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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。 l)2HHu<  
插入排序: Ve')LY<  
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package org.rut.util.algorithm.support; P"[l86:  
zrWq!F*-V\  
import org.rut.util.algorithm.SortUtil; Uzm[e%/`  
/** )x5$io   
* @author treeroot lFzQG:k@  
* @since 2006-2-2 3IRRFIiO  
* @version 1.0 8P'En+uE1|  
*/ FK/ro91L  
public class InsertSort implements SortUtil.Sort{ vX!dMJa0  
1Tts3O .  
/* (non-Javadoc) U_=wL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n=Z[w5  
*/ CgPZvB[  
public void sort(int[] data) { 5i wikC=y  
int temp; -qnXa  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 71.:p,Z@z  
} \?Oly171  
} 'KIi!pA.  
} 4jZi62  
\!4ghev3  
} ?yd(er<_f  
|4 d{X@`&  
冒泡排序: Ozh^Q$>u  
bC,M&<N  
package org.rut.util.algorithm.support; >?uH#%C5  
@a7(*<".  
import org.rut.util.algorithm.SortUtil; K:Xrfn{s  
x4 A TK  
/** qS[p|*BL  
* @author treeroot Qe=Q8cT  
* @since 2006-2-2 n3@g{4~  
* @version 1.0 (B~V:Yt  
*/ >t6'8g"T  
public class BubbleSort implements SortUtil.Sort{ 7;#dX~>@{  
W:N"O\`{m  
/* (non-Javadoc) zI*/u)48  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K]=>F  
*/ t+TbCe  
public void sort(int[] data) { &#EVE xL  
int temp; :Y)kKq d  
for(int i=0;i for(int j=data.length-1;j>i;j--){ =Q8^@i4[&D  
if(data[j] SortUtil.swap(data,j,j-1); c 6}xnH  
} L)//- k9  
} +#*z"a`  
} "x)pp  
} ,Elga}7u  
\~1zAiSd>#  
} K Lv  
"1j\ZCXK_Z  
选择排序: )9sr,3w  
*R~(:z>>  
package org.rut.util.algorithm.support; K+TTYQ  
JNz"lTt>[g  
import org.rut.util.algorithm.SortUtil; {II7%\ya  
ez<wEt S  
/** %A[p!U  
* @author treeroot NbK?Dg8WJG  
* @since 2006-2-2 cX]{RVZo-/  
* @version 1.0 Q)|LiCR,  
*/ Wg;TXs/  
public class SelectionSort implements SortUtil.Sort { $vicHuX!  
pQ2)M8 gf  
/* b42pLbpe'E  
* (non-Javadoc) 7!840 :a?+  
* QbKYB  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aw@Aoq  
*/ UDi3dH=  
public void sort(int[] data) { rM?Dp2  
int temp; m$UT4,Ol  
for (int i = 0; i < data.length; i++) { _"t.1+-K  
int lowIndex = i; %TggNU,  
for (int j = data.length - 1; j > i; j--) { R*5;J`TW  
if (data[j] < data[lowIndex]) { 0tL/:zID  
lowIndex = j; ?b''  
} h.+&=s!Nsy  
} u0H`%m  
SortUtil.swap(data,i,lowIndex); ^~IcQ!j/5  
} E@}j}/%'O  
} _!g NF=  
<TROs!x$a  
} u~T$F/]k>  
H;!hp0y  
Shell排序: u2\qg;dP  
Fea\ eB  
package org.rut.util.algorithm.support; \ A UtGP  
c\rbLr}l)  
import org.rut.util.algorithm.SortUtil; 5pyvs;As  
<cOE6;d#  
/** uV:uXQni``  
* @author treeroot Pds*M?&F  
* @since 2006-2-2 4qXUk:C@m  
* @version 1.0 r[4F?W  
*/ 9: |K]y  
public class ShellSort implements SortUtil.Sort{ z4`n%~w1b  
KX}dn:;(3  
/* (non-Javadoc) ok _{8z\#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xR6IXF>*  
*/ uU !i`8  
public void sort(int[] data) { ={0{X9t?'j  
for(int i=data.length/2;i>2;i/=2){ A;nmua-Fv  
for(int j=0;j insertSort(data,j,i); p. ~jo  
} # i=^WN<V  
} nMvIL2:3  
insertSort(data,0,1); B148wh#r  
} |.8=gS5  
KKXb,/  
/** |]3);^0  
* @param data -6Si  
* @param j 10a*7 L  
* @param i @Lv_\^2/}  
*/ } $c($  
private void insertSort(int[] data, int start, int inc) { >f05+%^[  
int temp; pXlBKJmW  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ` i^1U O  
} _~q^YZ  
} \$|UFx  
} _qo1 GM&  
eQIi}\`  
} :DpK{$eCb  
Ph_m'fbf  
快速排序: /;$ew~}  
9)hC,)5  
package org.rut.util.algorithm.support; * rANf&y  
g]Ny?61  
import org.rut.util.algorithm.SortUtil; 3VB V_/i;  
)_.H #|r  
/** bUB6B  
* @author treeroot rAdcMFW  
* @since 2006-2-2 pr89zkYw  
* @version 1.0 '^Np<  
*/ 5|t&qUV  
public class QuickSort implements SortUtil.Sort{ m D q,,  
W >IKy#  
/* (non-Javadoc) Ri0+nJ6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ({b/J0 <@D  
*/ rz7b%WY  
public void sort(int[] data) { gb#wrI  
quickSort(data,0,data.length-1); LKY Q?  
} J(VZa_  
private void quickSort(int[] data,int i,int j){ AG0x)  
int pivotIndex=(i+j)/2; *Yjs$'_2  
file://swap NdQ?3'WJ  
SortUtil.swap(data,pivotIndex,j); jC8BLyGE_  
^Wz{su2  
int k=partition(data,i-1,j,data[j]); yYtki  
SortUtil.swap(data,k,j); 'Em($A (  
if((k-i)>1) quickSort(data,i,k-1); Di=6.gm[<  
if((j-k)>1) quickSort(data,k+1,j);  )U`kU`+'  
Tj+WO6#V  
} w2V E_  
/** n_2 LkW<?  
* @param data $&C%C\(>D  
* @param i @V u[Tg}J  
* @param j `<Nc Y*  
* @return x;aZ&  
*/ ;<rJ,X#  
private int partition(int[] data, int l, int r,int pivot) { h*%1Jkxu  
do{ k_`S[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); o#b9M4O  
SortUtil.swap(data,l,r); y +vcBuX  
} 5toNEDN  
while(l SortUtil.swap(data,l,r); 46`{mPd{aO  
return l; a]ey..m  
} (dZ&Af  
gI{F"7fa=  
} `-2`UGB-  
zg"ZXZ  
改进后的快速排序: akwVU\RP  
ArM e[t0$  
package org.rut.util.algorithm.support; z [{%.kA  
@@&;gWr;  
import org.rut.util.algorithm.SortUtil; $6Psq=|  
Hc!_o`[{l  
/** h|Qh/jCX  
* @author treeroot )[.URp&  
* @since 2006-2-2 |zlwPi.  
* @version 1.0 9r}} m0  
*/ b5C #xxIO  
public class ImprovedQuickSort implements SortUtil.Sort { c5u?\  
=p:6u_@XWj  
private static int MAX_STACK_SIZE=4096; dksnW!  
private static int THRESHOLD=10; sS|5x  
/* (non-Javadoc) $^F2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SOJHw6  
*/ Pr'py  
public void sort(int[] data) { Rk^&ras_  
int[] stack=new int[MAX_STACK_SIZE]; 5#tvc4+)  
#,C{?0!  
int top=-1; SM?<woY=*  
int pivot; d7Z\  
int pivotIndex,l,r; %/p5C  
K;O\Pd  
stack[++top]=0; ps [rYy  
stack[++top]=data.length-1; qr1^i1%\  
V#Eq74ic  
while(top>0){ 0jMrL\>C  
int j=stack[top--]; DoA f,9|_  
int i=stack[top--]; aQuENsB  
-#h \8Xl  
pivotIndex=(i+j)/2; eS M!_2  
pivot=data[pivotIndex]; n$9!G  
kQtl&{;k?  
SortUtil.swap(data,pivotIndex,j); F u)7J4Z  
J<D =\  
file://partition 3@SfCG&|e  
l=i-1; -lHJ\=  
r=j; |RdSrVB  
do{ 2*N# %ZUX  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); TDFv\y}yc  
SortUtil.swap(data,l,r); B Xp3u|t  
} J2-xnUa]7  
while(l SortUtil.swap(data,l,r); 6 AY%o nY  
SortUtil.swap(data,l,j); L'(^[vR(  
D!CGbP(  
if((l-i)>THRESHOLD){ OXo-(HLE  
stack[++top]=i; @g{ " E6  
stack[++top]=l-1; 1Y_fX  
} .x&>H  
if((j-l)>THRESHOLD){ dpS  
stack[++top]=l+1; wP'`!O[W  
stack[++top]=j; gxiJ`. D=  
} N|; cG[W  
riz({  
} IdM ;N  
file://new InsertSort().sort(data); \% (R~ H  
insertSort(data); 94+#6jd e  
} ??4QDa-  
/** "o`( kYSF  
* @param data YV9%^ZaN7  
*/ }v?{npEOt+  
private void insertSort(int[] data) { h6#  
int temp; c?|/c9f  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @<P [z[  
} $JOIK9+3z#  
} ;:cM^LJ  
} hd900LA}  
8w$cj'  
} z&eJ?wb  
jU=)4nx  
归并排序: FU<rE&X2:  
}I]9I _S  
package org.rut.util.algorithm.support; ][.1b@)qV  
3Xy>kG}  
import org.rut.util.algorithm.SortUtil; Jv5G:M5+~  
E3'6lv'  
/** >DDQ7 l  
* @author treeroot fK[9<"PC0  
* @since 2006-2-2 ;9rQN3J$gn  
* @version 1.0 k[][Md2Vh  
*/ `g#\ Ws  
public class MergeSort implements SortUtil.Sort{ E:7vm@+  
dJkT Hmw  
/* (non-Javadoc) :=* -x  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V[% r5!83H  
*/ R,(^fM  
public void sort(int[] data) { !R-UL#w9W'  
int[] temp=new int[data.length]; <1ai0]  
mergeSort(data,temp,0,data.length-1); HtMlSgx,8>  
} Z"P{/~HG  
@9^kl$  
private void mergeSort(int[] data,int[] temp,int l,int r){ v<O\ l~S  
int mid=(l+r)/2; <ioX|.7ZX  
if(l==r) return ; &#WTXTr0=  
mergeSort(data,temp,l,mid); n_5g:`Y  
mergeSort(data,temp,mid+1,r); tZ(Wh  
for(int i=l;i<=r;i++){ ivt\| >  
temp=data; !-: a`Vs+  
} f+d{^-  
int i1=l; X;-,3dy  
int i2=mid+1; a].Bn#AH!C  
for(int cur=l;cur<=r;cur++){ ]UMwpL&rY  
if(i1==mid+1) Od"-w<'  
data[cur]=temp[i2++]; #GTmC|[  
else if(i2>r) r/PsFv{8  
data[cur]=temp[i1++]; n^'{{@&(v  
else if(temp[i1] data[cur]=temp[i1++]; NKd):>d%  
else 9[:nW p^  
data[cur]=temp[i2++]; /wmJMX  
} 9t=erhUr  
} kG%<5QH  
4*'NpqC(_  
} <>-UPRw qI  
-i 9/1.Z  
改进后的归并排序: )p&xpB(  
]J~5{srq:  
package org.rut.util.algorithm.support; U9Y'eP.2  
u+{5c5_  
import org.rut.util.algorithm.SortUtil; ]SK(cfA`  
DK:d'zb  
/** lk8VJ~2d  
* @author treeroot YTY0N5["  
* @since 2006-2-2 h1,J<B@  
* @version 1.0 i`E]gJ$  
*/ F|V?Z  
public class ImprovedMergeSort implements SortUtil.Sort { t#kmtJC  
kQ|}"Tw7  
private static final int THRESHOLD = 10; |s|RJA1  
X~lOFH;}q  
/* sW[42A  
* (non-Javadoc) MTr _8tI  
* b%AYYk)d?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) X!r!lW  
*/ enZW2o97c  
public void sort(int[] data) { ${`\In_?O  
int[] temp=new int[data.length]; XxV]U{i!  
mergeSort(data,temp,0,data.length-1); qbB.Z#w  
} >GqIpfn  
d ;ry!X  
private void mergeSort(int[] data, int[] temp, int l, int r) { u K 8 r  
int i, j, k; .2OP>:9F  
int mid = (l + r) / 2; NJn~XCq  
if (l == r) gJ2R(YMF  
return; RL($h4d9  
if ((mid - l) >= THRESHOLD) G$ipWi  
mergeSort(data, temp, l, mid); )5&Wt@7Kj`  
else CKj3-rcF(  
insertSort(data, l, mid - l + 1); InRn!~_N  
if ((r - mid) > THRESHOLD) (Iu5QLE  
mergeSort(data, temp, mid + 1, r); P^+Og_$  
else *,mbZE=<  
insertSort(data, mid + 1, r - mid); \}Hk`n)Aq  
b@nbXm]Z  
for (i = l; i <= mid; i++) { S&@~F|  
temp = data; 6jom6/F 4  
} B,}%1+*  
for (j = 1; j <= r - mid; j++) { {?,:M  
temp[r - j + 1] = data[j + mid]; (gz|6N  
} ~bvx<:8*%  
int a = temp[l]; vw3%u+Z&  
int b = temp[r]; B f[D&O  
for (i = l, j = r, k = l; k <= r; k++) { GMd81@7  
if (a < b) { O=ci"2!\-  
data[k] = temp[i++]; M=@U]1n*c  
a = temp; ==Ju2D?%  
} else { f'*HP%+Y  
data[k] = temp[j--]; >[ywrB ?T  
b = temp[j]; PL wa!j  
} ?DM-C5$  
} fFMG9]*  
} <[b\V+M  
+HUI1@ql  
/** (,HA Os  
* @param data }?"f#bI  
* @param l Dr<%Lr  
* @param i 90M:0SH  
*/ ]oZ$,2#;~  
private void insertSort(int[] data, int start, int len) { ePB=aCZ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); e(j"u;=  
} iQS?LksQX  
} h (jg7R  
} %/s:G)  
} Onby=Y o6  
DH @*Oz-  
堆排序: L<J%IlcfO  
Z5_MSPm  
package org.rut.util.algorithm.support; >L)Xyq  
v||8Q\d  
import org.rut.util.algorithm.SortUtil; (eG#JVsm9  
[K%J t  
/** [JsQ/|=z  
* @author treeroot lLo FM  
* @since 2006-2-2 uflp4_D   
* @version 1.0 2= u5N[*  
*/ 4d[:{/+Q  
public class HeapSort implements SortUtil.Sort{ h?fv:^vSi  
i5V ly'Q  
/* (non-Javadoc) Pqx=j_st  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8%I4jL<  
*/ 7S),:Uy[\  
public void sort(int[] data) { RVX-3FvP  
MaxHeap h=new MaxHeap(); ;w[|IRa  
h.init(data); T3Qa[>+\  
for(int i=0;i h.remove(); B3e{'14  
System.arraycopy(h.queue,1,data,0,data.length); %q(n'^#Z.y  
} LR'F/.Dx  
5=5~GX-kr  
private static class MaxHeap{ MhHygZT[}  
&&TQ0w&T  
void init(int[] data){ ad }^Dj/  
this.queue=new int[data.length+1]; b[VP"KZ?  
for(int i=0;i queue[++size]=data; .,UpI|b  
fixUp(size); rEz=\yY^j'  
} B4_0+K H  
} X|@|ZRN  
&nTB^MF  
private int size=0; *_3+ DF  
KGzBK:  
private int[] queue; y~Sh|2x8v  
.,<-lMC+  
public int get() { ;g7 nG{  
return queue[1]; [u=b[(  
} 5k<qJ9  
Yc+ /="&z  
public void remove() { Mryi6XT  
SortUtil.swap(queue,1,size--); i{!i %`"  
fixDown(1); \} P}H  
} OT\[qaK  
file://fixdown r4D6g>)h1q  
private void fixDown(int k) { l^WFMeMD3a  
int j; , B h[jb`y  
while ((j = k << 1) <= size) { )# M*@e$k  
if (j < size %26amp;%26amp; queue[j] j++; @tRq(*(/:  
if (queue[k]>queue[j]) file://不用交换 2U)H2 %  
break; 66Huqo  
SortUtil.swap(queue,j,k); R/A40i  
k = j; ?:~Y%4;  
} Skq%S`1%Q  
} Ri"3o  
private void fixUp(int k) { z9u"?vdA  
while (k > 1) { XM>ByfD{  
int j = k >> 1; \<]nv}1O  
if (queue[j]>queue[k]) hA/K>Z  
break; LH3PgGi,  
SortUtil.swap(queue,j,k); _Z@- q  
k = j; 0ppZ~}&  
} #p6#,PZ  
} 5<Xq7|Jt  
a&M{y  
} Oy&Myjny<  
IH'DCY:  
} "#qyX[\  
9^c\$"2B  
SortUtil: 39BGwKXb  
khyn4   
package org.rut.util.algorithm; w<tr<Pu'  
-{-w5_B$  
import org.rut.util.algorithm.support.BubbleSort; `$fwLC3j  
import org.rut.util.algorithm.support.HeapSort; <pK72  
import org.rut.util.algorithm.support.ImprovedMergeSort; k#w[G L|T  
import org.rut.util.algorithm.support.ImprovedQuickSort; 3;>|*(cO  
import org.rut.util.algorithm.support.InsertSort; Kisd.~u8j  
import org.rut.util.algorithm.support.MergeSort; I.euuzBgA  
import org.rut.util.algorithm.support.QuickSort; Wu,'S;>C  
import org.rut.util.algorithm.support.SelectionSort; bH~ue5q  
import org.rut.util.algorithm.support.ShellSort; qR--lvO  
7fgA)dU:K  
/** wMT?p/9Blm  
* @author treeroot OGzth$7A  
* @since 2006-2-2 A|O7W|"W  
* @version 1.0 x{6/di  
*/ }2|>Y[v2j  
public class SortUtil { rH8w||S2U  
public final static int INSERT = 1; W]4Gs;  
public final static int BUBBLE = 2; 3<AZ,gF1  
public final static int SELECTION = 3; 9pb4!=g*  
public final static int SHELL = 4; % tN{  
public final static int QUICK = 5; ez"Xb 7  
public final static int IMPROVED_QUICK = 6; Z1wN+Y.CA  
public final static int MERGE = 7; ;%"UZ~]f  
public final static int IMPROVED_MERGE = 8; o=X6PoJ N_  
public final static int HEAP = 9; {]n5h#c 5*  
@K7#}7,t  
public static void sort(int[] data) { ^EPM~cEY\  
sort(data, IMPROVED_QUICK); p%jl-CC1  
} 7^ A;.x  
private static String[] name={ Bq#?g@V  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" weEmUw Z  
}; %}MZWf{  
x24  
private static Sort[] impl=new Sort[]{ .>Gq/[c0|  
new InsertSort(), AhZ8B'Ee  
new BubbleSort(), l(-6pP5`  
new SelectionSort(), k+f!)7_  
new ShellSort(), :[ F`tDL  
new QuickSort(), S>Z V8  
new ImprovedQuickSort(), Ysz{~E'  
new MergeSort(), )3V5P%Q  
new ImprovedMergeSort(), HcXyU/>D  
new HeapSort() FYFP 6ti  
}; \H!E CTI  
hyH"  
public static String toString(int algorithm){ n\Uh5P1W"  
return name[algorithm-1]; ):   
} #joGIw  
ZqsI\"bj  
public static void sort(int[] data, int algorithm) { CLg;  
impl[algorithm-1].sort(data); >?ZH[A  
} vd c k  
3)^-A4~E  
public static interface Sort {  {.GC7dx  
public void sort(int[] data); )@DH&  
} rDX_$,3L  
Z$ {I 4a  
public static void swap(int[] data, int i, int j) { .cdm@_Ls  
int temp = data; OW<i"?0  
data = data[j]; k6_RJ8I  
data[j] = temp; HeZ! "^w  
} }#ZQ\[  
} %3M(!X:[  
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