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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。 E#RDqL*J  
插入排序: VO5#Qgen  
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package org.rut.util.algorithm.support; y G~?MEh{  
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import org.rut.util.algorithm.SortUtil; ,O5NLg-  
/** ~i= _J3'  
* @author treeroot \0gis#  
* @since 2006-2-2 B^=-Z8  
* @version 1.0 pp?D7S  
*/ .N;=\C*  
public class InsertSort implements SortUtil.Sort{ ;._ l 0Jw  
cdH>n)  
/* (non-Javadoc) E, Z$pKL?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) XTs8s12  
*/ q_lKKzA  
public void sort(int[] data) { Q>qUk@  
int temp; ux-/>enc  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); evJ4C#Pr  
} E)&I@m  
} iO{hA  
} 'ycJMYP8  
Ep_HcX`  
} , u=`uD  
W.jGGt\<\  
冒泡排序: D>r&}6<  
.Z`R^2MU  
package org.rut.util.algorithm.support; >~rTqtKd  
O^PKn_OJ  
import org.rut.util.algorithm.SortUtil; ?5__oT  
t^-d/yKt0w  
/** R+:yVi[F]U  
* @author treeroot _%Bi: HG0  
* @since 2006-2-2 =[ 46`-_  
* @version 1.0 z|uDy2  
*/ cU (D{~  
public class BubbleSort implements SortUtil.Sort{ Y|m +dT6  
;LfXi 8)  
/* (non-Javadoc) %Qgw7p4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hW' )Sp  
*/ P;y45b  
public void sort(int[] data) { 3yme1Mb  
int temp; yF:1( 4  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0 JS?;fk  
if(data[j] SortUtil.swap(data,j,j-1); bRDYGuC  
} Rh2+=N<X  
} OKZV{Gja  
} 234p9A@  
} GMx&y2. Z  
;>hO+Wo  
} `RT>}_j  
iXkF1r]i  
选择排序: )* :gqN  
]#<4vl\  
package org.rut.util.algorithm.support; ]EbM9Fo-U  
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import org.rut.util.algorithm.SortUtil; eIF5ZPSZi  
?,Xw[pR  
/** je-!4r,  
* @author treeroot y1D L,%j  
* @since 2006-2-2 tFn)aa~L  
* @version 1.0 +480 l}  
*/ ,pfG  
public class SelectionSort implements SortUtil.Sort { )m+W j  
F;EwQjTF  
/* P:S.~Jq  
* (non-Javadoc) \w>y`\6mX  
* @s&71a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q}JOU  
*/ BVQqY$>  
public void sort(int[] data) { m 0C@G5  
int temp; u#fM_>ML  
for (int i = 0; i < data.length; i++) { /62!cp/F/D  
int lowIndex = i; ,KZ~?3$yj  
for (int j = data.length - 1; j > i; j--) { !n!*/[}X  
if (data[j] < data[lowIndex]) { /HEw-M9z  
lowIndex = j; s[*rzoA  
} .sW|Id )  
} g =hg%gRy"  
SortUtil.swap(data,i,lowIndex); Paq4  
} 2qNt,;DQ  
} $Wol?)z  
j_[tu!~  
} +E+p"7  
z9Mfd#5?>P  
Shell排序: E~T-=ocKE  
sdrfsrNvB-  
package org.rut.util.algorithm.support; ]cvwIc">  
0auYG><=  
import org.rut.util.algorithm.SortUtil; 9RL`<,Q  
aK~8B_5k8  
/** 8`{:MkXP  
* @author treeroot (m}'4et~L  
* @since 2006-2-2 :kV#y  
* @version 1.0 }#+^{P3;  
*/ Po0A#Zl  
public class ShellSort implements SortUtil.Sort{ kazzVK5x  
QL/(72K  
/* (non-Javadoc) rXq.DvQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cZ*@$%_  
*/ O\tb R=  
public void sort(int[] data) { T Z@]:e:"b  
for(int i=data.length/2;i>2;i/=2){ 7z,C}-q  
for(int j=0;j insertSort(data,j,i); (E 3b\lST  
} `[yKFa I  
} #z%fx   
insertSort(data,0,1); est9M*Fn  
} RBd7YWo\|j  
8W7J3{d  
/** I][*j  
* @param data 1.hyCTnI  
* @param j >6-`}G+|  
* @param i hfB%`x#akQ  
*/ .V<+v-h  
private void insertSort(int[] data, int start, int inc) { 3\,4 ]l|  
int temp; 4"ZP 'I;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); LOYk9m  
} G.B2('  
} }>|s=uGW  
} d1T!+I  
4at?(B+  
} DCa^ u'f  
-i|}m++  
快速排序: Gz0]}]A  
IPpN@  
package org.rut.util.algorithm.support; y.k~Y0  
!BF; >f`  
import org.rut.util.algorithm.SortUtil; ^7*11%Q  
372rbY  
/** TX/Xt7#R:  
* @author treeroot ; 2#y7!  
* @since 2006-2-2 Tidn-2L73O  
* @version 1.0 t?gic9 q  
*/ T!{w~'=F  
public class QuickSort implements SortUtil.Sort{ NxY#NaE:?4  
^\% (,KNo  
/* (non-Javadoc) 9FR5Jw>t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N"R]Yp;j  
*/ HiFUv>,u  
public void sort(int[] data) { @HCVmg:  
quickSort(data,0,data.length-1); gH vZVC[b  
} ]EAO+x9  
private void quickSort(int[] data,int i,int j){ i]4I [!  
int pivotIndex=(i+j)/2; n@i HFBb  
file://swap WwFm*4{[o  
SortUtil.swap(data,pivotIndex,j); q2j{tP#  
>=>2m2z=  
int k=partition(data,i-1,j,data[j]); Or+U@vAnk  
SortUtil.swap(data,k,j); :cECRm*  
if((k-i)>1) quickSort(data,i,k-1); o|:b;\)b  
if((j-k)>1) quickSort(data,k+1,j); "sCRdx]_  
+\A,&;!SR  
} U)gH}0n&  
/** =WATyY:s  
* @param data _VN?#J)o  
* @param i 3"i-o$P  
* @param j HC8e>kP9b  
* @return yyJ  f%{  
*/ ]m<$}  
private int partition(int[] data, int l, int r,int pivot) { I236 RIq  
do{  (ZizuHC  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); F>l] 9!P|m  
SortUtil.swap(data,l,r); e !Y~Qy  
} !pW0qX\1n  
while(l SortUtil.swap(data,l,r); T^KKy0ZGM  
return l; }0z)5c  
} GxxW&y  
%> eiAB_b  
} 2zb"MEOS5  
j^JPZ{ej ?  
改进后的快速排序: fr3d  
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package org.rut.util.algorithm.support; kevrsV]/$  
/3T1U  
import org.rut.util.algorithm.SortUtil; 7$=In K  
0S~rgq|O  
/** ?`ZU R& 20  
* @author treeroot vE?G7%,  
* @since 2006-2-2 HV|,}Wks6s  
* @version 1.0 u6agoK|^9  
*/ h]gp^?=  
public class ImprovedQuickSort implements SortUtil.Sort { n>YKa)|W`  
NLqzi%s  
private static int MAX_STACK_SIZE=4096; ?a5!H*,  
private static int THRESHOLD=10; T5h H  
/* (non-Javadoc) 4[e X e$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) zF<R'XP  
*/ `;C  V=,M  
public void sort(int[] data) { 5;EvNu  
int[] stack=new int[MAX_STACK_SIZE]; ,O(hMI85]  
=,M5KDk`  
int top=-1; QWYJ *  
int pivot; lo+A%\1  
int pivotIndex,l,r; Xv^qVn4  
R m( "=(  
stack[++top]=0; }7Q%6&IR  
stack[++top]=data.length-1; 5b*C1HS@X  
8ib:FF(= u  
while(top>0){ |{ip T SH  
int j=stack[top--]; !|(NgzDP/  
int i=stack[top--]; N6:`/f+A>T  
1+s;FJ2}  
pivotIndex=(i+j)/2; g- gV2$I  
pivot=data[pivotIndex]; K"MX!  
y6a3t G  
SortUtil.swap(data,pivotIndex,j); O0.*Pmt  
(9a^$C*  
file://partition g 7H(PF?  
l=i-1; fJg+Ryo  
r=j; H:| uw  
do{ oEv 'dQ9  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ]f_p 8?j"  
SortUtil.swap(data,l,r); 2^7`mES  
} ~xFkU#  
while(l SortUtil.swap(data,l,r); QXK{bxwC  
SortUtil.swap(data,l,j); W=?<<dVYD  
? J0y|  
if((l-i)>THRESHOLD){ z24q3 3O  
stack[++top]=i; %N._w!N<5n  
stack[++top]=l-1; 6gDN`e,@  
} {Sh ;(.u^  
if((j-l)>THRESHOLD){ hZb_P\1X  
stack[++top]=l+1; E1 2uZ$X  
stack[++top]=j; FSO).=#  
} F== p<lrs  
8s@3hXD&  
} >t+P(*u  
file://new InsertSort().sort(data); !N^@4*  
insertSort(data); [a(#1  
} xmoxZW:  
/** :3 mh@[V  
* @param data +}AI@+  
*/ "AqB$^S9t  
private void insertSort(int[] data) { tH4B:Bgj!  
int temp; 2 %]X+`+O  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ;_=&-mz  
} omx=  
} QJ;2ZN,  
} c+ie8Q!  
ueNS='+m  
} 8Zdn,}Z  
pxi3PY?  
归并排序: #'}*dy/  
:`sUt1Fw.  
package org.rut.util.algorithm.support; hy!3yB@  
HzJz+ x:  
import org.rut.util.algorithm.SortUtil; ]?4hyN   
-Y8B~@]P?  
/** Fr-SvsNFB  
* @author treeroot 7tp36TE  
* @since 2006-2-2 3so %gvY.'  
* @version 1.0 P+}h$ _x  
*/ j~MI<I+l[  
public class MergeSort implements SortUtil.Sort{ WIGi51yC.x  
r JB}qYD  
/* (non-Javadoc) ALHIGJW:6$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8P`"M#fI  
*/ eMzk3eOJ  
public void sort(int[] data) { ar,7S&s H  
int[] temp=new int[data.length]; \U_@S.  
mergeSort(data,temp,0,data.length-1); eO1lnO|  
}  !VpoZ  
t{>q|0  
private void mergeSort(int[] data,int[] temp,int l,int r){ -?a 26o%e  
int mid=(l+r)/2; ]M3yLYK/P  
if(l==r) return ; "@n%Z  
mergeSort(data,temp,l,mid); dh\P4  
mergeSort(data,temp,mid+1,r); =(^3}x  
for(int i=l;i<=r;i++){ +7}]E1Uf  
temp=data; j<$2hiI/?&  
} l,).p  
int i1=l; HaYo!.(Fv  
int i2=mid+1; ;*J  
for(int cur=l;cur<=r;cur++){ xSu >  
if(i1==mid+1) B5QFK  
data[cur]=temp[i2++]; 5V-I1B&  
else if(i2>r) wIgS3K  
data[cur]=temp[i1++]; Bw.i}3UT6  
else if(temp[i1] data[cur]=temp[i1++]; Bw yx c  
else -\MG}5?!  
data[cur]=temp[i2++]; FI.\%x  
} d(K +);!  
} I^]nqK  
8Fub<UhJ  
} Dv6}bx(  
4M T 7`sr  
改进后的归并排序: wC*X4 '  
Gw` L"  
package org.rut.util.algorithm.support; VEH>]-0K  
gG uO  
import org.rut.util.algorithm.SortUtil; 05R@7[GWq  
 !@sUj  
/** 2<6UwF  
* @author treeroot p7 ~!z.)o  
* @since 2006-2-2 !x)R=Z/C  
* @version 1.0 k7^5Bp8=  
*/ (k P9hcV  
public class ImprovedMergeSort implements SortUtil.Sort { xD7]C|8o  
+`15le`R  
private static final int THRESHOLD = 10; OTv)  
\7_y%HR  
/* @VI@fN  
* (non-Javadoc) V[V[~;Py  
* qgB_=Q#E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @F>D+=hS  
*/ [>9is=>o.  
public void sort(int[] data) { i~72bMwsA  
int[] temp=new int[data.length]; =pr7G+_u  
mergeSort(data,temp,0,data.length-1); XP}<N&j  
} ~M$Wd2Th  
x~sBzTa  
private void mergeSort(int[] data, int[] temp, int l, int r) { _v:SP LU  
int i, j, k; #K&Gp-  
int mid = (l + r) / 2; ` %}RNC  
if (l == r) -RLOD\ZBh  
return; ;@J}}h'y  
if ((mid - l) >= THRESHOLD) (At$3b6  
mergeSort(data, temp, l, mid); @+DX.9  
else DfB7*+x{  
insertSort(data, l, mid - l + 1); #Q5o)x  
if ((r - mid) > THRESHOLD) tBSW|0  
mergeSort(data, temp, mid + 1, r); R!1p^~/  
else {)Xy%QV  
insertSort(data, mid + 1, r - mid); j1Ezf=N6`  
62u4-}JzF  
for (i = l; i <= mid; i++) { ?4uL-z](V  
temp = data; )gi9f1n`  
} d5-qZ{W  
for (j = 1; j <= r - mid; j++) { r<\u6jF  
temp[r - j + 1] = data[j + mid]; }2oc#0  
} X{VOAcugr  
int a = temp[l]; ZC8wA;!z^  
int b = temp[r]; ,u m|1dh  
for (i = l, j = r, k = l; k <= r; k++) { DNi+"[~&P  
if (a < b) { kT=8e;K  
data[k] = temp[i++]; lxi<F  
a = temp; [hs ds\  
} else { 8k79&|  
data[k] = temp[j--]; P~dcW  
b = temp[j]; =u;MCQ[  
} P2Y^d#jO  
} !9x}  
} R-Sym8c  
s^SJY{  
/** >dT*rH3w  
* @param data kVL.PY\K  
* @param l 7z-[f'EIUI  
* @param i pk~WrqK}  
*/ M=Wz  
private void insertSort(int[] data, int start, int len) { )e{}V\;q  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); QW"! (`K  
} Pz^544\~ou  
} $!DpjN  
} _B0L.eF  
} ?Ob3tUz2  
Ss`LLq0LO  
堆排序: _f{{( 7  
Xr{v~bf  
package org.rut.util.algorithm.support; s`U J1eJ  
28nFRr  
import org.rut.util.algorithm.SortUtil; SAz   
=">NQ)98u  
/** Mp]rUPK  
* @author treeroot pJ{Y lS{  
* @since 2006-2-2 W>LR\]Ti@  
* @version 1.0 D,6:EV"sa  
*/ t&p|Ynz?i  
public class HeapSort implements SortUtil.Sort{ Dzbz)Zst  
3a|\dav%  
/* (non-Javadoc) m kexc~l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oU/5 a>9~  
*/ 3o qHGA:}  
public void sort(int[] data) { ##{taR8  
MaxHeap h=new MaxHeap(); (w{j6).3Dj  
h.init(data); %3 rP `A  
for(int i=0;i h.remove(); -HuA \0J  
System.arraycopy(h.queue,1,data,0,data.length); YzWz|  
} #Dac~>a'  
*h|U,T7ew  
private static class MaxHeap{ A=4OWV?  
j39wA~ K  
void init(int[] data){ g+l CMW\  
this.queue=new int[data.length+1]; Z{R>  
for(int i=0;i queue[++size]=data; U6VKMxSJ  
fixUp(size); Yw9GN2AG  
} ry!!9Z>9n  
} W4N{S.#!  
F5Va+z,jg  
private int size=0; j@9T.P1  
;);kEq/=P  
private int[] queue; h\e.e3/  
Y0>y8U V  
public int get() { *2?@ |<(r  
return queue[1]; &FD>&WRV  
} iB{V^ksU  
fIF8%J ^3  
public void remove() { 7 3m1  
SortUtil.swap(queue,1,size--); $^ P0F9~0  
fixDown(1); yjAL\U7`T  
} 7L??ae  
file://fixdown ]-q;4.  
private void fixDown(int k) { #F#%`Rv1  
int j; A's{j7  
while ((j = k << 1) <= size) { g){<y~Mk  
if (j < size %26amp;%26amp; queue[j] j++; RZ7@cQY  
if (queue[k]>queue[j]) file://不用交换 >/|*DI-HJ  
break; Uv.)?YeGh  
SortUtil.swap(queue,j,k); 40/Y\  
k = j; %LV9=!w  
} ..qCPlK;  
} grYe&(`X  
private void fixUp(int k) { G?ZXWu.  
while (k > 1) { weQ_*<5%  
int j = k >> 1; /NlGFO*Z  
if (queue[j]>queue[k]) yw!{MO  
break; 2?5>o!C  
SortUtil.swap(queue,j,k); q@qsp&0/  
k = j; $k?>DP 4  
} Y} /-C3)  
} P%6~&woF  
: 'c&,oLY  
} xmG<]WF>E  
rc{v$.o0  
} yLGRi^d#  
?0SEMmp`H  
SortUtil: J1vR5wbu  
9F vFhY  
package org.rut.util.algorithm; g*Phv|kI  
'7/)Ot(  
import org.rut.util.algorithm.support.BubbleSort; B6"0OIDY"  
import org.rut.util.algorithm.support.HeapSort; _+,TT['57s  
import org.rut.util.algorithm.support.ImprovedMergeSort; gSgr6TH0  
import org.rut.util.algorithm.support.ImprovedQuickSort; Gq6*SaTk  
import org.rut.util.algorithm.support.InsertSort; <UI [%yXj  
import org.rut.util.algorithm.support.MergeSort; <[phnU^ 8  
import org.rut.util.algorithm.support.QuickSort; sS Mh`4'  
import org.rut.util.algorithm.support.SelectionSort; JLYi]nZ  
import org.rut.util.algorithm.support.ShellSort; %RVZD#zr  
y(&Ac[foS}  
/** )7d&NE_  
* @author treeroot j [a(#V{  
* @since 2006-2-2 ZoeD:xnh[  
* @version 1.0 TV:9bn?r)  
*/ Mhu*[a=;x  
public class SortUtil { XuTD\g3)  
public final static int INSERT = 1; O8o3O 6[Y  
public final static int BUBBLE = 2; p'k0#R$  
public final static int SELECTION = 3; (mOtU8e  
public final static int SHELL = 4; dveiQ  
public final static int QUICK = 5; 5\v3;;A[  
public final static int IMPROVED_QUICK = 6; : +u]S2u{  
public final static int MERGE = 7; &L:!VL{I  
public final static int IMPROVED_MERGE = 8; GVz6-T~\>  
public final static int HEAP = 9; Zc yc*{DS  
?5p>BER?  
public static void sort(int[] data) { N;R^h? '  
sort(data, IMPROVED_QUICK); q| 7(  
} ==B6qX8T  
private static String[] name={ ,_P-$lB  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" b' y%n   
}; edD)TpmE,  
No$3"4wk  
private static Sort[] impl=new Sort[]{  bLL2  
new InsertSort(), FsPw1A$y  
new BubbleSort(), : DNjhZ  
new SelectionSort(), RNL9>7xV  
new ShellSort(), "|NI]Kv  
new QuickSort(), wq{hF<  
new ImprovedQuickSort(), ;|RTx  
new MergeSort(), Q/?$x*\>  
new ImprovedMergeSort(), [KQi.u  
new HeapSort() &[9709 (=  
}; r^ XVB`v  
jCY %|  
public static String toString(int algorithm){ =AT."$r>  
return name[algorithm-1]; %xW"!WbJ|  
} fJ\[*5eiS  
6b,V;#Anj  
public static void sort(int[] data, int algorithm) { [;N'=]`  
impl[algorithm-1].sort(data); "7 yD0T)2  
} >~f]_puT  
d5b%  W3  
public static interface Sort { N[hG8f  
public void sort(int[] data); K:M8h{Ua  
} =D(j)<9$A  
h( 4v8ae  
public static void swap(int[] data, int i, int j) { pYg/Zm Jd  
int temp = data; h1RSVp+?n  
data = data[j]; "4Nt\WQ  
data[j] = temp; +_!QSU,@  
} ~Ei<Z`3}7"  
} h;Kx!5)y  
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