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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。 >b/k|?xP  
插入排序: fwar8 i1  
C.Wms}XA  
package org.rut.util.algorithm.support; i`ZHjW~`  
A>ug'.  
import org.rut.util.algorithm.SortUtil; XSL t;zL:  
/** +S:u[x  
* @author treeroot xIq"[?m  
* @since 2006-2-2 &+|jJ{93z  
* @version 1.0 75^)Ni  
*/ w|K(>5nz  
public class InsertSort implements SortUtil.Sort{ %nG~u,_2f  
S>vVjq?~l(  
/* (non-Javadoc) `CTkx?e[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]ouUv7\  
*/ )edU <1P  
public void sort(int[] data) { xC=3|,U  
int temp; E@'CU9Fo  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Ot4;,UZ  
} uHujw.H/y  
} a3(7{,Ew  
} "`V"2zZlj  
^bY^x+d  
} K"t:B  
eKU@>5  
冒泡排序: 8)ebXc  
l{D,O?`Av  
package org.rut.util.algorithm.support; G*{u(x(  
f"Vm'0r  
import org.rut.util.algorithm.SortUtil; b@Mng6R  
sEgeS9a{  
/** Fh3Dc 83~  
* @author treeroot f6aT[Nw<  
* @since 2006-2-2 1,*Z_ F=y  
* @version 1.0 1Q2k>q8  
*/ ??esB&4?  
public class BubbleSort implements SortUtil.Sort{ ,*O{jc`(  
WMdz+^\(  
/* (non-Javadoc) <or>bo^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {XVf|zM,  
*/ }fa%JN %E  
public void sort(int[] data) { n79DS(t  
int temp; g)zn.]  
for(int i=0;i for(int j=data.length-1;j>i;j--){ }GU6Q|s[u[  
if(data[j] SortUtil.swap(data,j,j-1); Y&cjJ`rw  
} VEdnP+D  
} 8d*<Aki?;  
} `'WY'\|C  
} 88+\mX;A#  
oJz:uv8Pe.  
} {1-CfQ0 8  
3<.j`JB@&  
选择排序: GXv o't@N  
aR(Z~z;C  
package org.rut.util.algorithm.support; (HX[bG`  
eABdy e  
import org.rut.util.algorithm.SortUtil; "'p+qbT8  
$d"f/bRWy  
/** \ ]e w@C  
* @author treeroot i6\!7D]  
* @since 2006-2-2 gm%bxr@X~  
* @version 1.0 3lrZ-k+S{  
*/ x#}eC'Q  
public class SelectionSort implements SortUtil.Sort { 1 0Tg > H  
Gv2./<{#  
/* PTc\I  
* (non-Javadoc) =g>7|?6>=  
* D 5wR?O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2KNKdV3NK  
*/ HBf8!\0|/  
public void sort(int[] data) { @ 6VH%  
int temp; -L'`d  
for (int i = 0; i < data.length; i++) { i:N^:%  
int lowIndex = i; %dWFg<< |  
for (int j = data.length - 1; j > i; j--) { ~9>[U%D  
if (data[j] < data[lowIndex]) { g(}8n bTA  
lowIndex = j; ~[/c'3+4qn  
} =K< I)2   
} W/F4wEODY  
SortUtil.swap(data,i,lowIndex); c+K=pp@  
} uJ5%JB("E  
} UFY~D"% /  
ZK_@.O+]  
} =&g}Y  
aD3F!Sn  
Shell排序: v]Q_  
DP'Dg /D  
package org.rut.util.algorithm.support; r D!.N   
|>fS"u  
import org.rut.util.algorithm.SortUtil; `]I5WTt*X  
N(/<qv  
/** z&J ow/  
* @author treeroot ALieUf  
* @since 2006-2-2 [<1+Q =;  
* @version 1.0 [q{Txe  
*/ $j2)_(<A%Q  
public class ShellSort implements SortUtil.Sort{ +mW$D@Pf  
 #=~1hk  
/* (non-Javadoc) N~<}\0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) la{:RlW  
*/ oZcwbo8  
public void sort(int[] data) { d`][1rZk  
for(int i=data.length/2;i>2;i/=2){ 6)2M/(  
for(int j=0;j insertSort(data,j,i); )tQ6rd'  
} U.sPFt  
} T9v#Jb6  
insertSort(data,0,1); !U~#H_  
} j I@$h_n  
v^I%Wm  
/** o*ED!y7  
* @param data 8q[WfD  
* @param j >(4S `}K  
* @param i r@ *A   
*/ "?(Fb_}i  
private void insertSort(int[] data, int start, int inc) { \kGtYkctZ  
int temp; 7tO$'q*h  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); U;dt-3?=.h  
} 2o}G<7r  
} NcMq>n  
} <>/MKMq!  
^* v{t?u  
} "X}F%:HL  
$P9$ ,w4  
快速排序: `V2j[Fz  
gbv[*R{<%  
package org.rut.util.algorithm.support; H D ^~4\%  
${,eQ\  
import org.rut.util.algorithm.SortUtil; wmCV%g\.d:  
;mKU>F<V  
/** /;m!>{({)  
* @author treeroot >w#3fTJ  
* @since 2006-2-2 .vF< 3p|  
* @version 1.0 _q}%!#4  
*/ T.N7`  
public class QuickSort implements SortUtil.Sort{ 1gK3= Ys  
!fjU?_[S  
/* (non-Javadoc) MQMy Z:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h#;K9#x6  
*/ i4C b&h^  
public void sort(int[] data) { QjbPBk Q  
quickSort(data,0,data.length-1); rX d2[pp  
} Y]0y -H  
private void quickSort(int[] data,int i,int j){ ghR]$SG  
int pivotIndex=(i+j)/2; CP#MNNvgrw  
file://swap R*#Q=_  
SortUtil.swap(data,pivotIndex,j); T>o# *{q n  
W/X;|m`  
int k=partition(data,i-1,j,data[j]); z`7C)p:  
SortUtil.swap(data,k,j); *fX)=?h56  
if((k-i)>1) quickSort(data,i,k-1); K1nwv"  
if((j-k)>1) quickSort(data,k+1,j); R@aT=\u+  
zQfxw?~A  
} yC$7XSr=  
/** -T6%3>h  
* @param data H pfI  
* @param i =W^L8!BE'  
* @param j Z6ex<[`I  
* @return u;1NhD<n  
*/ f^)nZ:~  
private int partition(int[] data, int l, int r,int pivot) { xF31%b`z:  
do{ 'J2P3t  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3goJ(XI  
SortUtil.swap(data,l,r); _j tS-CnO  
} &y+*3,!n8  
while(l SortUtil.swap(data,l,r); yKhzymS}T  
return l; $X]v;B)J|  
} z:7F5!Z  
BJr Nbo;T  
} +'4dP#  
d0,F'?.0|  
改进后的快速排序: j"=jK^  
m,q<R1  
package org.rut.util.algorithm.support; bv];Gk*Z-  
>p:fWQ6  
import org.rut.util.algorithm.SortUtil; }TLC b/+  
bcs(#  
/** _9 O'  
* @author treeroot bJ}+<##  
* @since 2006-2-2 C(+BrIS*  
* @version 1.0 WR1,J0UU6  
*/ QX|K(`of  
public class ImprovedQuickSort implements SortUtil.Sort { }'- )  
-*r';Mz;  
private static int MAX_STACK_SIZE=4096; )j*qGsOg  
private static int THRESHOLD=10; :UciFIa  
/* (non-Javadoc) 7QFEQ}  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,FO|'l  
*/ "G(/MT^C  
public void sort(int[] data) { =? aB@&  
int[] stack=new int[MAX_STACK_SIZE]; __npX_4%S  
$sJfxh r  
int top=-1; gC-0je  
int pivot; xn[di-L F  
int pivotIndex,l,r; \}W.RQ^3  
2uEu,YC  
stack[++top]=0; N*W.V,6yH  
stack[++top]=data.length-1; AG2jl/  
c5pG?jr+d  
while(top>0){ w:v:znQrW  
int j=stack[top--]; x N)Ck76  
int i=stack[top--]; Op~+yMef  
`6su_8Hno  
pivotIndex=(i+j)/2; sJ=B:3jS0  
pivot=data[pivotIndex]; {D< ?.'  
wl9icrR>  
SortUtil.swap(data,pivotIndex,j); " Xc=<rX  
O:)@J b2  
file://partition _aYQ(FO  
l=i-1; 2ra4t]f6  
r=j; hI 0l2OE  
do{ qMOD TM~+  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); !}?]&[N=  
SortUtil.swap(data,l,r); ;GSj }Nq  
} Sa5y7   
while(l SortUtil.swap(data,l,r); s5e}X:  
SortUtil.swap(data,l,j); i9tM]/SP  
L zC~>Uj  
if((l-i)>THRESHOLD){ Sq%R  
stack[++top]=i; Vo()J4L  
stack[++top]=l-1; xH uyfQLk  
} <D}k@M Z  
if((j-l)>THRESHOLD){ ww,'n{_  
stack[++top]=l+1; Ns(F%zkm  
stack[++top]=j; "H8N,eb2  
} J .d<5`7   
{rQ`#?J}^?  
} ML-g"wv  
file://new InsertSort().sort(data); wC~Uy%  
insertSort(data); _45"Z}Zx  
} `N+ P ,  
/** 10(N|2'q  
* @param data u QCS%|8C  
*/ ]LjW,b"  
private void insertSort(int[] data) { A:(uK>5{Kk  
int temp; d|3[MnU[a  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |EunDb[Y  
} cxV3Vrx@A  
} gO%3~f!vY#  
} l"/Os_4O  
=8-e1R/  
} -L@=j  
zuw6YY8kQ  
归并排序: N{0 D<"  
rcCM x"L=  
package org.rut.util.algorithm.support; :M16ijkx  
"- AiC6u  
import org.rut.util.algorithm.SortUtil; ?FyA2q!  
dL>ZL1.$  
/** ,O(uuq  
* @author treeroot &I8ZVtg  
* @since 2006-2-2 L`6`NYR  
* @version 1.0 90a= 39kI  
*/ %"D-1&%zY  
public class MergeSort implements SortUtil.Sort{ %-D2I  
eo !{rs@f  
/* (non-Javadoc) Jh1fM`kB5K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #\qES7We 6  
*/ MeC@+@C  
public void sort(int[] data) { oID, PB*9  
int[] temp=new int[data.length]; &LE/hA  
mergeSort(data,temp,0,data.length-1); c)?y3LX  
} 7o3f5"z  
*"wsMO  
private void mergeSort(int[] data,int[] temp,int l,int r){ %0 S0"t  
int mid=(l+r)/2; v2NzPzzyb  
if(l==r) return ; S"*wP[d.9  
mergeSort(data,temp,l,mid); zKo,B/Ke4  
mergeSort(data,temp,mid+1,r); 5n<Efi]j  
for(int i=l;i<=r;i++){ t+t&eg  
temp=data; HzV3O-Qz]  
} K7|BXGL8r8  
int i1=l; 6;Bqu5_Cj  
int i2=mid+1; %5b2vrg~*  
for(int cur=l;cur<=r;cur++){ N]3XDd|q  
if(i1==mid+1) d}1R<Q;F  
data[cur]=temp[i2++]; tG'c79D\  
else if(i2>r) bLg1Dd7Q  
data[cur]=temp[i1++]; kjH0u$n  
else if(temp[i1] data[cur]=temp[i1++]; C.eZcNJG  
else b$hQB090  
data[cur]=temp[i2++]; tlE+G@|^  
} !"Kg b;A  
} V<b"jCXI  
n,`&f~tap  
} tq{ aa  
w;XXjT  
改进后的归并排序: ffdyDUzQ  
z' @F@k6  
package org.rut.util.algorithm.support; opKtSF|)  
D9h\=[%e  
import org.rut.util.algorithm.SortUtil; Hly$ Wm  
HghNI  
/** ~%cbp&s*/q  
* @author treeroot E$gcd#rT  
* @since 2006-2-2 9i n&\  
* @version 1.0 b1-JnEc  
*/ =KkHck33  
public class ImprovedMergeSort implements SortUtil.Sort { a4?:suX$  
P:=3;d{v  
private static final int THRESHOLD = 10; J^U#dYd  
*g7dB2{  
/* $%LjIeVA5  
* (non-Javadoc) X=lOwPvP  
* mDtD7FzJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t<rhrW75P  
*/  vO 3fAB  
public void sort(int[] data) { Ef69]{E  
int[] temp=new int[data.length]; ) b?HK SqI  
mergeSort(data,temp,0,data.length-1); (V*ggii@  
} M^a QH/=:"  
I_4'9  
private void mergeSort(int[] data, int[] temp, int l, int r) { P'[w9'B  
int i, j, k; u>}k+8~  
int mid = (l + r) / 2; Eg>MG87  
if (l == r) _jp8;M~Z  
return; F9N)UW:w  
if ((mid - l) >= THRESHOLD) M%Ov6u<I8  
mergeSort(data, temp, l, mid); tT'+3  
else aB.`'d)V  
insertSort(data, l, mid - l + 1); 7cH[}v`pn  
if ((r - mid) > THRESHOLD) %c):^;6p  
mergeSort(data, temp, mid + 1, r); ]*?qaIdqu  
else Ao2t=vg  
insertSort(data, mid + 1, r - mid); $5l8V  
VUk2pEGO.  
for (i = l; i <= mid; i++) { in$Pk$ c  
temp = data; X2~>Z^, U  
} *:wu{3g}M`  
for (j = 1; j <= r - mid; j++) { 0Db#W6*^  
temp[r - j + 1] = data[j + mid]; *G^ QS"%  
} Drz#D1-2  
int a = temp[l]; Z':}ZXy]  
int b = temp[r]; - 3kg,=HU;  
for (i = l, j = r, k = l; k <= r; k++) { 4Y[tx]<  
if (a < b) { !h4L_D0  
data[k] = temp[i++]; mJl|dk_c  
a = temp; qlO(z5Ak  
} else { Z8Qmj5'[  
data[k] = temp[j--]; Ry8@U9B6,t  
b = temp[j]; l:%4@t`  
} |\J8:b> }  
} w`q):yXX  
} wjDLsf,  
f3h^R20qmO  
/** 5#~u U  
* @param data vzG(u_,9[  
* @param l 6Dwj^e0  
* @param i _Uc le  
*/ Srg `Tt]  
private void insertSort(int[] data, int start, int len) { v [\' M  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); wS9EC}s:Q  
} g^/  
} 3+rud9T  
} 6"b =aPTi  
} @Pb!:HeJE  
U:"E:Bxz;m  
堆排序: f 0D9Mp  
_ 7X0  
package org.rut.util.algorithm.support; k%Jv%m}aB  
Mt"j< ]EW  
import org.rut.util.algorithm.SortUtil; C;QIp6"1  
0x*L"HD  
/** _gxI=EYi  
* @author treeroot F6`$5%$M;?  
* @since 2006-2-2 8K=sx @l  
* @version 1.0 1--_E,Su>  
*/ x8+W9i0[1  
public class HeapSort implements SortUtil.Sort{ v@(Y:\>  
,onOwPz  
/* (non-Javadoc) fL>>hBCqC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fO|oV0Rw  
*/ )5Mf,  
public void sort(int[] data) { *EY^t=  
MaxHeap h=new MaxHeap(); d2Pqi* K  
h.init(data); 9)}Nx>K  
for(int i=0;i h.remove(); vau0Jn%=ck  
System.arraycopy(h.queue,1,data,0,data.length); 3Uw}!>`%  
} {a;my"ly  
JI##l:,7r  
private static class MaxHeap{ R-5EztmLae  
XpFW(v  
void init(int[] data){ ;n0VF77>O  
this.queue=new int[data.length+1]; h2<Y*j  
for(int i=0;i queue[++size]=data; JL.noV3q$  
fixUp(size); =wE1j  
} qn=~4rg]R  
} I*hCIy#;  
+X#JCLD  
private int size=0; Kw_> X&GcJ  
[Vzp D 4  
private int[] queue; FtHR.S= u  
IY jt*p5  
public int get() { rXgU*3 RG  
return queue[1]; b5NPG N  
} >LS*G qjq  
IWc?E  
public void remove() { tj<a , l  
SortUtil.swap(queue,1,size--); [Tmpj9! q  
fixDown(1); `_M*2(rt  
} XpS].P9  
file://fixdown !} ~K'1"  
private void fixDown(int k) { [ed6n@/O@  
int j; %+0 7>/  
while ((j = k << 1) <= size) { A"ApWJ3  
if (j < size %26amp;%26amp; queue[j] j++; &b~if}vcb  
if (queue[k]>queue[j]) file://不用交换 x"7`,W  
break; JWzN 'a R  
SortUtil.swap(queue,j,k); ] /w: 5o#  
k = j; w=Cq v~  
} /1OzX'5f  
} JzI/kH~  
private void fixUp(int k) { l.gt+e  
while (k > 1) { c0}* $e  
int j = k >> 1; =GGt:3Kx-  
if (queue[j]>queue[k]) I#?NxP\S  
break; u^5X@ .  
SortUtil.swap(queue,j,k); 98"/]ERJ  
k = j; iPoh2  
} n^kszIu~  
} Y367Jr@^N  
EkWipF(  
} Wg\`!T  
c:>&iB-Yu  
} ZoFQJJK56B  
xweV8k/  
SortUtil: YI0ubB  
3"9'MDKH  
package org.rut.util.algorithm; GP|G[  
ur*@TIvD  
import org.rut.util.algorithm.support.BubbleSort; (`nn\)  
import org.rut.util.algorithm.support.HeapSort; 35>VCjCw0  
import org.rut.util.algorithm.support.ImprovedMergeSort; Ro1b (+H  
import org.rut.util.algorithm.support.ImprovedQuickSort; ea7l:(C  
import org.rut.util.algorithm.support.InsertSort; <S/`-/= 2  
import org.rut.util.algorithm.support.MergeSort; LY> -kz]  
import org.rut.util.algorithm.support.QuickSort; 8~q%H1[I\N  
import org.rut.util.algorithm.support.SelectionSort; ;ndsq[k>  
import org.rut.util.algorithm.support.ShellSort; <Vu/6"DP  
z^xrB$8 u  
/** cU`sA_f  
* @author treeroot n+Bh-aV  
* @since 2006-2-2 fYv= yP~  
* @version 1.0 gt~hUwL  
*/ _DlkTi5(w  
public class SortUtil { 4|PNsHXt  
public final static int INSERT = 1; \*24NB  
public final static int BUBBLE = 2; 1lAx"VL  
public final static int SELECTION = 3; "'M>%m u  
public final static int SHELL = 4; @#wBK3Ut^  
public final static int QUICK = 5; Tno[LP,  
public final static int IMPROVED_QUICK = 6; kaK0'l2%  
public final static int MERGE = 7; G?`x$UU  
public final static int IMPROVED_MERGE = 8; ]gxt+'iAFS  
public final static int HEAP = 9; 8V]oR3'  
?$:;hGO.<~  
public static void sort(int[] data) { 7F=Xn@ _  
sort(data, IMPROVED_QUICK); EKwA1,Xz  
} x^s2bb  
private static String[] name={ X}!r4<;(  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" !sbKJ+V7  
}; HkgmZw,  
'%k<? *  
private static Sort[] impl=new Sort[]{ c_oI?D9  
new InsertSort(), [;IW'cXNq  
new BubbleSort(), <M//zXa  
new SelectionSort(), EqY e.dF,  
new ShellSort(), +}MV$X  
new QuickSort(), H\Bh Af  
new ImprovedQuickSort(), gc%aaYf>  
new MergeSort(), +W=  
new ImprovedMergeSort(), q '6gj  
new HeapSort() $M `%A  
}; iGCA>5UE  
A(!nT=0o  
public static String toString(int algorithm){ "Zu hN(-`  
return name[algorithm-1]; {|{}]B  
} y(I_ 6+B^  
]{` 8C  
public static void sort(int[] data, int algorithm) { In%K  
impl[algorithm-1].sort(data); W>ZL[BQ  
} C&d%S|:IR  
X<6Ro es2  
public static interface Sort { co <ATx  
public void sort(int[] data); ]6PX4oK_t  
} A (:7q4  
UIpW#t  
public static void swap(int[] data, int i, int j) { je9eJUKE  
int temp = data; q?Jd.r5*  
data = data[j]; uyd y[n\  
data[j] = temp; 2(s+?n.N  
} IV"OzQONx  
} ^>?E1J3u  
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