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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。 Ja"?Pb  
插入排序:  l|j  
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package org.rut.util.algorithm.support; WB K6Ug  
4hz T4!15  
import org.rut.util.algorithm.SortUtil; ))66_bech  
/** whxTCIV  
* @author treeroot .J"QW~g^  
* @since 2006-2-2 Uc^eIa@  
* @version 1.0 )%dxfwd6  
*/ j 4!$[h  
public class InsertSort implements SortUtil.Sort{ x8 _f/2&  
L 4V,y>  
/* (non-Javadoc) ose(#n40  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) nm Y_)s  
*/ nl5A{ s  
public void sort(int[] data) { #oW" 3L{,  
int temp; < KG q  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); -n FKP&P  
} 9kHVWDf  
} vJ9I z  
} ^m~&2l\N=  
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} ,sI<AFI  
x{4{.s%+:  
冒泡排序: WX6}@mS.  
%;_94!(hC  
package org.rut.util.algorithm.support; Xdh2  
cD6S;PSg  
import org.rut.util.algorithm.SortUtil; hz:h>Hwy  
0xVw{k}1U  
/** =HMa<"-8  
* @author treeroot M#n lKj<  
* @since 2006-2-2 *,& 2?E8  
* @version 1.0 J/LsL k  
*/ R!f<6l8#W  
public class BubbleSort implements SortUtil.Sort{ t xE=AOY5  
t.y-b`v  
/* (non-Javadoc) :^7>kJ5?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ttOk6-  
*/ G?kK:eV  
public void sort(int[] data) { =' uePM")  
int temp; 7-:R{&3Lm:  
for(int i=0;i for(int j=data.length-1;j>i;j--){ .V4-  
if(data[j] SortUtil.swap(data,j,j-1); (Zg'])  
} 50_[n$tqE  
} plL|Ubn  
} J-#V_TzJ?  
} NNt  n  
&hEn3u  
} &S,_Z/BS;  
0vETg'r  
选择排序: vj jVZ  
FFa =/XB"  
package org.rut.util.algorithm.support; TZ *>MySiF  
}@eIO|  
import org.rut.util.algorithm.SortUtil; :*f  2Bn  
@}=(4%  
/** hw$!LTB2  
* @author treeroot u 3^pQ6Q  
* @since 2006-2-2 b9-IrR4h  
* @version 1.0 nr2 Q[9~  
*/ _Jy7` 4B.  
public class SelectionSort implements SortUtil.Sort { F~q(@.b  
N=AHS  
/* Kv<f< >|L  
* (non-Javadoc) pO_IUkt  
* j$K*R."  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AbxhNNK  
*/ z',Fa4@z  
public void sort(int[] data) { I`zd:o]  
int temp; 5r`rstV  
for (int i = 0; i < data.length; i++) { K+pVRDRcs  
int lowIndex = i; yQuL[#p  
for (int j = data.length - 1; j > i; j--) { h2 KI  
if (data[j] < data[lowIndex]) { 6<2H 7'  
lowIndex = j; 9w$m\nV  
} =:aJZ[UU<2  
} w lH\w?  
SortUtil.swap(data,i,lowIndex); T'9ZR,{F  
} -Arsmo  
} 3 P9ux  
jUEgu  
} ki?h7  
! !A0K"h  
Shell排序: #F`A(n  
t%;w<1E  
package org.rut.util.algorithm.support; 2 /FQ;<L  
(J[Xryub  
import org.rut.util.algorithm.SortUtil; lDTHK2f  
J91[w?,  
/** E7t;p)x  
* @author treeroot L8 L1_  
* @since 2006-2-2 =A.$~9P  
* @version 1.0 Y8zTw`:V  
*/ #0>xa]S  
public class ShellSort implements SortUtil.Sort{ MC* Hl`C  
^cm ] [9  
/* (non-Javadoc) g:>'+(H;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T9C_=0(hn  
*/ `PC9t)%.pV  
public void sort(int[] data) { F}5d>nw  
for(int i=data.length/2;i>2;i/=2){ 6Q^~O*cw  
for(int j=0;j insertSort(data,j,i); V&w2pp0  
} 7~ PL8  
} 2%dL96  
insertSort(data,0,1); ;$QC_l''b  
} 27EK +$  
@eJCr)#}  
/** N7?B"p/  
* @param data 1Y|a:){G  
* @param j j-":>}oW2.  
* @param i yd).}@  
*/ N% 4"9K  
private void insertSort(int[] data, int start, int inc) { GC{M"q|_  
int temp; 83n%pS4x  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); eXW|{asx  
} $@>0;i ::  
} u.gg N=Z  
} BDT L5N  
rW:krx9  
} );$99t  
TaN{xpo  
快速排序: /8FmPCp}r  
_y@].G  
package org.rut.util.algorithm.support; mHxR4%i5  
Fl-\{vOn  
import org.rut.util.algorithm.SortUtil; !cwZ*eM  
qI+2,6 sGI  
/** Upe}9xf  
* @author treeroot ]mTBD<3\  
* @since 2006-2-2 >2'"}np*  
* @version 1.0 w G%W{T$  
*/ ;V xRaj?  
public class QuickSort implements SortUtil.Sort{ TmsIyDcD~  
/|IPBU 5  
/* (non-Javadoc) vrkY7L3\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X2z<cJG|d@  
*/ U ? +_\  
public void sort(int[] data) { x4oWZEd  
quickSort(data,0,data.length-1); =]Vz= <  
} |A%9c.DG.  
private void quickSort(int[] data,int i,int j){  lN,?N{6s  
int pivotIndex=(i+j)/2; j]Jgz<  
file://swap BAf$ty h  
SortUtil.swap(data,pivotIndex,j); Y@UkP+{f=  
j3gDGw;  
int k=partition(data,i-1,j,data[j]); UEU/505  
SortUtil.swap(data,k,j); =dmr ,WE  
if((k-i)>1) quickSort(data,i,k-1); T5(S2^)o  
if((j-k)>1) quickSort(data,k+1,j); iwotEl0*{  
Vw;Z0_C  
} '<R>cN"  
/** R4m {D  
* @param data 5*AXL .2ih  
* @param i Zt`Tg7m  
* @param j 4:`D3  
* @return hF%M!otcJ-  
*/ qt@L&v}~j  
private int partition(int[] data, int l, int r,int pivot) { JvpGxj  
do{ ]~({;;3o-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); m`/Nl<  
SortUtil.swap(data,l,r); 9iA rBL"  
} rbZbj#  
while(l SortUtil.swap(data,l,r); @5Xo2}o-Q  
return l; KdkA@>L!;  
} '5e,@t%y  
\|]mClj#  
} C=: <[_m`  
VdLoi\-/L  
改进后的快速排序: H@Dpht>[  
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package org.rut.util.algorithm.support; 0 j.K?]f)h  
E}@C4pS  
import org.rut.util.algorithm.SortUtil; " kDiK`i  
J2YQdCL  
/** jD: N)((  
* @author treeroot %;PpwI  
* @since 2006-2-2 %#HU~X:  
* @version 1.0 0MG>77  
*/ 5E]t4"  
public class ImprovedQuickSort implements SortUtil.Sort { i0vm00oT  
p/.8})c1r  
private static int MAX_STACK_SIZE=4096; c{z$^)A/  
private static int THRESHOLD=10; ;]{ee?Q^ld  
/* (non-Javadoc) B,%Vy!o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) yvAO"43  
*/ [q <'ty  
public void sort(int[] data) { kv+%  
int[] stack=new int[MAX_STACK_SIZE]; sV\_DP/l  
C]`uC^6g  
int top=-1; *l2`- gbE  
int pivot; c8l>OS5i3_  
int pivotIndex,l,r; j4.wd RK  
+iVEA(0&$  
stack[++top]=0; p"g|]@m  
stack[++top]=data.length-1; ,eXtY}E  
h>N}M}8  
while(top>0){ GG} %  
int j=stack[top--]; wPA^nZ^}9c  
int i=stack[top--]; __=H"UhWv  
79\ wjR!T  
pivotIndex=(i+j)/2; _P>YG<*"kQ  
pivot=data[pivotIndex]; #[93$)Gd!  
IGlR,tw_/  
SortUtil.swap(data,pivotIndex,j); k]b*&.EY1  
).T&fa"  
file://partition -%nD'qy,.  
l=i-1; 18X@0e  
r=j; g3R(,IH  
do{ Syk)S<  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); N]<(cG&p  
SortUtil.swap(data,l,r); vQAFgG  
} FFHq':v  
while(l SortUtil.swap(data,l,r); :^;c(>u{  
SortUtil.swap(data,l,j); R.~[$G!  
D /eH~  
if((l-i)>THRESHOLD){ 9!FX *}dC  
stack[++top]=i; !jCgTo y  
stack[++top]=l-1; i?00!t  
} / f%mYL  
if((j-l)>THRESHOLD){ d2k-MZuT6  
stack[++top]=l+1; K/Q"Z*  
stack[++top]=j; _( W@FS  
} dG\ wW@}J  
YeH!v, >  
} 1W^hPY  
file://new InsertSort().sort(data); y<)TYr  
insertSort(data); aSL`yuXu  
} 1+l8%G=hB  
/** rIyH/=;  
* @param data ;b~ S/   
*/ _;lw,;ftA  
private void insertSort(int[] data) { tFN >]`Z  
int temp; $] 6u#5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1);  @MW@mP)#  
} Zt=|q$"  
} Q&9 yrx.  
} )uPJ? 2S9  
mU'<:gL+  
} RNg?o [S  
96=<phcwN[  
归并排序: ]hl*6  
ys_2?uv  
package org.rut.util.algorithm.support; >)><u4}  
_)A|JC!jId  
import org.rut.util.algorithm.SortUtil; 1{}p_"s>  
U& ?hG>  
/** ^X#y'odtbS  
* @author treeroot RObnu*  
* @since 2006-2-2 +v~x gUs  
* @version 1.0 i"{O~[  
*/ e#Tv5O  
public class MergeSort implements SortUtil.Sort{ TpjiKM  
m]p{]6h  
/* (non-Javadoc) *}[\%u$ T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ;>6< u.N  
*/ wxN)d B  
public void sort(int[] data) { GES}o9?#  
int[] temp=new int[data.length];  rxY|&!f  
mergeSort(data,temp,0,data.length-1); e UPa5{P  
} o%d TcoCN  
@s5=6z]=H  
private void mergeSort(int[] data,int[] temp,int l,int r){ eP{srP3 9  
int mid=(l+r)/2; QX,$JM3  
if(l==r) return ; kZ]H[\Fs  
mergeSort(data,temp,l,mid); Na\ZV|;*tu  
mergeSort(data,temp,mid+1,r); j3-YZKpg  
for(int i=l;i<=r;i++){ [KDxB>R<{  
temp=data; `e[S Zj\  
} "*g+qll!5d  
int i1=l; X/_I2X  
int i2=mid+1; AtT7~cVe  
for(int cur=l;cur<=r;cur++){ 86&M Zdv6  
if(i1==mid+1) KK|w30\f  
data[cur]=temp[i2++]; QcegT/vO  
else if(i2>r) 0K!3Ny9(  
data[cur]=temp[i1++]; eJDZ| $  
else if(temp[i1] data[cur]=temp[i1++]; z^Hc'oVXj:  
else 0<M-asI?  
data[cur]=temp[i2++]; W.wPy@yi  
} $8EEtr,!  
} P.~UU S  
HC`0Ni1  
} 5Xy(za  
;(Yb9Mr)z  
改进后的归并排序: MK< y$B{}  
('J/Ww<  
package org.rut.util.algorithm.support; o3WOp80hz  
/:|vJ|dJ  
import org.rut.util.algorithm.SortUtil; >P6"-x,["  
awLvLkQb{  
/** a~o <>H  
* @author treeroot I&PJ[U#~a  
* @since 2006-2-2 )f8>kz(  
* @version 1.0 u@a){ A(P  
*/ y\Wn:RR1[  
public class ImprovedMergeSort implements SortUtil.Sort { _H]\  
@T1G#[C~t  
private static final int THRESHOLD = 10; ]m1fo'  
UpoSC  
/* # :+Nr  
* (non-Javadoc) Y,]Lk<Hm3  
* /2^L;#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "2%z;!U1  
*/ aq,1'~8XR  
public void sort(int[] data) { xC76jE4  
int[] temp=new int[data.length]; 0TN28:hcD  
mergeSort(data,temp,0,data.length-1); (P>nA3:UXB  
} *,u3Wm|7  
,05PYBc3  
private void mergeSort(int[] data, int[] temp, int l, int r) { y<`5  
int i, j, k; LKN7L kl  
int mid = (l + r) / 2; @2(u=E:^  
if (l == r) MGdzrcF  
return; "M%R{pGA7  
if ((mid - l) >= THRESHOLD) D?Oe";"/  
mergeSort(data, temp, l, mid); ]4~Yi1]  
else +IZ=E >a  
insertSort(data, l, mid - l + 1); n,T &n  
if ((r - mid) > THRESHOLD) VFE@qX|  
mergeSort(data, temp, mid + 1, r); |3$E w.  
else _kKG%U.gbK  
insertSort(data, mid + 1, r - mid); Y;w|Fvjj+  
44CZl{pt  
for (i = l; i <= mid; i++) { [8ZDMe  
temp = data; jaS<*_~#R  
} oXo>pl  
for (j = 1; j <= r - mid; j++) { ~M~DH-aX  
temp[r - j + 1] = data[j + mid]; 5SFr E`  
} }G4I9Py  
int a = temp[l]; If'q8G3]-  
int b = temp[r]; }:$cK(|  
for (i = l, j = r, k = l; k <= r; k++) { ?;~!C2Zs  
if (a < b) { 2H%9l@}u  
data[k] = temp[i++]; ` w;Wud'*<  
a = temp; 14$%v;Su4  
} else { \p^V~fy7rU  
data[k] = temp[j--]; G1|1Z5r  
b = temp[j]; i0M6;W1T  
} Lf_Y4a#  
} n%Oi~7>  
} ^^q&VL  
 %:26v  
/** (Cr  
* @param data {lK2yi  
* @param l <ZT C^=3  
* @param i eP~bl   
*/ 4Kqo>|C  
private void insertSort(int[] data, int start, int len) { ]($ \7+  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Y S3~sA  
} WZa6*pF  
} -TD\?Q  
} s|IBX0^@  
} @$slGY  
]9!y3"..W{  
堆排序: SIK:0>yK"  
0E\#!L  
package org.rut.util.algorithm.support; Q#MB=:0 {  
4!sK>l!  
import org.rut.util.algorithm.SortUtil; &l6@C3N$  
av'DyNW\  
/** CU=sQfE  
* @author treeroot D5gj*/"  
* @since 2006-2-2 `%YMUBaI  
* @version 1.0 ?N4FB*x  
*/ .!q_jl%U  
public class HeapSort implements SortUtil.Sort{ coCT]<  
Kp7D I0~  
/* (non-Javadoc) Kebr>t8^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hpf0fU  
*/ ,#;hI{E  
public void sort(int[] data) { MkW=sD_  
MaxHeap h=new MaxHeap(); V7,dx@J-  
h.init(data); <F^9ML+'  
for(int i=0;i h.remove(); \Zf=A[  
System.arraycopy(h.queue,1,data,0,data.length); Byq VNz0L  
} QC'Ru'8S  
i]n2\v AG  
private static class MaxHeap{ /? %V% n  
I`{3I-E  
void init(int[] data){ xLed];2G  
this.queue=new int[data.length+1]; GR|\OJ<2  
for(int i=0;i queue[++size]=data; P!-RZEt$  
fixUp(size); b5MBzFw  
} bo<P%$(D  
} HMVP71  
h6k" D4o\  
private int size=0; -1Tr!I:1  
AL":j6!OQ  
private int[] queue; 20I`F>-*  
&G2&OFAr]q  
public int get() { )>2L(~W  
return queue[1]; n1%2 sV)>  
} a&{Y~Og?%  
%N Q mV_1  
public void remove() { (uX?XX^  
SortUtil.swap(queue,1,size--); {.Qv1oOa  
fixDown(1); 4T@+gy^.  
} a~Dk@>+P>  
file://fixdown =]%,&Se  
private void fixDown(int k) { /KvJjt'8  
int j; _1[Wv?  
while ((j = k << 1) <= size) { brp3xgQ`]  
if (j < size %26amp;%26amp; queue[j] j++; gaN/ kp  
if (queue[k]>queue[j]) file://不用交换 uD/@d'd_4L  
break; z5gVP8*z5  
SortUtil.swap(queue,j,k); ]Ea-MeH  
k = j; JDf>Qg{  
} 7:B/ ?E  
} xHt7/8wF  
private void fixUp(int k) { 4Q!A w  
while (k > 1) { m 3UK`~ji  
int j = k >> 1; \k5"&]I3  
if (queue[j]>queue[k]) {9(0s| pr  
break; -ED} 6E  
SortUtil.swap(queue,j,k); (F^R9G|  
k = j; dC,C[7\  
} 5r)8MklZ  
} R?u(aY)P  
a/ uo)']B  
} %Bw:6Y4LZ  
xc*a(v0  
} q\@_L.tc[  
&]YyV.  
SortUtil: Ck#e54gJX  
T1q27I  
package org.rut.util.algorithm; $y6 <2w%b  
U;/2\Ii  
import org.rut.util.algorithm.support.BubbleSort; QM8Ic,QFvo  
import org.rut.util.algorithm.support.HeapSort; w71YA#cg  
import org.rut.util.algorithm.support.ImprovedMergeSort; t Aq0Z)  
import org.rut.util.algorithm.support.ImprovedQuickSort; T9R# .y,  
import org.rut.util.algorithm.support.InsertSort; .K84"Gdx  
import org.rut.util.algorithm.support.MergeSort; mhVLlb Y|t  
import org.rut.util.algorithm.support.QuickSort; : %& E58  
import org.rut.util.algorithm.support.SelectionSort; -TVwoK  
import org.rut.util.algorithm.support.ShellSort; I;Mm+5A  
)Xqjl  
/**  g*a+$'  
* @author treeroot PP{ 9Y Vr  
* @since 2006-2-2 P@PF" {S  
* @version 1.0 _cvX$(Sg  
*/ |kK5:\H  
public class SortUtil { 8\68NG6o  
public final static int INSERT = 1; WP*}X7IS  
public final static int BUBBLE = 2; tx7 zG.,  
public final static int SELECTION = 3; 2*Qi4%s#  
public final static int SHELL = 4; $ (;:4  
public final static int QUICK = 5; RWv4/=}(G  
public final static int IMPROVED_QUICK = 6; cW>=/  
public final static int MERGE = 7; ef^GJTv&k  
public final static int IMPROVED_MERGE = 8; pMT7/y-  
public final static int HEAP = 9; ~bkO8tn  
7Tk//By7  
public static void sort(int[] data) { kJmwR  
sort(data, IMPROVED_QUICK); lIS`_H}  
} zHA::6OgPN  
private static String[] name={ nHm29{G0  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" l6#Y}<tq  
}; _%R^8FjH*  
7)QZ<fme  
private static Sort[] impl=new Sort[]{ Xuu&`U~%  
new InsertSort(), . .5~ x~O  
new BubbleSort(), Hk;;+'-  
new SelectionSort(), W6T4Zsg  
new ShellSort(), KO=$Hr?f;  
new QuickSort(), G+N1#0,q  
new ImprovedQuickSort(), ^85Eveu  
new MergeSort(), Soq#cl'll-  
new ImprovedMergeSort(), <qfAW?tF  
new HeapSort() %W9R08`  
}; l,lqhq\  
\{`^Q+<  
public static String toString(int algorithm){ qK7:[\T|?T  
return name[algorithm-1]; .Pj<Pe  
} !O%!A<3  
8<"g&+T  
public static void sort(int[] data, int algorithm) { ZeuL*c \  
impl[algorithm-1].sort(data); joskKik^  
} W]/J]O6  
;*Vnwt A  
public static interface Sort { qdI%v#'M  
public void sort(int[] data); _!1LV[x!s  
} ;>mM9^Jaf  
Ic4#Tk20i  
public static void swap(int[] data, int i, int j) { ?Fx~_GT  
int temp = data; hhaiH i!$  
data = data[j]; ^P@:CBO  
data[j] = temp; 'UhHcMh:  
} Fn .J tIu  
} _|["}M"?  
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