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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。 Z0F~?  
插入排序: 0cd_l 2f#g  
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package org.rut.util.algorithm.support; 9} (w*>_L  
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import org.rut.util.algorithm.SortUtil; eTiTS*`u  
/** 2cR[~\_9.  
* @author treeroot GJ+^t  
* @since 2006-2-2 hH %>  
* @version 1.0 8xAV[i  
*/ EB~]6.1  
public class InsertSort implements SortUtil.Sort{ /wV|;D^ )  
F (*B1J2_g  
/* (non-Javadoc) Ri.tA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) t`Kbm''d[  
*/ %rzPh<>e  
public void sort(int[] data) { b/wpk~qi  
int temp; b 7UJ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A,}M ^$@  
} T] zEcx+e  
} #b/qR^2qW  
} (}: s[cs  
5E]t4"  
} XLN bV?  
D(!^$9e9b  
冒泡排序: ;_o]$hV|  
oQ$yr^M  
package org.rut.util.algorithm.support; Lc3&\q e  
v pI9TG  
import org.rut.util.algorithm.SortUtil; d#k(>+%=Q  
!wAT`0<94F  
/** j(;^XO Y#  
* @author treeroot dbI>\khI  
* @since 2006-2-2 OQVrg2A%(  
* @version 1.0 h>N}M}8  
*/ GG} %  
public class BubbleSort implements SortUtil.Sort{ __=H"UhWv  
C?PQ>Q!f-  
/* (non-Javadoc) C|'DKT4M&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ([>ecS@eO  
*/ hXW` n*Zw  
public void sort(int[] data) { /%wS5IZ^  
int temp; |Splbs k  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %opBJ   
if(data[j] SortUtil.swap(data,j,j-1); xoaO=7\io  
} +$2{u_m,  
} S;|:ci<[=  
} /jbAf]"F;  
} ?t#wK}d.  
?#xl3Z ;I  
} sX>u.  
9d(\/ 7  
选择排序: h^M_yz-f  
 bGRt  
package org.rut.util.algorithm.support; qQ@| Cj  
9U8M|W|d  
import org.rut.util.algorithm.SortUtil; S,Y|;p<+^  
c}(WniR-"  
/** *@U{[J  
* @author treeroot hHs/Qtq  
* @since 2006-2-2 #6`5-5Ks;  
* @version 1.0 P3M$&::D-  
*/ 6{Wo5O{!\  
public class SelectionSort implements SortUtil.Sort { f :c'j`  
8|u4xf<  
/* Z;BS@e  
* (non-Javadoc) |P|B"I<?  
* Bo 35L:r|  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L@}PW)#  
*/ 7)66e  
public void sort(int[] data) { 0-2|(9 Kc  
int temp; b}e1JPk}!  
for (int i = 0; i < data.length; i++) { jHLs 5%  
int lowIndex = i; D=tZ}_'{t  
for (int j = data.length - 1; j > i; j--) { &quY^j  
if (data[j] < data[lowIndex]) { 4aW@c<-r?  
lowIndex = j; m[hL GD'Fi  
} %!aU{E|@_  
} oA1_W).wJ  
SortUtil.swap(data,i,lowIndex); TP }a9-9?  
} fi+}hGj(r  
} .[|UNg  
SZykG[  
} iD^,O)b  
Jt~Ivn,  
Shell排序: hI[} -  
&2'-v@kK  
package org.rut.util.algorithm.support; tvkdNMyX%9  
&|v)   
import org.rut.util.algorithm.SortUtil; p/H.bG!z  
<p@Cx  
/** @d75X YKu  
* @author treeroot |tXA$}"L8  
* @since 2006-2-2 4l D$'`  
* @version 1.0  q+P@2FL  
*/ .)Tj}Im2p  
public class ShellSort implements SortUtil.Sort{ q"2QNF'  
v.0qE}' |  
/* (non-Javadoc) MKK ^-T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g \mE  
*/ N0`9/lr|  
public void sort(int[] data) { [Nyt0l "z  
for(int i=data.length/2;i>2;i/=2){ $d?+\r:I{,  
for(int j=0;j insertSort(data,j,i); 6].[z+  
} MP]<m7669*  
} =BJLj0=N  
insertSort(data,0,1); %sa?/pjK  
} j"W>fC/u  
+UzQJt/>>  
/** W4^L_p>Tm^  
* @param data i'tMpS3  
* @param j AtT7~cVe  
* @param i JsEJ6!1  
*/ Qg>NJ\*Q  
private void insertSort(int[] data, int start, int inc) { rd <m:r  
int temp; w5FIHYl6B  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); A5l Cc b  
} 7ZcF0h  
} ycA<l"  
} PKm|?kn{0(  
$l.*;h*  
} qwTz7r  
r]B8\5|<d  
快速排序: 2y [Q  
| dQ>)_  
package org.rut.util.algorithm.support; ;(Yb9Mr)z  
8|&,JdT  
import org.rut.util.algorithm.SortUtil; o3WOp80hz  
>w,L=z=  
/** ]8G 'R-8}  
* @author treeroot I&PJ[U#~a  
* @since 2006-2-2 VRo&1:  
* @version 1.0 Dy08.Sss  
*/ kHM Jh~  
public class QuickSort implements SortUtil.Sort{ 4.A^5J'W  
B|`?hw@g+  
/* (non-Javadoc) d0J /"<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aq,1'~8XR  
*/ r6<;bO(  
public void sort(int[] data) { ,BdObx  
quickSort(data,0,data.length-1); .1QGNW  
}  5"%.8P  
private void quickSort(int[] data,int i,int j){ gC7!cn  
int pivotIndex=(i+j)/2; MGdzrcF  
file://swap Ou[K7-m%&  
SortUtil.swap(data,pivotIndex,j); f\&X$g  
q~`hn(S  
int k=partition(data,i-1,j,data[j]); %0\@\fC41  
SortUtil.swap(data,k,j); F`=p/IAJK  
if((k-i)>1) quickSort(data,i,k-1); d<c29Y  
if((j-k)>1) quickSort(data,k+1,j); ,GOIg|51  
_{|a<Keq|  
} hY}Q|-|  
/** M1jT+  
* @param data kD#T _d  
* @param i VoCg,gow  
* @param j 'h$:~C  
* @return }i9:k kfq2  
*/ XQ1]F{?/H  
private int partition(int[] data, int l, int r,int pivot) { 18$d-[hX  
do{ H3wJ5-q(  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \p^V~fy7rU  
SortUtil.swap(data,l,r); G1|1Z5r  
} jN6V`Wh_  
while(l SortUtil.swap(data,l,r); Lf_Y4a#  
return l; n%Oi~7>  
} ^^q&VL  
 %:26v  
} (Cr  
 bPsvoG  
改进后的快速排序: zAB = >v  
.zb  
package org.rut.util.algorithm.support; q<AnWNheE  
bRo<~ rp%  
import org.rut.util.algorithm.SortUtil; 7i5B=y7b  
'}agi.z  
/** w4L()eP#?=  
* @author treeroot hcVu`Bn  
* @since 2006-2-2 k?=1q[RQH  
* @version 1.0 bH+NRNI]  
*/ VQIvu)I  
public class ImprovedQuickSort implements SortUtil.Sort { [;m@A\F  
TX)W.2u=  
private static int MAX_STACK_SIZE=4096; dv+Gv7&2/  
private static int THRESHOLD=10; x,n l PU  
/* (non-Javadoc) LhG\)>Y%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {S0-y  
*/ av'DyNW\  
public void sort(int[] data) { CU=sQfE  
int[] stack=new int[MAX_STACK_SIZE]; S1|5+PPs  
$f@YQN=  
int top=-1; ?N4FB*x  
int pivot; .!q_jl%U  
int pivotIndex,l,r; coCT]<  
Kp7D I0~  
stack[++top]=0; Kebr>t8^  
stack[++top]=data.length-1; hpf0fU  
loA/d  
while(top>0){ V7,dx@J-  
int j=stack[top--]; e5mu-  
int i=stack[top--]; <^s31.&p  
$yU 5WEX  
pivotIndex=(i+j)/2; Zk`y"[J  
pivot=data[pivotIndex]; =A!oLe$%  
A%#M#hD/  
SortUtil.swap(data,pivotIndex,j); sOqFEvzo1%  
^i@anbH  
file://partition S(@kdL  
l=i-1; = #-zK:4  
r=j; >5O~SF.  
do{ aOvqk ^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); cfmLErkp  
SortUtil.swap(data,l,r); ,h=a+ja8  
} ,^bgk -x-  
while(l SortUtil.swap(data,l,r); :2lpl%/  
SortUtil.swap(data,l,j); <M9NyD`  
?22U0UF  
if((l-i)>THRESHOLD){ s AFn.W  
stack[++top]=i; :uo)-9_  
stack[++top]=l-1; =`x }9|[  
} /mwUDf6x  
if((j-l)>THRESHOLD){ J4+WF#xI2  
stack[++top]=l+1; ;_\y g)X,  
stack[++top]=j; Hn >VPz+I  
} =%8 yEb*5#  
[~Ky{:@)[  
} s[GHDQ;!  
file://new InsertSort().sort(data); ZtZ3I?%U3  
insertSort(data); lEl.'X$  
} |ufL s  
/** brp3xgQ`]  
* @param data DpggZ|J  
*/ )bM,>x  
private void insertSort(int[] data) { KBM*7raA  
int temp; N3$1f$`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 3li$)S1z  
} CUJq [  
} 6y!U68L;B  
} ~!ooIwNNz  
Q u2 ~wp<  
} NsI.mTc2  
D\M"bf>q1  
归并排序: NzAh3k  
3IRur,|'  
package org.rut.util.algorithm.support; OxDq LX  
e6MBy\*n  
import org.rut.util.algorithm.SortUtil; =?$~=1SL+  
(Y'cxwj%  
/** IP/%=m)\%  
* @author treeroot ?98!2:'{9  
* @since 2006-2-2  2d*bF.  
* @version 1.0 g8cBb5(L  
*/ MWme3u)D  
public class MergeSort implements SortUtil.Sort{ %}(` ?  
JPn)Op6  
/* (non-Javadoc) x^@oY5}cr  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N!c FUZ5]  
*/ e".=E ;o`  
public void sort(int[] data) { S3M!"l  
int[] temp=new int[data.length]; #OPEYJ;*9d  
mergeSort(data,temp,0,data.length-1); gy@=)R/~  
} eP" B3Jw  
 @_f^AQ  
private void mergeSort(int[] data,int[] temp,int l,int r){ 8#;=>m%  
int mid=(l+r)/2; @<eKk.Y?+  
if(l==r) return ; /-v ;  
mergeSort(data,temp,l,mid); G@/iK/>5|`  
mergeSort(data,temp,mid+1,r); \dCGu~bT  
for(int i=l;i<=r;i++){ #f"eZAQ {  
temp=data; Nl[&rZ-&  
} S3/%;=|  
int i1=l; 1J0gjO)AZ  
int i2=mid+1; /?r A|  
for(int cur=l;cur<=r;cur++){ <Q(E {c3"  
if(i1==mid+1) Q>D//_TF  
data[cur]=temp[i2++];  >SQzE  
else if(i2>r) "a].v 8l!  
data[cur]=temp[i1++]; N ;=z o-8  
else if(temp[i1] data[cur]=temp[i1++]; Y_Fn)(  
else 6 eryf?  
data[cur]=temp[i2++]; PwW$=M{\.  
} Xk.OyQ@  
} K ,NmDc^  
8Azh&c  
} ,r*Kxy  
EF!J#N2  
改进后的归并排序: sJx_X8  
fD@d.8nXd  
package org.rut.util.algorithm.support; F(n<:TvlK  
Yw#fQFm  
import org.rut.util.algorithm.SortUtil; 9vP;i= fr  
7)QZ<fme  
/** Xuu&`U~%  
* @author treeroot . .5~ x~O  
* @since 2006-2-2 Hk;;+'-  
* @version 1.0 W6T4Zsg  
*/ Jy/< {7j  
public class ImprovedMergeSort implements SortUtil.Sort { lv=q( &  
b5H}0<  
private static final int THRESHOLD = 10; {Z k^J  
7YD+zd:  
/* FWJ**J  
* (non-Javadoc) 4_5f4%S  
* HSysME1X:/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tkZUjQIX  
*/ s8&q8r7%  
public void sort(int[] data) { ~2\Sn-`  
int[] temp=new int[data.length]; 8<"g&+T  
mergeSort(data,temp,0,data.length-1); ZeuL*c \  
} -_nQn  
F/ZFO5C%  
private void mergeSort(int[] data, int[] temp, int l, int r) { |P]W#~Y-  
int i, j, k; }O7sP^  
int mid = (l + r) / 2; )Xg5=zn$  
if (l == r) UH-873AK  
return; rmzzbLTu  
if ((mid - l) >= THRESHOLD) H2%Qu<Kg2  
mergeSort(data, temp, l, mid); (9RfsV4^  
else jz_Y|"{`v  
insertSort(data, l, mid - l + 1); =S{OzF  
if ((r - mid) > THRESHOLD) :+DrV\)  
mergeSort(data, temp, mid + 1, r); SI~jM:S}  
else jbipNgxkr  
insertSort(data, mid + 1, r - mid); vN^.MR+<  
pk9Ics;y  
for (i = l; i <= mid; i++) { KGM__ZO.  
temp = data; N<i5X.X  
} @\w}p E  
for (j = 1; j <= r - mid; j++) { {)"[_<  
temp[r - j + 1] = data[j + mid]; V3ozaVk;  
} ]O@iT= *3  
int a = temp[l]; I3.. Yk%7  
int b = temp[r]; }},0#Ap  
for (i = l, j = r, k = l; k <= r; k++) { BJwuN  
if (a < b) { F8Ety^9>9  
data[k] = temp[i++]; "6\ 5eFN;  
a = temp; z.8nYL5^}  
} else { l+@;f(8}  
data[k] = temp[j--]; iOg4(SPci  
b = temp[j]; ]uox ^HC  
} pZ'q_Oux  
} \"(?k>]E  
} ,i6E L  
uQ-GJI^t  
/** =( |%%,3  
* @param data }qso} WI  
* @param l ]Z5m_-I  
* @param i R?iCJ5m  
*/ Qz(2Iu{E]  
private void insertSort(int[] data, int start, int len) { +Mq\3  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); P4Pc;8T@!  
} N\*oL*[j  
} <b H *f w  
} ,Tr&`2w  
} 3`yO&upk  
kyAN O  
堆排序: xH\\#4/  
L0"|4=  
package org.rut.util.algorithm.support; 3GF67]  
2>9\o]ac4  
import org.rut.util.algorithm.SortUtil; F}So=Jz9h  
]6B9\C.2-_  
/** b_RO%L:"yL  
* @author treeroot `B@eeXa;u  
* @since 2006-2-2 V?S}%-a  
* @version 1.0 je^VJ&ac  
*/ syB pF:`-W  
public class HeapSort implements SortUtil.Sort{ 1<'z)r4  
D/Ki^E  
/* (non-Javadoc) /al56n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kMCP .D45;  
*/ :Q DkaA  
public void sort(int[] data) { AuQ|CXG-\  
MaxHeap h=new MaxHeap(); 4Y?2u  
h.init(data); 5kw  K%  
for(int i=0;i h.remove(); B{&W|z{$  
System.arraycopy(h.queue,1,data,0,data.length); SX"|~Pi(  
} `.J)Z=o  
,5 ka{Q`K  
private static class MaxHeap{ ((A@VcX  
x t-s"A  
void init(int[] data){ pRV.\*:c  
this.queue=new int[data.length+1]; K9EHT-  
for(int i=0;i queue[++size]=data; VQpt1cK*  
fixUp(size); w>j5oz}  
} CWkWW/ZI  
} "}Om0rB}1  
tcj "rV{G  
private int size=0; =h4u N,  
>u> E !5O  
private int[] queue; b\ED<'  
:bct+J}l~  
public int get() { O80Z7  
return queue[1]; T+Re1sPr?  
} Oh1U=V2~  
g/.FJ-I*  
public void remove() { M}o.= Iqa  
SortUtil.swap(queue,1,size--); zNX=V!$  
fixDown(1); {mD0 ug  
} Db Qp (W0  
file://fixdown 2x<BU3  
private void fixDown(int k) { 'S6zkwC]  
int j; EM@|^47$  
while ((j = k << 1) <= size) { O~qRHYv  
if (j < size %26amp;%26amp; queue[j] j++; =? !FO'zt"  
if (queue[k]>queue[j]) file://不用交换 (E0WZ $f}  
break; )q_,V"  
SortUtil.swap(queue,j,k); .\oW@2,RA9  
k = j; V]--d33/a  
} \2 DED  
} Ne+Rs+~4  
private void fixUp(int k) { R?)Yh.vi=t  
while (k > 1) { 5/P. 4<c7  
int j = k >> 1; X'$H'[8;C  
if (queue[j]>queue[k]) |u%;"N'p)  
break; 1R@G7m  
SortUtil.swap(queue,j,k); 9ad)=3A&L  
k = j; 1oO(;--u_  
} ;U4O` pZ  
} uxxk&+M  
[,Rc&7p~R  
} >oq\`E  
h<?Px"& J  
} k:?)0Uh%^  
QaO9-:]eN  
SortUtil: t+A*Ws*o  
u|wl;+.  
package org.rut.util.algorithm; =M?+KbTJ3  
}R+#>P  
import org.rut.util.algorithm.support.BubbleSort; 00;SK!+$  
import org.rut.util.algorithm.support.HeapSort; ef*Z;HI0  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y`22DFO  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;v]C8}L^  
import org.rut.util.algorithm.support.InsertSort; ROTKK8:+:  
import org.rut.util.algorithm.support.MergeSort; FFZ?-sE  
import org.rut.util.algorithm.support.QuickSort; *^@b0f~vj  
import org.rut.util.algorithm.support.SelectionSort; >uZc#Zt  
import org.rut.util.algorithm.support.ShellSort; k 76<CX  
CP9Q|'oJ  
/** u^SInanw  
* @author treeroot C1f$^N  
* @since 2006-2-2 W[I[Xg&  
* @version 1.0 Q3i\`-kbb  
*/ R(0[bMr3Q  
public class SortUtil { *P\lzM  
public final static int INSERT = 1; Zq33R`  
public final static int BUBBLE = 2; w|G7h=  
public final static int SELECTION = 3; fPTLPcPP  
public final static int SHELL = 4; TqN@l\  
public final static int QUICK = 5; v @M6D}  
public final static int IMPROVED_QUICK = 6; }~LGq.H  
public final static int MERGE = 7; On O_7'4 t  
public final static int IMPROVED_MERGE = 8; -,*m\Fe}  
public final static int HEAP = 9; a=ZVKb  
=k d-rIBc  
public static void sort(int[] data) { pFd{Tdh  
sort(data, IMPROVED_QUICK); S ^~"#   
} q<.k:v&  
private static String[] name={ U^[AW$WzU  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" i;~.kgtq4  
}; yD \Kn{  
t|V5[n!  
private static Sort[] impl=new Sort[]{ j8Q_s/n  
new InsertSort(), ^vh!1"T  
new BubbleSort(), gcwJ{&  
new SelectionSort(), Y/UvNb<lK  
new ShellSort(), 8)iI=,T*  
new QuickSort(), zytW3sTZA  
new ImprovedQuickSort(), GBZu<t/  
new MergeSort(), m==DBh  
new ImprovedMergeSort(), z+oy#p6+F.  
new HeapSort() hB<(~L? A]  
}; ghW`xm87  
b"o\-iUioe  
public static String toString(int algorithm){ <J~6Q  
return name[algorithm-1]; XjzGtZ#6  
} g3'dkS!  
PfYeV/M|  
public static void sort(int[] data, int algorithm) { eI`%J3BxR  
impl[algorithm-1].sort(data); (5`(H.(  
} A]QGaWK  
;XNC+mPK  
public static interface Sort { KRm)|bgE  
public void sort(int[] data); ~)pZ5%C  
} |4BD  
oJ5n*[qUI  
public static void swap(int[] data, int i, int j) { '_DB0_Dp  
int temp = data; GZ5DI+3  
data = data[j]; 4VF]t X?o  
data[j] = temp; ci? \W6  
} mK7SEH;  
} Yt_tAm  
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