private void insertSort(int[] data, int start, int len) { q~a6ES_lA  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); z<)?8tAgq  
} =_TCtH  
} qG~O] ($  
} cA_v*`YL  
} FCOSgEU  
sfx:j~bsL  
堆排序: Ll&Y_Ry  
&L+u]&!6C  
package org.rut.util.algorithm.support; GT* \gZ  
B<+}_3.  
import org.rut.util.algorithm.SortUtil; IUI >/87u  
3dC8MKPq0  
/** 1!,lI?j,  
* @author treeroot HSyohP87  
* @since 2006-2-2 }>SHTHVye  
* @version 1.0 WtdWD_\%Y\  
*/ y%iN9 -t  
public class HeapSort implements SortUtil.Sort{ fU$zG"a_  
xpUaFb  
/* (non-Javadoc) tZ4W]od  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )PR{ia64;<  
*/ Z1*y$=D?3[  
public void sort(int[] data) { o D^],  
MaxHeap h=new MaxHeap(); ba|~B8rII[  
h.init(data); _G[5S-0 [  
for(int i=0;i h.remove(); 1P&c:n  
System.arraycopy(h.queue,1,data,0,data.length); R$NH [Tz  
} WCU[]A  
Wrt3p-N"D  
private static class MaxHeap{ HlLF<k~}  
NNSn]LP  
void init(int[] data){ o9>r -  
this.queue=new int[data.length+1]; F@&q4whaVD  
for(int i=0;i queue[++size]=data; OyFBM>6gh  
fixUp(size); ^- mz!{  
} T|r@:t[  
} S+_}=25  
vlx wt~  
private int size=0; O Y/QA  
ss |<\DE+  
private int[] queue; omY%sQ{)  
<(;"L<?D<C  
public int get() { s +^YGB  
return queue[1]; mJ[LmQ<:  
} 'V .4Nhd  
Spt[b.4mF  
public void remove() { 8qo{%  
SortUtil.swap(queue,1,size--); OP%h`  
fixDown(1); ;OE{&  
} NC|&7qQ  
file://fixdown |$^,e%bE  
private void fixDown(int k) { 1u 'x|Un  
int j; d{I|4h  
while ((j = k << 1) <= size) { ?}lgwKBHl;  
if (j < size %26amp;%26amp; queue[j] j++; @4_W}1W  
if (queue[k]>queue[j]) file://不用交换 @UE0.R<  
break; nSmYa7  
SortUtil.swap(queue,j,k); kR9G;IZ8s  
k = j; 2r<UYB  
} K4snp u hC  
} hPP+lqY[  
private void fixUp(int k) { AZxOq !B  
while (k > 1) { ,r+=>vre  
int j = k >> 1; kjJ\7x6M  
if (queue[j]>queue[k]) rN8 ZQiJC  
break; G{$9e}#  
SortUtil.swap(queue,j,k); t&eY+3y,T  
k = j; zH}u9IR3`  
} D3vdO2H  
} ,m9Nd "6\  
A: 0  
} L*Xn!d%  
e*:[#LJ]C  
} e#)}.   
]Y}faW(&Y  
SortUtil: +);o{wfW  
"-90:"W  
package org.rut.util.algorithm; }ZlJ  
YLJH?=2@  
import org.rut.util.algorithm.support.BubbleSort; n +`(R]Q  
import org.rut.util.algorithm.support.HeapSort; R1\cAP^ 0  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y:ZI9JK?  
import org.rut.util.algorithm.support.ImprovedQuickSort; X_ !Sm  
import org.rut.util.algorithm.support.InsertSort; ;xXHSxa:=W  
import org.rut.util.algorithm.support.MergeSort; b8feo'4Z   
import org.rut.util.algorithm.support.QuickSort; #AFr@n  
import org.rut.util.algorithm.support.SelectionSort; 0+m"eGwTm  
import org.rut.util.algorithm.support.ShellSort; `LVXK|m+$  
ZZ)bTLu  
/** #$e~ o}(r  
* @author treeroot *Iyv${  
* @since 2006-2-2 Oh5(8.<y  
* @version 1.0 'h([Y8p{  
*/ f @Hp,-  
public class SortUtil { ?,;|*A  
public final static int INSERT = 1; +g@@|&B  
public final static int BUBBLE = 2; !D7 [R'RgY  
public final static int SELECTION = 3; e(6g|h  
public final static int SHELL = 4; '[{M"S  
public final static int QUICK = 5; 9L*gxI>  
public final static int IMPROVED_QUICK = 6; ,iB)8Km@U  
public final static int MERGE = 7; [="moh2*f  
public final static int IMPROVED_MERGE = 8; GL.& g{$#+  
public final static int HEAP = 9; ^Qs-@]E-  
{uDL"~^\  
public static void sort(int[] data) { ak;fCx&  
sort(data, IMPROVED_QUICK); jgVra*   
} X CDHd ?Ld  
private static String[] name={ plv"/KJM  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `[C8iF*Y"  
}; AFc#2wn  
s[SzE6eQ`l  
private static Sort[] impl=new Sort[]{ U^snb6\5  
new InsertSort(), (uD(,3/Cw  
new BubbleSort(), , .x5  
new SelectionSort(), @$F(({?  
new ShellSort(), acRPKTs H  
new QuickSort(), jgs kK  
new ImprovedQuickSort(), 6jO*rseC  
new MergeSort(), d&n0:xOc  
new ImprovedMergeSort(), +[zrU`!@  
new HeapSort()  #Z"N\49  
}; @R9  
0v,DQJ?w8  
public static String toString(int algorithm){ 44 o5I:  
return name[algorithm-1]; ;_F iiBk7(  
} t'Nu^_#  
|0b$60m$!t  
public static void sort(int[] data, int algorithm) { GQ$0`?lp  
impl[algorithm-1].sort(data); aGr(djD  
} }^pnwo9vV  
_( 0!bUs>  
public static interface Sort { |U8;25Y  
public void sort(int[] data); w-HgC  
} {MO`0n; rt  
[f:>tRdH  
public static void swap(int[] data, int i, int j) { qF%wl  
int temp = data; &bRmr/D  
data = data[j]; QtW5; A-h  
data[j] = temp; /ZvNgaH5M  
} hOO)0IrIM*  
} Z5bmqhDo[  
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