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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。 Y3 -f68*(  
插入排序: [ /<kPi  
S@TfZ3Go|  
package org.rut.util.algorithm.support; &MB1'~Q,hq  
~n(LBA  
import org.rut.util.algorithm.SortUtil; 0r?]b*IEK  
/** I$XwM  
* @author treeroot B$7Cjv  
* @since 2006-2-2 y k\/Cf  
* @version 1.0 @xk;]H80  
*/ t[AA=  
public class InsertSort implements SortUtil.Sort{ .z*}%,G  
43~v1pf{!  
/* (non-Javadoc) H.o3d/8:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <UTO\w%  
*/ Zcg-i:@  
public void sort(int[] data) { ,C:^K`k&  
int temp; J*AYZS-tSE  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); v] m`rV8S[  
} EiyHZ  
} %MEWw  
} +"|TPKas  
,D&-.`'E  
} D z[ ,;  
7 h>,  
冒泡排序: Zlygx  
L=WKqRa>4  
package org.rut.util.algorithm.support; >X5RRSo  
X?(R!=a  
import org.rut.util.algorithm.SortUtil; "I@akM$x  
F;Q'R |HQ  
/** u(PUbxJ V  
* @author treeroot xlh<}V tp  
* @since 2006-2-2 kjt(OFh'Y+  
* @version 1.0 l%qh^0  
*/  &'?Hh(  
public class BubbleSort implements SortUtil.Sort{ - rI4_Dl  
~D`  
/* (non-Javadoc) U99Uny9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =Wz)(N  
*/ A7T(p7pP  
public void sort(int[] data) { k,ezB+  
int temp; Qv)DSl  
for(int i=0;i for(int j=data.length-1;j>i;j--){ + +Eu.W;&#  
if(data[j] SortUtil.swap(data,j,j-1); J0o,ZH9  
} 8v=t-GJW  
} +WguWLO"  
} QT|\TplJt  
} m';4`Y5-  
*Xn6yL9  
} :4LWm<P  
l7Wdbx5x0  
选择排序: oxJAI4{y 4  
J<&?Hb*|  
package org.rut.util.algorithm.support; omT^jh  
zQ(`pld  
import org.rut.util.algorithm.SortUtil; !wZIXpeL  
Pjq()\/[Z  
/** L D%SLJ:  
* @author treeroot Pj5:=d8z(  
* @since 2006-2-2 tqL2' (=  
* @version 1.0 6H;\Jt  
*/ }*vE/W  
public class SelectionSort implements SortUtil.Sort { +,)Iv_Xl$  
t"5ZYa  
/* R?Ch8mW.!  
* (non-Javadoc) $2a_!/  
* 6zGeGW  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 14(ct  
*/ hE'>8{  
public void sort(int[] data) { `H9 !Z$7G  
int temp; OU*skc>  
for (int i = 0; i < data.length; i++) { j@4]0o  
int lowIndex = i; mILCC} Kt  
for (int j = data.length - 1; j > i; j--) { E/gfX   
if (data[j] < data[lowIndex]) { o?I`n*u"X  
lowIndex = j; j{/5i`5m  
} r&~]6 U  
} <)"2rxX&5  
SortUtil.swap(data,i,lowIndex); *zdUCX  
} O8-Z >;  
} a%QgL&_5  
anORoK.  
} u]]mbER*t#  
u_b6u@r7  
Shell排序: FS*J8)  
mqY=N~/O  
package org.rut.util.algorithm.support; gb}ov* *  
cb/$P!j7  
import org.rut.util.algorithm.SortUtil; qV-1aaA  
uX6rCokr  
/** & sXMB  
* @author treeroot : z\||f  
* @since 2006-2-2 kZfj"+p_S  
* @version 1.0 eu//Q'W  
*/ FMitIM*]   
public class ShellSort implements SortUtil.Sort{ .Vs|&c2im  
7324#HwS  
/* (non-Javadoc) 5JG`FRW!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) om6`>I*  
*/ Vygh|UEo  
public void sort(int[] data) {  Gc;-zq  
for(int i=data.length/2;i>2;i/=2){ GKG:iR)  
for(int j=0;j insertSort(data,j,i); +Q"XwxL<6  
} qVvnl  
} -WGlOpg0;  
insertSort(data,0,1); [I[*?9}$"  
} (Sj<>xgd  
l>("L9  
/** rAD4}A_w  
* @param data 4z^~,7J^  
* @param j 8[a N5M]  
* @param i Ft_g~]kZo  
*/ FR\r/+n:t0  
private void insertSort(int[] data, int start, int inc) { g O8~$Aj  
int temp; #(Yd'qKo  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); 'Hu+8,xA  
} %Siw>  
} d-gcXaA-8  
} SUL\|z`5  
?DY6V;&F@f  
} @scSW5+  
yz)Nco]  
快速排序: ler$HA%F]  
x$pz(Q&v  
package org.rut.util.algorithm.support; <d{>[R)  
ZR8y9mx2"  
import org.rut.util.algorithm.SortUtil; 8SCXA9}  
T`c:16I  
/** 8 v da"  
* @author treeroot y-Lm^ GW4  
* @since 2006-2-2 )[=C@U  
* @version 1.0 {l\Ep=O vx  
*/ ;h#Q!M&e#  
public class QuickSort implements SortUtil.Sort{ vJ;0%;eu[!  
%mOQIXr1s  
/* (non-Javadoc) aED73:b  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ho!qXS  
*/ TnuA uui*  
public void sort(int[] data) { EV;"]lC9  
quickSort(data,0,data.length-1); 52r\Q}v$  
} j ~I_by  
private void quickSort(int[] data,int i,int j){ C]3^:b+   
int pivotIndex=(i+j)/2; !VHw*fL|r  
file://swap ~b[5}_L=>  
SortUtil.swap(data,pivotIndex,j); hl8oE5MU  
>&T J  
int k=partition(data,i-1,j,data[j]); semTAoqH  
SortUtil.swap(data,k,j); %xC}#RDf  
if((k-i)>1) quickSort(data,i,k-1); \^lDd~MWG  
if((j-k)>1) quickSort(data,k+1,j); 8boiJku`  
>B.KI}dE  
} uY3?(f#  
/** nr&9\lG]G  
* @param data |WgFLF~k  
* @param i #6#%y~N  
* @param j ^ JU#_  
* @return G}nj 71=H  
*/ mw83pU6  
private int partition(int[] data, int l, int r,int pivot) { ~SwGZ  
do{ gj }Vnv1[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Io('kCOR;  
SortUtil.swap(data,l,r); unr`.}A2>  
} /5Yl, P  
while(l SortUtil.swap(data,l,r); 2TQ<XHA\  
return l; S4!B;,?AxN  
} ]hbrzv o  
&b]_#c   
}  o%$R`;  
p`'3Il3  
改进后的快速排序: SOS|3q_`  
r4]hcoU  
package org.rut.util.algorithm.support; ) LohB,?  
6dRvx;d  
import org.rut.util.algorithm.SortUtil; 1.nYT*  
R !>SN0  
/** !{A#\~,  
* @author treeroot Jn20^YG  
* @since 2006-2-2 :6Gf@Z&+  
* @version 1.0 iq5-eJmq  
*/ W Qe Q`pM  
public class ImprovedQuickSort implements SortUtil.Sort { [] R8VC>Ah  
6L-3cxqf\  
private static int MAX_STACK_SIZE=4096; {=+'3p  
private static int THRESHOLD=10; BD M"";u  
/* (non-Javadoc) Kw`}hSE>o  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~Vc`AcWP  
*/ Z_Y gV:jc  
public void sort(int[] data) { 2HDWlUTNVO  
int[] stack=new int[MAX_STACK_SIZE]; yz%o?%@  
mC'<Ov<eJ  
int top=-1; v/,,z+%-  
int pivot; "[CR5q9Pr  
int pivotIndex,l,r; Q776cj^L  
YOY2K%o  
stack[++top]=0; @680.+Kw  
stack[++top]=data.length-1; = @lM*  
Uf|@h  
while(top>0){ rW*[sLl3  
int j=stack[top--]; I8\R7s3  
int i=stack[top--]; ZD4:'m`T/  
sTxbh2  
pivotIndex=(i+j)/2; ,fhK  
pivot=data[pivotIndex]; RZ?abE8  
nMBF/75  
SortUtil.swap(data,pivotIndex,j); X//=OpS`  
yY"n:&T(  
file://partition 4^ZbT  
l=i-1; +_ $!9m  
r=j; i8=+ <d  
do{ <qBM+m$|)  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); xqv&^,ic  
SortUtil.swap(data,l,r); #eKH'fE  
} w[u>*I  
while(l SortUtil.swap(data,l,r); 5#dJga/88  
SortUtil.swap(data,l,j); )1!0'j99.  
_*wlK;`  
if((l-i)>THRESHOLD){ )J 8mn*  
stack[++top]=i; (b7',:_U7  
stack[++top]=l-1; iz27yXHZ~  
} xQNGlVipZ@  
if((j-l)>THRESHOLD){ p,3}A( >  
stack[++top]=l+1; 352RJC  
stack[++top]=j; Dp?lgw  
} M'@  
4!-/m7%eF  
} ah#jvp  
file://new InsertSort().sort(data); +*wo iSD  
insertSort(data); GFvLd:p` [  
} [*r=u[67F  
/** ,9$|"e&  
* @param data ?',GRaD  
*/ ^g"%:4zO  
private void insertSort(int[] data) { ZSLvr-,D  
int temp; zOYG`:/'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <ti,Wn.  
} 9r 5(  
} I.U=%{.  
} SgQ(#y|vV  
NH+N+4dEO  
} ##s :Ww  
,2mq}u>WU  
归并排序: m1RjD$fM  
=Nr?F '<  
package org.rut.util.algorithm.support; >oapw5~5  
<Kk?BRxi  
import org.rut.util.algorithm.SortUtil; Xc<Hm  
)k81  
/** OZ&SxR%q4  
* @author treeroot .lGN Fx  
* @since 2006-2-2 lr)9U 7  
* @version 1.0 cvjZ$Fcc%(  
*/ .qCI!%fg  
public class MergeSort implements SortUtil.Sort{ C-&s$5MzGb  
\cHF V  
/* (non-Javadoc) 5dL!e<<  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {`9J8qRY  
*/ N,&bBp  
public void sort(int[] data) { *`t3z-L  
int[] temp=new int[data.length]; )qRE['M  
mergeSort(data,temp,0,data.length-1); HE+D]7^  
} PVrNS7 Rk/  
q,=YKw)*  
private void mergeSort(int[] data,int[] temp,int l,int r){ /mK]O7O7  
int mid=(l+r)/2; A $l  
if(l==r) return ; MTn}]blH  
mergeSort(data,temp,l,mid); C-H6l6,  
mergeSort(data,temp,mid+1,r); eyos6Qi  
for(int i=l;i<=r;i++){ 72= 4#  
temp=data; %Ybr5$_  
} cea e~  
int i1=l; n]3Z~HoZ  
int i2=mid+1; :#=B wdC  
for(int cur=l;cur<=r;cur++){ m" ]VQnQ  
if(i1==mid+1) zRB LkrC  
data[cur]=temp[i2++]; a@! O}f*  
else if(i2>r) a#&\65D  
data[cur]=temp[i1++]; $v=(`=  
else if(temp[i1] data[cur]=temp[i1++]; }s.\B    
else Cjj(v7[E  
data[cur]=temp[i2++]; A%~t[ H  
} Li\b ,_C  
} jOL=vG  
lN_b&92  
} \\Nt^j3qR  
0RN7hpf&`  
改进后的归并排序: SU(J  
xN6}4JB  
package org.rut.util.algorithm.support; fbkAu  
f 2k~(@!h  
import org.rut.util.algorithm.SortUtil; DKG; up0  
;bFd*8?;  
/** ~l*[=0}  
* @author treeroot >P-'C^:V=  
* @since 2006-2-2 )ZpMB  
* @version 1.0 x)f<lZ^L&H  
*/ '~xiD?:  
public class ImprovedMergeSort implements SortUtil.Sort { Sy^@v%P'A  
Or-LQ^~  
private static final int THRESHOLD = 10; a,e;(/#\7  
n.1$p  
/* uIR   
* (non-Javadoc) _$KkSMA~_  
* ;.7]zn.X]2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w} r mYQ  
*/ J,k.*t:  
public void sort(int[] data) { x #t?`  
int[] temp=new int[data.length];  ;ih;8  
mergeSort(data,temp,0,data.length-1); }{.V^;  
} \# 1p  
`8;\}6:"1  
private void mergeSort(int[] data, int[] temp, int l, int r) { Kp6%=JjO  
int i, j, k; iGNZC{  
int mid = (l + r) / 2; 1:4u]$@E  
if (l == r) E/_n}$Z  
return; 8*eVP*g  
if ((mid - l) >= THRESHOLD) h2 >a_0"  
mergeSort(data, temp, l, mid); 35YDP|XZb  
else 3C2~heO>|  
insertSort(data, l, mid - l + 1); cd4HbSp  
if ((r - mid) > THRESHOLD) )~#3A@  
mergeSort(data, temp, mid + 1, r); 6`5DR~  
else DK#Tr: 7  
insertSort(data, mid + 1, r - mid); QV _a M2  
_w7yfZLv+  
for (i = l; i <= mid; i++) { h-\+# .YP  
temp = data; *?o 'sTH  
} %%lJyLq'Vk  
for (j = 1; j <= r - mid; j++) { EH]qYF.  
temp[r - j + 1] = data[j + mid]; TZarI-A  
} }jYVB|2  
int a = temp[l]; isz-MP$:K5  
int b = temp[r]; {-yw@Kq  
for (i = l, j = r, k = l; k <= r; k++) { YyC$\HH6  
if (a < b) { >FL%H=]  
data[k] = temp[i++]; ty8E;[ '  
a = temp; "4.A@XsY  
} else { ![m6$G{y  
data[k] = temp[j--]; ilQt`-O!  
b = temp[j]; //yz$d>JN  
} [2z >8 SL  
} 8aW<lu  
} >&Vz/0  
Y7 e1%,$v  
/** \sS0@gnDI  
* @param data D`)K3;h  
* @param l )yS8(F0  
* @param i ](z*t+">  
*/ OOzXA%<%c  
private void insertSort(int[] data, int start, int len) { BKu< p<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); O?iLLfs  
} Xkf|^-n  
} [vxHsY3z  
} ubl)$jZ:Q  
} _Pn 1n  
(ZQ?1Qxo  
堆排序: R HmT$^=  
&cy<"y  
package org.rut.util.algorithm.support; Dc0CQGx9b  
eU\_m5xl"  
import org.rut.util.algorithm.SortUtil; &PFK0tY  
_[N*k"  
/** fj[Kbo 7!h  
* @author treeroot M} Mgz  
* @since 2006-2-2 Zl?9ibm;@  
* @version 1.0 , jCE hb  
*/ kk}_AZ0eK  
public class HeapSort implements SortUtil.Sort{ U"L-1]L  
BxB B](  
/* (non-Javadoc) zEw~t&:e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Cw~fP[5XMF  
*/ t_\&LMD  
public void sort(int[] data) { Tj!rAMQk  
MaxHeap h=new MaxHeap(); A&X XL~yH  
h.init(data); 8*&YQId~  
for(int i=0;i h.remove(); ,Eo\(j2F.  
System.arraycopy(h.queue,1,data,0,data.length); (SByN7[g b  
} J#\oc@  
W4)bEWO+q  
private static class MaxHeap{ yn.[-  
cuL/y$+EY  
void init(int[] data){ u"DE?  
this.queue=new int[data.length+1]; CM)V^k*  
for(int i=0;i queue[++size]=data; <>V~  
fixUp(size); Ka$lNL3<j  
} s $ ?;C  
} [ZS.6{vr  
x::d}PP7  
private int size=0; ,?wxW  
$5>m\wrl  
private int[] queue; Nwk^r75lq  
\Npvm49  
public int get() { ow#8oUf=  
return queue[1]; ]N:Wt2  
} 0+AMN-  
N\Ab0mDOV.  
public void remove() { z</^qy  
SortUtil.swap(queue,1,size--); 0R}hAK+| 4  
fixDown(1); FhQb9\g  
} "_:6v64Gx  
file://fixdown yh.WTgcW  
private void fixDown(int k) { 'a>D+A:  
int j; aTs9lr:  
while ((j = k << 1) <= size) { )*aAkM  
if (j < size %26amp;%26amp; queue[j] j++; Bq tN=  
if (queue[k]>queue[j]) file://不用交换 p:3w8#)MZ  
break; wcGv#J],  
SortUtil.swap(queue,j,k); ^grDP*;W  
k = j; UkC'`NWF*  
} *T:jR  
} m",G;VN  
private void fixUp(int k) { N[N4!k )!$  
while (k > 1) { ."`||@|  
int j = k >> 1; 7t+H94KG7  
if (queue[j]>queue[k]) t;_1/ mt  
break; (*\y  
SortUtil.swap(queue,j,k); LdnTdh?  
k = j; @@=,bO  
} TW=N+ye^1(  
} {,= hIXo>  
-jVg {f!  
} $_gv(&ZT  
t<%+))b  
} !(y(6u#  
Bf" ZmG9  
SortUtil: SBY0L.  
L+0:'p=  
package org.rut.util.algorithm; 9 7pnq1b  
)))AxgM  
import org.rut.util.algorithm.support.BubbleSort; qos/pm$&i  
import org.rut.util.algorithm.support.HeapSort; ~w(A3I.  
import org.rut.util.algorithm.support.ImprovedMergeSort; W >|'4y)  
import org.rut.util.algorithm.support.ImprovedQuickSort; Sp]ov:]%f  
import org.rut.util.algorithm.support.InsertSort; Y@+9Ukd/  
import org.rut.util.algorithm.support.MergeSort; [YJ*zO  
import org.rut.util.algorithm.support.QuickSort; u\km_e  
import org.rut.util.algorithm.support.SelectionSort; U@:l~ xJ  
import org.rut.util.algorithm.support.ShellSort; [~?6jnp  
bG+Gg*0p  
/** ,2P /[ :  
* @author treeroot LN9.Q'@r?  
* @since 2006-2-2 m; PTO$--  
* @version 1.0 ^BP4l_rO9  
*/ 1+Vei<H$  
public class SortUtil { MPLeqk$;  
public final static int INSERT = 1; tZ:fOM  
public final static int BUBBLE = 2; ACF_;4%&  
public final static int SELECTION = 3; .:tR*Kst`7  
public final static int SHELL = 4; a&[>kO  
public final static int QUICK = 5; ]NKz5[9D  
public final static int IMPROVED_QUICK = 6; EW/NH&{  
public final static int MERGE = 7; 'lmjZ{k  
public final static int IMPROVED_MERGE = 8; l !ZzJ&  
public final static int HEAP = 9; muO;g&  
^tVIPH.R  
public static void sort(int[] data) { +y][s{A  
sort(data, IMPROVED_QUICK); S e(apQH  
} &+GbklUB~  
private static String[] name={ !ED,'d%J  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 5xa!L@)`wF  
}; S4OOm[8  
J$-1odL0Z  
private static Sort[] impl=new Sort[]{ Y>K8^GS  
new InsertSort(), nyOvB#f  
new BubbleSort(), !RN9wXS7  
new SelectionSort(), o@YEd d  
new ShellSort(), r$%,k*X^ k  
new QuickSort(), mOFp!(  
new ImprovedQuickSort(), 2t7=GA+j  
new MergeSort(), Ah zV?6e  
new ImprovedMergeSort(), f?"909&  
new HeapSort() fLV@~T|  
}; ][~rk?YY  
y/+y |.Xg  
public static String toString(int algorithm){ u Npa2{S'  
return name[algorithm-1]; F0'8n6zj  
} lT'V=,Y t  
f1U: _V^d  
public static void sort(int[] data, int algorithm) { =-G4 BQ  
impl[algorithm-1].sort(data); Sf t,$  
} ")w~pZE&+  
u2*."W\  
public static interface Sort { $C8s  
public void sort(int[] data); q2M%AvR  
} N]G`]  
.G|U#%"6x  
public static void swap(int[] data, int i, int j) { o^u}(wZ{  
int temp = data; E%$[*jZ  
data = data[j]; U)1hC^[!   
data[j] = temp; SnoEi~Da  
} ,;yaYF 6|/  
} t<cWMx5ra  
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