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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。 l5@k8tnz  
插入排序: 2=U4'C4#  
L;v#9^Fq  
package org.rut.util.algorithm.support; sa*hoL18  
&Wn!W  
import org.rut.util.algorithm.SortUtil; @h$7C<  
/** US Q{o  
* @author treeroot o!j? )0d  
* @since 2006-2-2 HF0J>Clq  
* @version 1.0 cZHlW|$R  
*/ 7, O_'T &  
public class InsertSort implements SortUtil.Sort{ ]C'r4Ch^  
 /h   
/* (non-Javadoc) #%E~I A%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~>qcV=F^d,  
*/ ^srx/6X  
public void sort(int[] data) { t/y0gr tm6  
int temp; WMYvE\"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); xOEj+%M  
} $)PNf'5Zg  
} EJN}$|*Av  
} 1o.]"~0:  
= [:ruE  
} t/nu/yz5E  
iXXgPapz  
冒泡排序: PY) 74sa  
9v/1>rziE  
package org.rut.util.algorithm.support; ON !1lS  
eP;lH~!.0  
import org.rut.util.algorithm.SortUtil; RX#:27:  
3ne=7Mj  
/** (Kx3:gs  
* @author treeroot   5)mn  
* @since 2006-2-2 )2:d8J\  
* @version 1.0 5 kQC  
*/ sx|=*j,_  
public class BubbleSort implements SortUtil.Sort{ ?_ p3^kl  
g9 g &]  
/* (non-Javadoc) j1>1vD-`T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T} U`?s`)  
*/ ?HU(0Vgn'  
public void sort(int[] data) { iao_w'tJ  
int temp; Y2Y/laD  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ?L7z\b"_~  
if(data[j] SortUtil.swap(data,j,j-1); q?JP\_o:  
} hXZk$a'  
} Xo$(zGb  
} ^F_c'  
} ?|{P]i?)'  
6J-tcL*4"%  
} .`iOWCS  
[_CIN  
选择排序: HjL+Wg  
.hn "NXy  
package org.rut.util.algorithm.support; [9*+s  
(LQ*U3J]_  
import org.rut.util.algorithm.SortUtil; [?_^Cy  
@#;~_?$?C  
/** = q;ACW,z  
* @author treeroot qJrK?:O;  
* @since 2006-2-2 ys09W+B7  
* @version 1.0 ~ M@8O  
*/ T+Du/ERL  
public class SelectionSort implements SortUtil.Sort { *<]ulR2  
Fb.wm   
/* F d *p3a  
* (non-Javadoc) k${25*M!3  
* {ge^&l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  O &;Cca  
*/ ,D;d#fJ  
public void sort(int[] data) { +>Y2luR1  
int temp; yP6^& 'I+  
for (int i = 0; i < data.length; i++) { REc69Y.k  
int lowIndex = i; THkg,*;:  
for (int j = data.length - 1; j > i; j--) { _-^a8F>/19  
if (data[j] < data[lowIndex]) { qgDd^0  
lowIndex = j; j%Usui<DL  
} HZ )z^K?1  
} f6u<.b  
SortUtil.swap(data,i,lowIndex); p~BEz?e  
} AwUcU;"9>  
} h 5<46!P  
RMDzPda.  
} Wi)Y9frE  
q\/ph(HF  
Shell排序: F7x]BeTM  
/Rf:Z.L  
package org.rut.util.algorithm.support; ?sk{(UN]  
0EKi?vP@y7  
import org.rut.util.algorithm.SortUtil; k`_sKr]9  
U]ynnw4  
/** }&F|u0@b  
* @author treeroot mA@FJK_  
* @since 2006-2-2 W2&o'(P\  
* @version 1.0  6g576  
*/ n#|ljC  
public class ShellSort implements SortUtil.Sort{ _<qe= hie!  
B/0Xqyu  
/* (non-Javadoc) =+DfIO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #p*D.We  
*/ +DU^"q=  
public void sort(int[] data) { [0qe ?aI  
for(int i=data.length/2;i>2;i/=2){ i}[cq_wJ  
for(int j=0;j insertSort(data,j,i); ) [+82~F  
} e#!%:M;4P  
} 3K!(/,`  
insertSort(data,0,1); S6Y2(qdP  
} T\?$7$/V  
.o8Sy2PaV  
/** 0"}J!c<g  
* @param data m Q4(<,F  
* @param j ~t^ Umx"Ew  
* @param i 1o`zAJ8|2  
*/ t-B5,,`  
private void insertSort(int[] data, int start, int inc) { \2)D  
int temp; n+MWny  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); + fS<YT  
} <-;/,uu  
} ,cE yV74  
} 4a}[&zm(5  
hz:h>Hwy  
} i' V("  
=HMa<"-8  
快速排序: M#n lKj<  
%|j`z?i|  
package org.rut.util.algorithm.support; y^Uh<L0M  
Kv0V`}<Yc  
import org.rut.util.algorithm.SortUtil; *IX<&u#  
v|\3FEu@  
/** aKjP{Z0k$  
* @author treeroot 2Pow-o*r  
* @since 2006-2-2 )G#mC0?PV  
* @version 1.0 ];xDXQd  
*/ qYoB;gp  
public class QuickSort implements SortUtil.Sort{ 1r$*8 |p  
bd]9 kRq1K  
/* (non-Javadoc) .DNPL5[v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !]5}N^X  
*/ !7Eodq-0  
public void sort(int[] data) { ;/:Sx/#s  
quickSort(data,0,data.length-1); $vrkxn  
} c+ D <  
private void quickSort(int[] data,int i,int j){ wXjidOd $  
int pivotIndex=(i+j)/2; TyDh\f!w  
file://swap =PU($  
SortUtil.swap(data,pivotIndex,j); qv& Bai[  
*5IB@^<  
int k=partition(data,i-1,j,data[j]); vd?Bk_d9k,  
SortUtil.swap(data,k,j); ])}a^]0q  
if((k-i)>1) quickSort(data,i,k-1); m??Py"1y  
if((j-k)>1) quickSort(data,k+1,j); mG"xo^1_H  
%UAF~2]g  
} FA%_jM  
/** E\|nP~;~F9  
* @param data _j+!Fd  
* @param i a`L:E'|B9  
* @param j 1U% /~  
* @return {{jV!8wK  
*/ pO_IUkt  
private int partition(int[] data, int l, int r,int pivot) { j$K*R."  
do{ GLgf%A`5/_  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); G4uG"  
SortUtil.swap(data,l,r); I`zd:o]  
} ,AmwsXN"F  
while(l SortUtil.swap(data,l,r); >`r3@|UY  
return l; Aa=:AkrH  
} AdVc1v&>  
q.p.$)  
} ,jOJ\WXP  
NMe{1RM  
改进后的快速排序: %x N${4)6  
W:,Wex^9n  
package org.rut.util.algorithm.support; ]} dQ~lOE  
om`T/@_,  
import org.rut.util.algorithm.SortUtil; D"rbQXR7$  
V"m S$MN  
/** &\1n=y  
* @author treeroot #l ZK_N|1x  
* @since 2006-2-2  =*&[K^  
* @version 1.0 (J[Xryub  
*/ GlnO8cAB  
public class ImprovedQuickSort implements SortUtil.Sort { < Hkq  
#8|LPfA  
private static int MAX_STACK_SIZE=4096; 'C/yQvJ  
private static int THRESHOLD=10; <XIIT-b[  
/* (non-Javadoc) qT48Y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Y8zTw`:V  
*/ #0>xa]S  
public void sort(int[] data) { MC* Hl`C  
int[] stack=new int[MAX_STACK_SIZE]; %8,$ILN  
g:>'+(H;  
int top=-1; &E_a0*)e  
int pivot; 0^lWy+  
int pivotIndex,l,r; tO&ffZP8$  
v8)"skVnFG  
stack[++top]=0; CuWJai:nQ;  
stack[++top]=data.length-1; fC[za,PXaE  
EHk\Q\  
while(top>0){ HR}O:2'  
int j=stack[top--]; N ~{N Nf Y  
int i=stack[top--]; lG}#K^q  
B1V{3  
pivotIndex=(i+j)/2; -}#HaL#'K  
pivot=data[pivotIndex]; hbJ>GSoZ,  
z5kAf~A  
SortUtil.swap(data,pivotIndex,j); $iu[-my_  
nN\H'{Wzd  
file://partition {%f{U"m  
l=i-1; KNUK]i&L  
r=j; m[^lu1\wn  
do{ qOwql(vX  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); <eoie6@3  
SortUtil.swap(data,l,r); |^6{3a  
} EU$.{C_O(  
while(l SortUtil.swap(data,l,r); ^U }k   
SortUtil.swap(data,l,j); t:2v`uk  
z3Q&O$5\  
if((l-i)>THRESHOLD){ .\n` 4A1z  
stack[++top]=i; +n)n6} S  
stack[++top]=l-1; "2l`XH  
} @1MnJP  
if((j-l)>THRESHOLD){ )S caT1I  
stack[++top]=l+1; p+;& Gg54  
stack[++top]=j; %{@Q7  
} FQ]/c#J  
zaqX};b  
} xG9Sk  
file://new InsertSort().sort(data); >?, Zn  
insertSort(data); ;]u9o}[ 2  
} VPe0\?!d  
/** {FNkPX  
* @param data ?, S/>SP  
*/ rm iOeS`:  
private void insertSort(int[] data) { =~B"8@B  
int temp; CMXF[X)%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K#0TD( "  
} aQCu3T  
} ieFl4hh[G  
} 8]ZzO(=@{  
.T| }rB<c  
} 0zaK&]oY0  
=dmr ,WE  
归并排序: T5(S2^)o  
*m~-8_ >;  
package org.rut.util.algorithm.support; Vw;Z0_C  
[_,as  
import org.rut.util.algorithm.SortUtil; ~HZdIPcC  
aD^$v  
/** n HseA  
* @author treeroot 3v/B*M VI  
* @since 2006-2-2 OT9]{|7  
* @version 1.0 rtV`Q[E  
*/ K~N$s "Qx  
public class MergeSort implements SortUtil.Sort{ &mwd0%4  
E/P~HE{  
/* (non-Javadoc) .ZpOYhk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i%hCV o  
*/ ?sf<cFF  
public void sort(int[] data) { 1E+12{~m"i  
int[] temp=new int[data.length]; g !'R}y  
mergeSort(data,temp,0,data.length-1); >|$]=e,Z  
} $[ {5+*  
g7\ =  
private void mergeSort(int[] data,int[] temp,int l,int r){ mdj%zJ8/  
int mid=(l+r)/2; }LzBo\  
if(l==r) return ; JVZ-nHf(9  
mergeSort(data,temp,l,mid); ,_2-Op  
mergeSort(data,temp,mid+1,r); T5S4,.o9W  
for(int i=l;i<=r;i++){  {>]\<  
temp=data; B5b:znW2@  
} %6UF%dbYH`  
int i1=l; h>-P/  
int i2=mid+1; TNX9Z)=>g  
for(int cur=l;cur<=r;cur++){ I;(3)^QH#  
if(i1==mid+1) at: li  
data[cur]=temp[i2++]; 3S^0%"fY  
else if(i2>r) #B `?}a=  
data[cur]=temp[i1++]; ;_o]$hV|  
else if(temp[i1] data[cur]=temp[i1++];  is'V%q  
else qt/K$'  
data[cur]=temp[i2++]; "-J 5!y*,Y  
} 4&/CES  
} E+f)Zg :  
]Bhy  =1  
} oBzl=N3<  
uDf<D.+5Ze  
改进后的归并排序: #Y'eS'lv4  
j(;^XO Y#  
package org.rut.util.algorithm.support; ,,H"?VO  
:|S zD4Ag  
import org.rut.util.algorithm.SortUtil; !?2)a pM  
8>Cr6m   
/** K\Ea\b[  
* @author treeroot 8y;Rw#Dz  
* @since 2006-2-2 ]c.w+<  
* @version 1.0 wQ}r/2n|^  
*/ _P>YG<*"kQ  
public class ImprovedMergeSort implements SortUtil.Sort { #[93$)Gd!  
8bIP"!=*W  
private static final int THRESHOLD = 10; i5,iJe0cA  
).T&fa"  
/* -%nD'qy,.  
* (non-Javadoc) 18X@0e  
* g3R(,IH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^Q6J$"Tj  
*/ N]<(cG&p  
public void sort(int[] data) { vQAFgG  
int[] temp=new int[data.length]; 5KCB^`|b>t  
mergeSort(data,temp,0,data.length-1); nxLuzf4U5  
} !X>u.}?g  
odRiCiMH  
private void mergeSort(int[] data, int[] temp, int l, int r) { 6Rc=!_v^  
int i, j, k; !jCgTo y  
int mid = (l + r) / 2; i?00!t  
if (l == r) v+c>iI  
return; d2k-MZuT6  
if ((mid - l) >= THRESHOLD) %uW  =kr  
mergeSort(data, temp, l, mid); gP^2GnjHL8  
else 3DU1c?M:  
insertSort(data, l, mid - l + 1); r*X,]\V0x  
if ((r - mid) > THRESHOLD)  Z>[7#;;  
mergeSort(data, temp, mid + 1, r); &Y@i:O  
else }X(&QZ7i`  
insertSort(data, mid + 1, r - mid); 7Cgi&  
^^y eC|~N:  
for (i = l; i <= mid; i++) { fgLjF,Y  
temp = data; / 3A6xPOg  
} *Gsj pNr-  
for (j = 1; j <= r - mid; j++) { +y7z>Fwl  
temp[r - j + 1] = data[j + mid]; ua\t5M5  
} kaG/8G(  
int a = temp[l]; BZR{}Aj4pa  
int b = temp[r]; 0[;2dc  
for (i = l, j = r, k = l; k <= r; k++) { X>q`F;W  
if (a < b) { ;KeU f(tH  
data[k] = temp[i++]; ]hl*6  
a = temp; 12$0-@U  
} else { >)><u4}  
data[k] = temp[j--]; _)A|JC!jId  
b = temp[j]; 8tY>%A~^z  
} 7& M-^Ev  
} SI(f&T(  
} | ,8z" g  
|s8N  
/** M`MxdwR  
* @param data c-LzluWi  
* @param l N& _~y|  
* @param i Ni$'# W?t  
*/ Epzg|L1)  
private void insertSort(int[] data, int start, int len) { f?3-C8 hU  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); NOb`)qb  
} "oP^2|${  
} z;OYPGvkw  
} !avol/*  
} +WX/4_STV  
}gp@0ri%5  
堆排序: B(Sy.n  
[&x9<f6  
package org.rut.util.algorithm.support; 2q f|+[X  
MP]<m7669*  
import org.rut.util.algorithm.SortUtil; j3-YZKpg  
`Sod]bO +U  
/** 4u{S?Ryy  
* @author treeroot Y&|Z*s+ +}  
* @since 2006-2-2 m5Bf<E,c  
* @version 1.0 b R\7j+*&  
*/ XS<>0YM  
public class HeapSort implements SortUtil.Sort{ $vn6%M[  
3JazQU  
/* (non-Javadoc) 2e48L677-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) d;i|s[6ds`  
*/ A5l Cc b  
public void sort(int[] data) { 7ZcF0h  
MaxHeap h=new MaxHeap(); ycA<l"  
h.init(data); PKm|?kn{0(  
for(int i=0;i h.remove(); $l.*;h*  
System.arraycopy(h.queue,1,data,0,data.length); qwTz7r  
} i~B?p[  
8}/DD^M  
private static class MaxHeap{ 0G%9 @^B  
s!6lZ mPM  
void init(int[] data){ n#_B4UqW%  
this.queue=new int[data.length+1]; u{1R=ML  
for(int i=0;i queue[++size]=data; Ky3mz w|  
fixUp(size); 2& Q\W  
} lu utyK!  
} qF)J#$4;6  
u?').c4  
private int size=0; awLvLkQb{  
a~o <>H  
private int[] queue; XF`2*:7  
P^Hgm  
public int get() { +Y;P*U}Qg[  
return queue[1]; Mz+I YP`L  
} h>Kx  
1" '3/MFQ8  
public void remove() { Ple.fKu  
SortUtil.swap(queue,1,size--); n ]%2Kx  
fixDown(1); !$I~3_c  
} 5epI'D  
file://fixdown a@}.96lStD  
private void fixDown(int k) { iTxWXij  
int j; SmXJQ@jN  
while ((j = k << 1) <= size) { 7?lz$.*Avp  
if (j < size %26amp;%26amp; queue[j] j++; Bk8}K=%w  
if (queue[k]>queue[j]) file://不用交换 <JPN< Kv  
break; cXweg;  
SortUtil.swap(queue,j,k); ,05PYBc3  
k = j; "1o{mvCkR  
} 7lC$UQx8  
} !z?   
private void fixUp(int k) { MGdzrcF  
while (k > 1) { "M%R{pGA7  
int j = k >> 1; 8t+eu O  
if (queue[j]>queue[k]) ]4~Yi1]  
break; +IZ=E >a  
SortUtil.swap(queue,j,k); VZ]iep  
k = j; D]]e6gF$e  
} zCs34=3 D[  
} HcRw9,I'  
dCx63rF`G  
} uYW4$6S 3  
&1 \/B  
} ,GOIg|51  
rFzNdiY  
SortUtil: W]4Z4&  
Jv~R/qaaD  
package org.rut.util.algorithm; +%5L2/n7  
<H64L*,5'7  
import org.rut.util.algorithm.support.BubbleSort; :8S;34Y;  
import org.rut.util.algorithm.support.HeapSort; 74e=zW?  
import org.rut.util.algorithm.support.ImprovedMergeSort; b42%^E  
import org.rut.util.algorithm.support.ImprovedQuickSort; hB [bth  
import org.rut.util.algorithm.support.InsertSort; vNi;)"&*  
import org.rut.util.algorithm.support.MergeSort; ^}  {r@F  
import org.rut.util.algorithm.support.QuickSort; *F$@!ByV  
import org.rut.util.algorithm.support.SelectionSort; TE`5i~R*  
import org.rut.util.algorithm.support.ShellSort; s,R:D).  
T CT8OU|  
/** 74^v('-2  
* @author treeroot Iv6 lE:)  
* @since 2006-2-2 FDo PW~+[  
* @version 1.0 txEN7!  
*/ b'4a;k!rS  
public class SortUtil { @&T' h}|:  
public final static int INSERT = 1; {7y;s  
public final static int BUBBLE = 2; \g0vzo"u  
public final static int SELECTION = 3; [^!SkQ  
public final static int SHELL = 4; S5>s&  
public final static int QUICK = 5; !~ o%KQt  
public final static int IMPROVED_QUICK = 6; [$3+5K#  
public final static int MERGE = 7; 2V~E <K-  
public final static int IMPROVED_MERGE = 8; UfW=/T  
public final static int HEAP = 9; ]9!y3"..W{  
SIK:0>yK"  
public static void sort(int[] data) { 0E\#!L  
sort(data, IMPROVED_QUICK); 7_~sa{1R.  
}  O_ _s~  
private static String[] name={ Mi]^wCF  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" (KI9j7  
}; K6{wM  
#1dVp!?3T  
private static Sort[] impl=new Sort[]{ tSy 9v  
new InsertSort(), |JkfAnrN$I  
new BubbleSort(), %9YY \a {  
new SelectionSort(), "#)|WVa=BM  
new ShellSort(), /xX7:U b  
new QuickSort(), f@}> :x  
new ImprovedQuickSort(), f y2vAwl  
new MergeSort(), w|dfl *  
new ImprovedMergeSort(), +~n:*\  
new HeapSort() 9]Jv >_W*  
}; e&sH<hWR  
<F^9ML+'  
public static String toString(int algorithm){ \Zf=A[  
return name[algorithm-1]; Byq VNz0L  
} QC'Ru'8S  
i]n2\v AG  
public static void sort(int[] data, int algorithm) { cGm3LS6]*  
impl[algorithm-1].sort(data); I`{3I-E  
} xLed];2G  
%P}H3;2  
public static interface Sort { %OoH<\w w  
public void sort(int[] data); kA=5Kc  
} kq| !{_  
HMVP71  
public static void swap(int[] data, int i, int j) { yjT>bu]  
int temp = data; DN:| s+Lz  
data = data[j]; {Q>OZm\+  
data[j] = temp; A=kOSq 4Q  
} Cab-:2L]  
} 1$RJzHS  
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