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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。 Oe/&Ryj=mm  
插入排序: hp$/O4fD  
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package org.rut.util.algorithm.support; U{JD\G 8m  
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import org.rut.util.algorithm.SortUtil; ~v$1@DQ}  
/** >]!8f?,  
* @author treeroot cUH. ^_a  
* @since 2006-2-2 ,'nd~{pX"(  
* @version 1.0 3b d(.he2u  
*/ jGSY$nt9  
public class InsertSort implements SortUtil.Sort{ ieL7jN,'m  
]VCVV!G_=n  
/* (non-Javadoc) 9Ev<t \B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ev'` K=n8  
*/ VK]cZ%)  
public void sort(int[] data) { 5{"v/nXV  
int temp; XY h)59oM%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); x* 9 Xu"?  
} J\@W+/#dF  
} !2o1c  
} [qL{w&R  
~O c:b>~  
} b4R;#rm  
3OlXi9>3  
冒泡排序: z]%c6ty  
I,lX;~xb  
package org.rut.util.algorithm.support; ^5D%)@~  
..K@'*u  
import org.rut.util.algorithm.SortUtil; -`8pahI  
+v.<Fw2k#  
/** ]<xzCPB  
* @author treeroot B@ xjwBUk  
* @since 2006-2-2 RDSkFK( D  
* @version 1.0 {O=PVW2S  
*/ #aua6V!"  
public class BubbleSort implements SortUtil.Sort{ z8@[]6cW  
K7-z.WTUR  
/* (non-Javadoc) 8)o%0#;0B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hE;|VSdo  
*/ cp)BPg  
public void sort(int[] data) { */6lyODf  
int temp; TFAd  
for(int i=0;i for(int j=data.length-1;j>i;j--){ +e87/\5  
if(data[j] SortUtil.swap(data,j,j-1); 4aGVIQ  
} $VxKv7:  
} GiK4LJ~cH)  
} E~y( @72)  
} Vm*E^ v  
 W<@9ndvH  
} ib\_MNIb  
Tfz _h~D  
选择排序: E Xxv  
;TC"n!ew  
package org.rut.util.algorithm.support; PNs*+/-S  
Xmm) z  
import org.rut.util.algorithm.SortUtil; bk=ee7E7>  
>\o._?xSA  
/** FX1H2N(  
* @author treeroot UasU/Q <   
* @since 2006-2-2 :Dj0W8V  
* @version 1.0 j>`-BN_  
*/ ;EB^1*A Ew  
public class SelectionSort implements SortUtil.Sort { aJ"m`5]=%  
%xv*#.<Vj  
/* `*ALb|4ilG  
* (non-Javadoc) f}t8V% ^E  
* bP Q=88*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8Drz i!}  
*/ ictV7)  
public void sort(int[] data) { QnA~,z/ .w  
int temp; 4:9N]1JCb  
for (int i = 0; i < data.length; i++) { 2}n7f7[/b  
int lowIndex = i; jx{wOb~oO)  
for (int j = data.length - 1; j > i; j--) { )*XD"-9  
if (data[j] < data[lowIndex]) { 5HaI$>h6  
lowIndex = j; ifcp!l+8  
} +ag_w}  
} 7Fx0#cS"\  
SortUtil.swap(data,i,lowIndex); T I|h  
} Fs3 :NH  
} [DZ|Ltv  
5P{[8PZxbV  
} PX*}.L *x  
63i&<  
Shell排序: :8`~dj.  
'3 b'moy  
package org.rut.util.algorithm.support; 2){O&8A  
3 "iBcsLn  
import org.rut.util.algorithm.SortUtil; 2?{'(i ay  
%Gl1Qi+Po_  
/** jV[;e15+  
* @author treeroot zI0d  
* @since 2006-2-2 +e, c'.  
* @version 1.0 oY+p;&H  
*/ *M)M!jTv  
public class ShellSort implements SortUtil.Sort{ l8khu)\n4R  
.DI?-=p|_#  
/* (non-Javadoc) O0FUJGuTS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gyb99c,)  
*/ F{4v[WP)  
public void sort(int[] data) { 58d[>0Xa[g  
for(int i=data.length/2;i>2;i/=2){ W4,'?o  
for(int j=0;j insertSort(data,j,i); fTso[r:F.  
} PXyv);#Q`  
} S@'%dN6e  
insertSort(data,0,1); _RIlGs\.  
} *7E#=xb  
$ x:N/mMu`  
/** I tb_ H  
* @param data zE<Iv\Q  
* @param j dr(-k3ex  
* @param i 14"+ctq  
*/ 7{]dh+)  
private void insertSort(int[] data, int start, int inc) { d@ >i=l [  
int temp; 1Au+X3   
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); r6nnRN/S=  
} _!E&%=f  
} 4i PVpro  
} ~8yh,U  
Z+u.LXc|c  
} 51`&%V{daL  
}h=PW'M{  
快速排序: M\/hK2J# #  
*`rfD*  
package org.rut.util.algorithm.support; uIbAlE  
ZSs@9ej  
import org.rut.util.algorithm.SortUtil; $C sE[+k1  
$4^SWT.  
/** %ioVNbrR7  
* @author treeroot S@Rd>4  
* @since 2006-2-2 0QT:@v2R  
* @version 1.0 -|Zzs4bx  
*/ ALy7D*Z]w  
public class QuickSort implements SortUtil.Sort{ /`l;u 7RD  
}W'4(V;:  
/* (non-Javadoc) ,<* I5:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n0!2-Q5U)h  
*/ f@$W5*j  
public void sort(int[] data) { +ZwoA_k{  
quickSort(data,0,data.length-1); A .Wf6o  
} t,Ka] /I  
private void quickSort(int[] data,int i,int j){ ^;'8yE/  
int pivotIndex=(i+j)/2; &y}7AV  
file://swap ,:e~aG,B  
SortUtil.swap(data,pivotIndex,j); Scx!h.\5  
'Y#'ozSQv  
int k=partition(data,i-1,j,data[j]); m$_b\^we  
SortUtil.swap(data,k,j); J_ h.7V  
if((k-i)>1) quickSort(data,i,k-1); I8YUq   
if((j-k)>1) quickSort(data,k+1,j); & W od  
*g,ls(r\[  
} +8C }%6aX  
/** Z[OX {_2]K  
* @param data PMpq>$6b7  
* @param i 0F@~[W|2  
* @param j a_V\[V{R=  
* @return F_(~b  
*/ s*[ I"iE  
private int partition(int[] data, int l, int r,int pivot) { .whi0~i  
do{ uE41"?GS  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); In^mE(8YO  
SortUtil.swap(data,l,r); >7PQOQMW'  
} MzX&|wimb  
while(l SortUtil.swap(data,l,r); =T,Q7Dh  
return l; 9-/q-,  
} aTTkj\4  
RARA_tii  
} 50QDqC-]XS  
,puoq {  
改进后的快速排序: 5, ,~k=  
|y[I!JdR  
package org.rut.util.algorithm.support; V:Gy pY)  
A4!X{qUT-  
import org.rut.util.algorithm.SortUtil; 6{buel(|e  
Wu^Rv-xA  
/** )gEE7Ex?  
* @author treeroot  C3{hf  
* @since 2006-2-2 fwv^dEe  
* @version 1.0 aL4^ po  
*/ rP3tFvOH  
public class ImprovedQuickSort implements SortUtil.Sort { &U7v=a  
88~Nrl=co  
private static int MAX_STACK_SIZE=4096; ;ND$4$  
private static int THRESHOLD=10; X7huc*  
/* (non-Javadoc) 2+rT .GFc  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }[;ZZm?  
*/ ?E"192 ,z@  
public void sort(int[] data) { D[/fs`XES  
int[] stack=new int[MAX_STACK_SIZE]; ?@9v+Am!  
6X*vCylI  
int top=-1; s|e.mZk/  
int pivot; ud  r\\5  
int pivotIndex,l,r; Yi%lWbr  
(|K+1R  
stack[++top]=0; <Z:FY|'s  
stack[++top]=data.length-1; B=TUZ)  
oI{.{]  
while(top>0){ hK3-j;eg  
int j=stack[top--]; |y U!d %  
int i=stack[top--]; yws'}{8  
Kf:!tRE  
pivotIndex=(i+j)/2; ZKXE7p i  
pivot=data[pivotIndex]; P!W%KobZ7|  
7P+1W \  
SortUtil.swap(data,pivotIndex,j); i90X0b-A  
'z;(Y*jb  
file://partition Xx{| [2`  
l=i-1; iz#R)EB/g  
r=j; N!(mM;1X)  
do{ o>r P\  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); &T,|?0>~=J  
SortUtil.swap(data,l,r); ZOEe-XW  
} E+lR&~mK=  
while(l SortUtil.swap(data,l,r); &SE}5ddC7  
SortUtil.swap(data,l,j); bgi_QB#k\  
KVa{;zBwl  
if((l-i)>THRESHOLD){ E2'Wzrovlo  
stack[++top]=i; -U/)y:k!%  
stack[++top]=l-1; 1 %P-X!  
} (N9-YP?qm  
if((j-l)>THRESHOLD){ JB~^J5#[Oh  
stack[++top]=l+1; wHj 1+W  
stack[++top]=j; MW 7~=T  
} * @4@eQF  
9fEe={ B+  
} H%O\4V2s  
file://new InsertSort().sort(data); Y1-dpML  
insertSort(data); [7I bT:ph  
} [f_^B U&  
/** O`~#X w  
* @param data OJcS%-~  
*/ /aI@2]|~  
private void insertSort(int[] data) { yjjq&Cn  
int temp; .7.lr[$g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 1%+-}yo<  
} CM_hN>%w[  
} 4=^_VDlpd  
} ~S/oW89  
bFG~08Z ,d  
} XPX?+W=mv  
(SyD)G\rj  
归并排序: W#F9Qw  
Hh1_zd|  
package org.rut.util.algorithm.support; XGB\rf vS  
@ b!]Jw  
import org.rut.util.algorithm.SortUtil; .yj@hpJM  
4/b.;$  
/** ,W}:vdC  
* @author treeroot B>fZH \Y  
* @since 2006-2-2 y0d=  
* @version 1.0 eA4D.7HDK  
*/ ,m=G9QcN  
public class MergeSort implements SortUtil.Sort{ EB[T 5{  
)q=F_:$  
/* (non-Javadoc) _eKO:Y[e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) pN[WYM?[  
*/ vh a9,5_  
public void sort(int[] data) { xsH1)  
int[] temp=new int[data.length]; M@cFcykK  
mergeSort(data,temp,0,data.length-1); |T|m5V'l  
} mXRkR.zu+  
9lb?%UFe  
private void mergeSort(int[] data,int[] temp,int l,int r){ 1,fR kQ  
int mid=(l+r)/2; r^~+ <"  
if(l==r) return ; >5CK&6  
mergeSort(data,temp,l,mid); (03/4*g_s  
mergeSort(data,temp,mid+1,r); S~Gse+*  
for(int i=l;i<=r;i++){ XRV]u|w=g  
temp=data; 3ay},3MCV%  
} XQy`5iv  
int i1=l; zV&l^.  
int i2=mid+1; 9^}&PEl  
for(int cur=l;cur<=r;cur++){ v$]B;;[A  
if(i1==mid+1) f7x2"&?vg  
data[cur]=temp[i2++]; 'zI(OnIS  
else if(i2>r) p/ ITg  
data[cur]=temp[i1++]; "#~>q(4^  
else if(temp[i1] data[cur]=temp[i1++]; <o%T]  
else t8*Jdd^3Z/  
data[cur]=temp[i2++]; %zcA|SefP  
} e(t}$Q=  
} 8FuxN2  
zS%XmS\  
} T?7u [D[[  
*BsK6iVb  
改进后的归并排序: Hm2Y% 4i%  
1[!:|=  
package org.rut.util.algorithm.support; g6,DBkv2  
|[.-pA^  
import org.rut.util.algorithm.SortUtil; 8%9 C<+.R  
/.SG? 5t4  
/** MKBDWLCB  
* @author treeroot c2P}P* _  
* @since 2006-2-2 JXc.?{LL  
* @version 1.0 (GC]=  
*/ L_Ok?9$  
public class ImprovedMergeSort implements SortUtil.Sort { D>7a0p784  
"/'3I/}  
private static final int THRESHOLD = 10; (7R?T}  
y#GHmHeh  
/* Cy;UyZ  
* (non-Javadoc) q}LDFsU  
* i\sBey ND"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dbby.%  
*/  QHNyH  
public void sort(int[] data) { ? Lg(,-:  
int[] temp=new int[data.length]; )]P(!hW.  
mergeSort(data,temp,0,data.length-1); :F:1(FDP  
} h1_Z&VJ  
}-oba_  
private void mergeSort(int[] data, int[] temp, int l, int r) { F rc  kA  
int i, j, k; uBlPwb,V  
int mid = (l + r) / 2;  (Q8!5s  
if (l == r) w/6X9d  
return; ?AyxRbk  
if ((mid - l) >= THRESHOLD) d>p' A_  
mergeSort(data, temp, l, mid); ` s7pM  
else aw*]b.f  
insertSort(data, l, mid - l + 1); flmQNrC.8  
if ((r - mid) > THRESHOLD) MfL7|b)  
mergeSort(data, temp, mid + 1, r); ~Gfytn9x.;  
else MltO.K!  
insertSort(data, mid + 1, r - mid); $*0-+h  
-#ZLu.  
for (i = l; i <= mid; i++) { *`H*@2  
temp = data; pAy4%|(  
} @ VWED  
for (j = 1; j <= r - mid; j++) { w ,j*I7V  
temp[r - j + 1] = data[j + mid]; NxHUOPAJc  
} X)3(.L  
int a = temp[l]; JWb +  
int b = temp[r]; b G:\*1T  
for (i = l, j = r, k = l; k <= r; k++) { U`(=iyWP=  
if (a < b) { CTNL->  
data[k] = temp[i++]; wMVUTm  
a = temp; 91]|4k93  
} else { WoTeIkM9  
data[k] = temp[j--]; gv`_+E{P  
b = temp[j]; 9S%5 Z>  
} So 1TH%  
} `58%&3lp  
} Yz/Blh%V  
^\ [p6>  
/** leC!Yj  
* @param data R/~!km  
* @param l t.( `$  
* @param i n#">k%bD  
*/ lx|Aw@C3~  
private void insertSort(int[] data, int start, int len) { R%jOgZG  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); [D~]  
} nCq'=L,m  
} 30sJ"hF9  
} QD@O!}; T  
} ?\Z pVL<>  
w % Hj'  
堆排序: [BE_^d5&  
=> (g_\  
package org.rut.util.algorithm.support;  R0Vt_7  
Eg)24C R 4  
import org.rut.util.algorithm.SortUtil; (%B{=w}8  
`H! (hMMV  
/** ?, pwYT0g  
* @author treeroot q=X<QhK  
* @since 2006-2-2 "KIY+7@S}  
* @version 1.0 hju^x8 ,=m  
*/  Fe!MA  
public class HeapSort implements SortUtil.Sort{ !)]/?&uo  
n#P>E( K  
/* (non-Javadoc) 1 m'.wh|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )-4c@  
*/ Xe_ <]|  
public void sort(int[] data) { D)PX|xrn  
MaxHeap h=new MaxHeap(); E*YmHJ:k  
h.init(data); B=cA$620  
for(int i=0;i h.remove(); 1K9.3n   
System.arraycopy(h.queue,1,data,0,data.length); v[ iJ(C_  
} '7'/+G'~&  
jF?0,g  
private static class MaxHeap{ \ *t\=4  
DSLX/u o1  
void init(int[] data){ 5sJ>+Rg  
this.queue=new int[data.length+1]; ) h]+cGM  
for(int i=0;i queue[++size]=data; 7z;2J;u`n  
fixUp(size); <W0(!<U  
} ??/bI~Sd  
} zx$YNjeV  
b\"F6TF:  
private int size=0; 6:2*<  
"p O  
private int[] queue; ]'pfw9"f~  
8w:ay,=  
public int get() { Tr?p/9.m  
return queue[1]; g4^-B  
}  R[m-jUL  
?^~ZsOd8B  
public void remove() { PlB3"{}0Q  
SortUtil.swap(queue,1,size--); *O$|,EsY  
fixDown(1); A"7YkOfwH  
} WR #XPbk  
file://fixdown lR %#R  
private void fixDown(int k) { &4OJJ9S  
int j; Ar>B_*dr  
while ((j = k << 1) <= size) { )|=1;L  
if (j < size %26amp;%26amp; queue[j] j++; V(TtOuv  
if (queue[k]>queue[j]) file://不用交换 _#K|g#p5  
break; }n&nuaj  
SortUtil.swap(queue,j,k); "bej#'M#  
k = j; +<\LY(o  
} 8[@,i|kgg0  
} +'m9b7+v  
private void fixUp(int k) { zLl-{Kk  
while (k > 1) { z- q.8~Z  
int j = k >> 1; 5X^\AW  
if (queue[j]>queue[k]) X4o#kW  
break; ~3s ?.[}d  
SortUtil.swap(queue,j,k); Y^]n>X  
k = j; o`CM15d*7o  
} RFbf2s\t  
} ;}Jv4Z  
{gzQ/|}#z-  
} CG%bZco((  
mPA)G,^  
} GSRf/::I}4  
!PIg ,  
SortUtil: bVcJ/+Yx|  
h?TIxo:6/  
package org.rut.util.algorithm; - egTZW-  
uYebRCdR  
import org.rut.util.algorithm.support.BubbleSort; boiP_*|MY  
import org.rut.util.algorithm.support.HeapSort; 4(htdn6\  
import org.rut.util.algorithm.support.ImprovedMergeSort; QI[WXx p  
import org.rut.util.algorithm.support.ImprovedQuickSort; pBAAwHD  
import org.rut.util.algorithm.support.InsertSort; `RY}g;  
import org.rut.util.algorithm.support.MergeSort; DQ0S]:tC  
import org.rut.util.algorithm.support.QuickSort; ZW?h\0Hh  
import org.rut.util.algorithm.support.SelectionSort; -9 LvAV>  
import org.rut.util.algorithm.support.ShellSort; \8#[AD*@s2  
JcRxNH )<"  
/** V~PGmn[V  
* @author treeroot ]n4PM=hz  
* @since 2006-2-2 ;C-ds  
* @version 1.0 }h1BAKg  
*/ {eU>E /SQ  
public class SortUtil { p@78Xmu?q  
public final static int INSERT = 1; UG.:D';3,  
public final static int BUBBLE = 2; v^eAQoFLhN  
public final static int SELECTION = 3; >C,0}lj  
public final static int SHELL = 4; rZ,qHM  
public final static int QUICK = 5; MZ%J ]Nd  
public final static int IMPROVED_QUICK = 6; i@:^b_  
public final static int MERGE = 7; OX.5o lb  
public final static int IMPROVED_MERGE = 8; kVLZdXn,q2  
public final static int HEAP = 9; | K|AUI  
y3j$?o M  
public static void sort(int[] data) { nO yG7:  
sort(data, IMPROVED_QUICK); JA{kifu0+  
} 1!1,{\9%  
private static String[] name={ 8@vq.z}  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" f/L8usBXq  
}; y={ k7  
W.4R+kF<  
private static Sort[] impl=new Sort[]{ MVM Jl">  
new InsertSort(), !43nL[]  
new BubbleSort(), +m JG:n  
new SelectionSort(), _*}D@yy&  
new ShellSort(), w5q6c%VZ  
new QuickSort(), skeeec\V  
new ImprovedQuickSort(), MNU7OX<  
new MergeSort(), pej-W/R&  
new ImprovedMergeSort(), (f"Qz~R|6_  
new HeapSort() !ldE9 .  
}; n%h00 9 -5  
4r;le5@  
public static String toString(int algorithm){ pKXSJ"Xo  
return name[algorithm-1]; \ MuKS4  
} #HL$`&m  
0qR#o/~I  
public static void sort(int[] data, int algorithm) { W+u@UJi  
impl[algorithm-1].sort(data); +;!^aNJ,  
} eAO@B  
G>^= Bm_$  
public static interface Sort { q h bagw~  
public void sort(int[] data); .\H-?6R^  
} &2:WezDF  
!rgXB(  
public static void swap(int[] data, int i, int j) { zx)}XOYf  
int temp = data; <O) if^  
data = data[j]; bZSt<cH3  
data[j] = temp; =?L16mu1&  
} )%/ Ni^  
} "o%okN  
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