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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。 09x\i/nb  
插入排序: GD< Afni  
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package org.rut.util.algorithm.support; f#X`e'1  
%o{vD&7\  
import org.rut.util.algorithm.SortUtil; \ 2".Kb@=  
/** (iWNvVGS  
* @author treeroot W:EXL@  
* @since 2006-2-2 gB~SCl54  
* @version 1.0 ASu9c2s  
*/ lfI[r|  
public class InsertSort implements SortUtil.Sort{ -@J;FjrXmP  
c[",WB<9  
/* (non-Javadoc) cUy6/x9&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Yn I   
*/ da[l[b;  
public void sort(int[] data) { _=}Y lR  
int temp; 0U$6TDtmE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); &ul9N)A  
} (Yw5X_|  
} xX"?3%y>  
} A #jiCIc  
;W+.]_$6)T  
} YHKm{A ]  
8n&",)U  
冒泡排序: EkTen:{G  
P, S9gG9  
package org.rut.util.algorithm.support; 0tsll1  
W}.4$f>  
import org.rut.util.algorithm.SortUtil; _fa]2I  
CZ&TUE|:DA  
/** h+$_:](PC  
* @author treeroot %F}`;>C3  
* @since 2006-2-2 #lct"8  
* @version 1.0 SH`"o  
*/ <&+l;z  
public class BubbleSort implements SortUtil.Sort{ Y[x ^59  
crhck'?0  
/* (non-Javadoc) Zn9w1ev  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I1}{7-_t  
*/ %@BQv 4oJ  
public void sort(int[] data) {  j, G/[V  
int temp;  |u$AzI  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 7q67_u? @  
if(data[j] SortUtil.swap(data,j,j-1); t*D[Q$v  
} j?&FK  
} F^ Q  
} xH' H! 8  
} slPFDBx  
Pq_Il9  
} ;V%lFP3#  
f}+G;a9Nj  
选择排序: @nZFw.  
cF/FretoO  
package org.rut.util.algorithm.support;  F_I! +  
?29 KvT;#]  
import org.rut.util.algorithm.SortUtil; fqZ!Bi  
?>AhC{  
/** ?Z14l0iZ%d  
* @author treeroot ucA6s:!={  
* @since 2006-2-2 U}qW9X;o  
* @version 1.0 iSsy_ |  
*/ !-;Me&"I=`  
public class SelectionSort implements SortUtil.Sort { h.7 1O"N  
*y0`P0V|8  
/* gK%&VzG4  
* (non-Javadoc) S$$:G$j  
* N[42al  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -}N{'S,Bp  
*/ s*!2oj  
public void sort(int[] data) { jf$t  
int temp; > ZNL pJQ  
for (int i = 0; i < data.length; i++) { e3Lf'+G\  
int lowIndex = i; &Owt:R)9~  
for (int j = data.length - 1; j > i; j--) { VKs$J)6  
if (data[j] < data[lowIndex]) { UW>~C  
lowIndex = j; tSO F7N/<  
} 6%yr>BFtVV  
} p 3_Q  
SortUtil.swap(data,i,lowIndex);  vG  
} =)bZSb"<"  
} z_Qw's  
Y{J/Oib  
} "1[N;|xa  
<4! w2vxG  
Shell排序: @FbzKHdV/  
Az.Y-O<$\  
package org.rut.util.algorithm.support; TVjY8L9'h  
[S<DdTY9hZ  
import org.rut.util.algorithm.SortUtil; i;\i4MT  
M!I:$DZt  
/** ->j9(76"  
* @author treeroot Lv_6Mf(  
* @since 2006-2-2 lv\2vRYw-  
* @version 1.0 !IGVN:E  
*/ 4 5Ql7~  
public class ShellSort implements SortUtil.Sort{ {`3;Pd`  
"?N`9J|j)~  
/* (non-Javadoc) @lj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cw+ (,1  
*/ Ia(A&Za  
public void sort(int[] data) { $h$+EE!  
for(int i=data.length/2;i>2;i/=2){ Z4(2&t^  
for(int j=0;j insertSort(data,j,i); nrf%/L  
} =LT({8  
} xw=B4u'z  
insertSort(data,0,1); A2+t`[ w  
} 6}|vfw  
jV7q)\uu^  
/** ^QnVYTM  
* @param data +0=RC^   
* @param j F.\]Hqq  
* @param i ++kiCoC  
*/ F^a D!O ~  
private void insertSort(int[] data, int start, int inc) { r1=Zoxc=w  
int temp; 9Qkww&VEk  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); JEP"2MN,  
} fNK~z*  
} N..u<06j/  
} 2`Pk@,:_  
%V+,#  
} Us%VB q  
-(59F  
快速排序: j"NqNv  
^|x{E20  
package org.rut.util.algorithm.support; bqe;) A7  
L@2H>Lh35  
import org.rut.util.algorithm.SortUtil; s@ q54  
ec3('}X  
/** ):\ pD]e  
* @author treeroot nY*ODL  
* @since 2006-2-2 m?m,w$K  
* @version 1.0 xQD#; 7  
*/ G's/Q-'[\  
public class QuickSort implements SortUtil.Sort{ cX&c%~  
=-:o?&64  
/* (non-Javadoc) ;wN.RPE_^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R]r~TJ o  
*/  c\x?k<=  
public void sort(int[] data) { 2HTZ, W  
quickSort(data,0,data.length-1); I@z{G r  
} '<Vvv^Er  
private void quickSort(int[] data,int i,int j){ ("TI~  
int pivotIndex=(i+j)/2; |FNP~5v  
file://swap kB8l`| I  
SortUtil.swap(data,pivotIndex,j); vx ,yz+yP  
|_ @iaLE  
int k=partition(data,i-1,j,data[j]); gVD!.  
SortUtil.swap(data,k,j); :4Y|%7[  
if((k-i)>1) quickSort(data,i,k-1); SMhT>dB  
if((j-k)>1) quickSort(data,k+1,j); nBD7  
GV2}K <s  
} Z@h]dU5%a  
/** My[L3KTTp  
* @param data e@q[Dv'mu  
* @param i Dho~6K }"  
* @param j g =%W"v  
* @return SEuj=Vie#  
*/ O/<jt'  
private int partition(int[] data, int l, int r,int pivot) { eIEcj<f  
do{ -p)HH@6a  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); NT-du$! u  
SortUtil.swap(data,l,r); e)iVX<qb  
} D!-zQ`^  
while(l SortUtil.swap(data,l,r); MdyH/.Te  
return l; :,7VqCh3@  
} wj?f r?  
.6tz ^4  
} yy>4`_  
@-7K~in?^  
改进后的快速排序: 1X{A}9nA  
Z$pR_dazU  
package org.rut.util.algorithm.support; /R,/hi Kx\  
x##Iv|$  
import org.rut.util.algorithm.SortUtil; Wm\f:|U5`  
{:rU5 !n  
/** ())|x[>JS+  
* @author treeroot rLVAI#ci=  
* @since 2006-2-2 ~<$8i}7  
* @version 1.0 Im Tq`  
*/ B]hZ4.B1  
public class ImprovedQuickSort implements SortUtil.Sort { 2T|L# #C  
'1mygplW  
private static int MAX_STACK_SIZE=4096; &?9.Y,  
private static int THRESHOLD=10; EU\1EBT^  
/* (non-Javadoc) F{}z[0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2.x3^/  
*/ l9<+4rK2  
public void sort(int[] data) { )GR^V=o7,Y  
int[] stack=new int[MAX_STACK_SIZE]; i&l$G55F  
ZNx{7]=a  
int top=-1; CHLMY}O0  
int pivot; ( {8Q=Gh  
int pivotIndex,l,r; cis ~]x%  
$Qm;F% >  
stack[++top]=0; =DqGm]tA  
stack[++top]=data.length-1; t,H,*2  
cAL&>T  
while(top>0){ [oYe/<3  
int j=stack[top--]; \myj Y  
int i=stack[top--]; 6znm?s@~  
bc 0|tJc  
pivotIndex=(i+j)/2; ~\Ynih  
pivot=data[pivotIndex]; &B3kzs  
zL_X?UmV  
SortUtil.swap(data,pivotIndex,j); Vk-_v5  
rkzhN59;  
file://partition yRy9*r=  
l=i-1; .*,Zh2eXU  
r=j; ;ndg,05_  
do{ L%BWrmg  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "zv+|_ZAfd  
SortUtil.swap(data,l,r); $]hf2Yr(  
} ElYHA  
while(l SortUtil.swap(data,l,r); Ge @d"  
SortUtil.swap(data,l,j); %+'&$  
U M#]olh  
if((l-i)>THRESHOLD){ kQ:2@SOm  
stack[++top]=i; }??q{B@v  
stack[++top]=l-1; u}$U|Cw-;T  
} nbYaYL?&  
if((j-l)>THRESHOLD){ {b+IDq`)=  
stack[++top]=l+1; W6*(Y  
stack[++top]=j; [s2%t"H-y  
} P]y5E9 k  
co12\,aD  
} :b ;5O3:B  
file://new InsertSort().sort(data); yn=1b:kid  
insertSort(data); ,CvU#ab8$  
} 5Q^~Z},  
/** &"CS1P|  
* @param data RJ-CWt [LG  
*/ PzF)Vg  
private void insertSort(int[] data) { [Z[)hUXE?  
int temp; nU`;MW/^w  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); qVY\5`f@  
} w68qyG|wM  
} wbpxJtJB  
} 3 C[ ;2  
$iB(N ZV  
} q&wMp{  
`SU;TN0  
归并排序: 2L\h+)  
{vU '>pp  
package org.rut.util.algorithm.support; ?W|POk}  
pu^1s#g8w  
import org.rut.util.algorithm.SortUtil; -ss2X  
1n5&PNu  
/** ]-q:Z4rb  
* @author treeroot [F>zM  
* @since 2006-2-2 Z-~^)lo  
* @version 1.0 : Z.mM5  
*/ 8(+X0}  
public class MergeSort implements SortUtil.Sort{ Psv-y  
\k* ]w_m-  
/* (non-Javadoc) @.gCeMlOf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /@ OGYYH,M  
*/ 'IgtBd|K>  
public void sort(int[] data) { P_Z o}.{  
int[] temp=new int[data.length]; h(zi$V  
mergeSort(data,temp,0,data.length-1); X31kHK5F_  
} "y`?KY$[N  
Wqqo8Y~fq  
private void mergeSort(int[] data,int[] temp,int l,int r){ '|+_~ZO*d  
int mid=(l+r)/2; SY{J  
if(l==r) return ; mH hm~u  
mergeSort(data,temp,l,mid); B O"+m  
mergeSort(data,temp,mid+1,r); >Te{a*`"m:  
for(int i=l;i<=r;i++){ Comu c  
temp=data; i<T`]g  
} H1@"Yg8  
int i1=l; k{;:KW|  
int i2=mid+1; 44]ae~@a  
for(int cur=l;cur<=r;cur++){ zZy>XHR H  
if(i1==mid+1) $~2A o[  
data[cur]=temp[i2++]; E>[~"~x"pV  
else if(i2>r) *R:nB)(6<  
data[cur]=temp[i1++]; 5|/vc*m_0'  
else if(temp[i1] data[cur]=temp[i1++]; :1s1wY3Y  
else /)G9w]|T  
data[cur]=temp[i2++]; 1H ZexV  
} .!`j3W]  
} ,rN7X<s54  
]F_u  
} S !e0 :  
]f\rB8k|&  
改进后的归并排序: k82'gJ;MC=  
n2QD*3i  
package org.rut.util.algorithm.support; H#ihU3q  
 'dg OE  
import org.rut.util.algorithm.SortUtil; 6-^+btl)#  
 "3v%|  
/** VOiphw`  
* @author treeroot Zw3|HV(so  
* @since 2006-2-2 {k)MC)%  
* @version 1.0 U9 If%0P  
*/ @GEvI2Vf.0  
public class ImprovedMergeSort implements SortUtil.Sort { N0XGW_f  
(2{1m#o  
private static final int THRESHOLD = 10; ffWvrY;j[  
N$3F4b%+  
/* %AJdtJ@0H  
* (non-Javadoc) FkS{Z s  
* }skXh_Vu4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) leiza?[  
*/ ~p8!Kb6  
public void sort(int[] data) { O 8fh'6  
int[] temp=new int[data.length]; B>'\g O\2  
mergeSort(data,temp,0,data.length-1); `aUA_"f  
} @B[V'|  
ik]UzB  
private void mergeSort(int[] data, int[] temp, int l, int r) { 5n"'M&Ce  
int i, j, k; -V+fQGZe  
int mid = (l + r) / 2; ;<*VwXJR  
if (l == r) f{vnZ|WD  
return; \t(/I=E8/  
if ((mid - l) >= THRESHOLD) 4v{gc/g  
mergeSort(data, temp, l, mid); t & ucq Y  
else ^ yfT7050  
insertSort(data, l, mid - l + 1); ](O!6_'d  
if ((r - mid) > THRESHOLD) 0 8U:{LL  
mergeSort(data, temp, mid + 1, r); 7<) .luV  
else cBAA32wf  
insertSort(data, mid + 1, r - mid); m3,v&Z  
6Y=$7%z  
for (i = l; i <= mid; i++) { ycH=L8  
temp = data; KUp lN1Sy  
} K 4 >d  
for (j = 1; j <= r - mid; j++) { SAqX[c  
temp[r - j + 1] = data[j + mid]; PeG8_X}u9  
} >97V2W  
int a = temp[l]; {:"bX~<^  
int b = temp[r]; d) > if<o  
for (i = l, j = r, k = l; k <= r; k++) { tV T(!&(  
if (a < b) { _ '}UNIL  
data[k] = temp[i++]; ~+1t 17  
a = temp; J4JKAv~3  
} else { Ltu;sw  
data[k] = temp[j--]; U_!6pqFc  
b = temp[j]; {:? -)Xq  
} N#UyAm<9  
} S |B7HS5  
} ){,8}(|  
0>AA-~=-  
/** NQOdgp  
* @param data ^ sz4rk  
* @param l ]v+\v re  
* @param i 9iv!+(ni  
*/  :${Lm&J  
private void insertSort(int[] data, int start, int len) { :0]KIybt  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); vm Hf$rq  
} Dl7#h,GTc<  
} JU~l  
} F &uU ,);  
} 8J>s|MZ  
.<tb*6rX>  
堆排序: 3n,F5?! m  
)Z]8SED  
package org.rut.util.algorithm.support; h-6kf:XP%  
;Neld #%J  
import org.rut.util.algorithm.SortUtil; H_jMl$f)j  
(llg!1  
/** H*!E*_  
* @author treeroot 3vMfms  
* @since 2006-2-2 -ERDWY  
* @version 1.0 JWEqy+,Fjw  
*/ HtXzMSGo7  
public class HeapSort implements SortUtil.Sort{ $cYh X^YG.  
x=9drKIw>  
/* (non-Javadoc) B>JRta;hj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iptzVr#b[  
*/ X)'uTf0  
public void sort(int[] data) { oo /#]a  
MaxHeap h=new MaxHeap(); aiz_6@Qfz*  
h.init(data); r% qgLP{v  
for(int i=0;i h.remove(); []'BrG)!  
System.arraycopy(h.queue,1,data,0,data.length); >y2gfD  
} O>}aK.H  
Y>IEB,w  
private static class MaxHeap{ jy6% CSWQ  
\# #~Tq  
void init(int[] data){ eM{+R^8  
this.queue=new int[data.length+1]; @C?RbTHy  
for(int i=0;i queue[++size]=data; ?a(ApD\  
fixUp(size); 4D0"Y #&G  
} $_NVy>\&  
} Z~v.!j0  
pWeKN`  
private int size=0; _O)~<Sk-*z  
QKe=/;  
private int[] queue; qL] !/}  
2x t 8F  
public int get() { S\mh{#Lpk  
return queue[1]; meE&, {  
} 3!#d&  
6=iz@C7r  
public void remove() { r IY_1  
SortUtil.swap(queue,1,size--); p'!cGJL  
fixDown(1); <kp?*xV]]  
} V|DAw[!6N  
file://fixdown }ob#LC,  
private void fixDown(int k) { XB^o>/|@S  
int j; ;QS-a  
while ((j = k << 1) <= size) { *ewE{$UpK  
if (j < size %26amp;%26amp; queue[j] j++; 4OC ^IS  
if (queue[k]>queue[j]) file://不用交换 *i&ks> 4N  
break; R9^Vk*`gFU  
SortUtil.swap(queue,j,k); RYy_Ppn96f  
k = j; l7nc8K  
} 'tklz*  
} `gx_+m^  
private void fixUp(int k) { H W)> `  
while (k > 1) { pFx7URZA  
int j = k >> 1; [a`89'"z  
if (queue[j]>queue[k]) >6KuZ_  
break; 7gNJ}pLDx  
SortUtil.swap(queue,j,k); Nxp 7/Nn3  
k = j; 1@egAo)  
} 1 VcZg%I  
} 0p)#!$  
Etj@wy/E  
} 2ntL7F<ow  
+7.\>Ucq`  
} 4v_<<l  
r ".*l?=  
SortUtil: z;J"3kM  
}CIH1q3P  
package org.rut.util.algorithm; A_i=hj 2f  
9rf6,hF  
import org.rut.util.algorithm.support.BubbleSort; 'H0uvvhOp  
import org.rut.util.algorithm.support.HeapSort; k+t?EZ6L  
import org.rut.util.algorithm.support.ImprovedMergeSort; )w4i0Xw^C:  
import org.rut.util.algorithm.support.ImprovedQuickSort; ~+ Mp+gE  
import org.rut.util.algorithm.support.InsertSort; -XRn%4EX?  
import org.rut.util.algorithm.support.MergeSort; \QGh@AQp"  
import org.rut.util.algorithm.support.QuickSort; Y{ijSOl3  
import org.rut.util.algorithm.support.SelectionSort; 49W@?: b  
import org.rut.util.algorithm.support.ShellSort; N2#Wyt8MC  
5<^ $9('  
/** C8W#$a  
* @author treeroot oc7&iL  
* @since 2006-2-2 aJdd2,e  
* @version 1.0 H,u{zU')  
*/ %-1-y]R|  
public class SortUtil { m:SG1m_6  
public final static int INSERT = 1; zk#"n&u0  
public final static int BUBBLE = 2; #ueWU  
public final static int SELECTION = 3; oR}cE Sr  
public final static int SHELL = 4; i&=I5$  
public final static int QUICK = 5; <Nwqt[.  
public final static int IMPROVED_QUICK = 6; > mk>VM  
public final static int MERGE = 7; (E[c-1s  
public final static int IMPROVED_MERGE = 8; ]Dec/Nnj  
public final static int HEAP = 9; y(^t&tgjS  
<n? cRk'.  
public static void sort(int[] data) { '{*{  
sort(data, IMPROVED_QUICK); _UI*W&*  
} xq$(=WPI  
private static String[] name={ `ECY:3"$KA  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" {%Cb0Zh  
}; Vq-W|<7C=  
w`KqB(36  
private static Sort[] impl=new Sort[]{ Lz6b9W  
new InsertSort(), B>C+qj@  
new BubbleSort(), =S+*= jA  
new SelectionSort(),  Z(F['Zf  
new ShellSort(), M~+}ss  
new QuickSort(), xP/?E  
new ImprovedQuickSort(), VW&EdrR,S  
new MergeSort(), )cP &c=  
new ImprovedMergeSort(),  S1$lNB  
new HeapSort() WVZ](D8Gc]  
}; 3u[m? Vw  
SbLm  
public static String toString(int algorithm){ n#$sLXVy  
return name[algorithm-1]; +{#65 z  
} OEi u,Y|@l  
>f$N G  
public static void sort(int[] data, int algorithm) { #K#BNpG|  
impl[algorithm-1].sort(data); 7XzhKA6  
} p+7G  
;z2\ Q$  
public static interface Sort { ?qC6p|H  
public void sort(int[] data);  3-~*  
} _nwsIjsW  
$/p0DY  
public static void swap(int[] data, int i, int j) { kx{LY`pY  
int temp = data; 9[2qgw\D  
data = data[j]; (;!92ct[?  
data[j] = temp; {'#1do}{  
} I-Q@v`  
} wE3L,yx=  
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